diff --git a/CHANGELOG.md b/CHANGELOG.md
index 27c026560e9..dedf4742677 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -26,6 +26,7 @@ To make use of filtering, configure `autocomplete_filtering_enabled`.
 * [FEATURE] Add support for `by()` and `coalesce()` to TraceQL. [#2490](https://github.com/grafana/tempo/pull/2490) 
 * [FEATURE] Add a GRPC streaming endpoint for traceql search [#2366](https://github.com/grafana/tempo/pull/2366) (@joe-elliott)
 * [FEATURE] Add new API to summarize span metrics from generators [#2481](https://github.com/grafana/tempo/pull/2481) (@zalegrala)
+* [FEATURE] Add `select()` to TraceQL [#2494](https://github.com/grafana/tempo/pull/2494) (@joe-elliott)
 * [ENHANCEMENT] Add `scope` parameter to `/api/search/tags` [#2282](https://github.com/grafana/tempo/pull/2282) (@joe-elliott)
   Create new endpoint `/api/v2/search/tags` that returns all tags organized by scope.
 * [ENHANCEMENT] Ability to toggle off latency or count metrics in metrics-generator [#2070](https://github.com/grafana/tempo/pull/2070) (@AlexDHoffer)
diff --git a/docs/sources/tempo/traceql/_index.md b/docs/sources/tempo/traceql/_index.md
index 19153fad98b..6ba1fedc149 100644
--- a/docs/sources/tempo/traceql/_index.md
+++ b/docs/sources/tempo/traceql/_index.md
@@ -237,6 +237,14 @@ to compare the ratios of two span attributes:
 ```
 or anything else that comes to mind.
 
+## Selection
+
+TraceQL can select arbitrary fields from spans. This is particularly performant b/c
+the selected fields are not retrieved until all other criteria is met.
+```
+{ status=error } | select(span.http.status_code, span.http.url)
+```
+
 ## Examples
 
 ### Find traces of a specific operation
diff --git a/pkg/traceql/ast.go b/pkg/traceql/ast.go
index 88a11e7050f..ac49bf3b545 100644
--- a/pkg/traceql/ast.go
+++ b/pkg/traceql/ast.go
@@ -129,6 +129,16 @@ func newCoalesceOperation() CoalesceOperation {
 func (o CoalesceOperation) extractConditions(request *FetchSpansRequest) {
 }
 
+type SelectOperation struct {
+	exprs []FieldExpression
+}
+
+func newSelectOperation(exprs []FieldExpression) SelectOperation {
+	return SelectOperation{
+		exprs: exprs,
+	}
+}
+
 // **********************
 // Scalars
 // **********************
diff --git a/pkg/traceql/ast_conditions.go b/pkg/traceql/ast_conditions.go
index 928fb7cb823..037db81c488 100644
--- a/pkg/traceql/ast_conditions.go
+++ b/pkg/traceql/ast_conditions.go
@@ -4,6 +4,16 @@ func (f SpansetFilter) extractConditions(request *FetchSpansRequest) {
 	f.Expression.extractConditions(request)
 }
 
+// extractConditions on Select puts its conditions into the SecondPassConditions
+func (o SelectOperation) extractConditions(request *FetchSpansRequest) {
+	selectR := &FetchSpansRequest{}
+	for _, expr := range o.exprs {
+		expr.extractConditions(selectR)
+	}
+	// copy any conditions to the normal request's SecondPassConditions
+	request.SecondPassConditions = append(request.SecondPassConditions, selectR.Conditions...)
+}
+
 func (o BinaryOperation) extractConditions(request *FetchSpansRequest) {
 	// TODO we can further optimise this by attempting to execute every FieldExpression, if they only contain statics it should resolve
 	switch o.LHS.(type) {
diff --git a/pkg/traceql/ast_conditions_test.go b/pkg/traceql/ast_conditions_test.go
index 1302d4829d1..557adf207ac 100644
--- a/pkg/traceql/ast_conditions_test.go
+++ b/pkg/traceql/ast_conditions_test.go
@@ -104,6 +104,7 @@ func TestSpansetFilter_extractConditions(t *testing.T) {
 			spansetFilter.extractConditions(req)
 
 			assert.Equal(t, tt.conditions, req.Conditions)
+			assert.Nil(t, req.SecondPassConditions)
 			assert.Equal(t, tt.allConditions, req.AllConditions, "FetchSpansRequest.AllConditions")
 		})
 	}
@@ -143,6 +144,52 @@ func TestScalarFilter_extractConditions(t *testing.T) {
 			expr.Pipeline.extractConditions(req)
 
 			assert.Equal(t, tt.conditions, req.Conditions)
+			assert.Nil(t, req.SecondPassConditions)
+			assert.Equal(t, tt.allConditions, req.AllConditions, "FetchSpansRequest.AllConditions")
+		})
+	}
+}
+
+func TestSelect_extractConditions(t *testing.T) {
+	tests := []struct {
+		query                string
+		conditions           []Condition
+		secondPassConditions []Condition
+		allConditions        bool
+	}{
+		{
+			query: `{ .foo = "a" } | select(resource.service.name)`,
+			conditions: []Condition{
+				newCondition(NewAttribute("foo"), OpEqual, NewStaticString("a")),
+			},
+			secondPassConditions: []Condition{
+				newCondition(NewScopedAttribute(AttributeScopeResource, false, "service.name"), OpNone),
+			},
+			allConditions: false,
+		},
+		{
+			query:      `{ } | select(.name,name)`,
+			conditions: []Condition{},
+			secondPassConditions: []Condition{
+				newCondition(NewAttribute("name"), OpNone),
+				newCondition(NewIntrinsic(IntrinsicName), OpNone),
+			},
+			allConditions: false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.query, func(t *testing.T) {
+			expr, err := Parse(tt.query)
+			require.NoError(t, err)
+
+			req := &FetchSpansRequest{
+				Conditions:    []Condition{},
+				AllConditions: true,
+			}
+			expr.Pipeline.extractConditions(req)
+
+			assert.Equal(t, tt.conditions, req.Conditions)
+			assert.Equal(t, tt.secondPassConditions, req.SecondPassConditions)
 			assert.Equal(t, tt.allConditions, req.AllConditions, "FetchSpansRequest.AllConditions")
 		})
 	}
diff --git a/pkg/traceql/ast_execute.go b/pkg/traceql/ast_execute.go
index b0eed97f071..578a8b08963 100644
--- a/pkg/traceql/ast_execute.go
+++ b/pkg/traceql/ast_execute.go
@@ -107,6 +107,11 @@ func (o SpansetOperation) evaluate(input []*Spanset) (output []*Spanset, err err
 	return output, nil
 }
 
+// SelectOperation evaluate is a no-op b/c the fetch layer has already decorated the spans with the requested attributes
+func (o SelectOperation) evaluate(input []*Spanset) (output []*Spanset, err error) {
+	return input, nil
+}
+
 func (f ScalarFilter) evaluate(input []*Spanset) (output []*Spanset, err error) {
 
 	// TODO we solve this gap where pipeline elements and scalar binary
diff --git a/pkg/traceql/ast_stringer.go b/pkg/traceql/ast_stringer.go
index 3fe87dc7071..b18c9be25ac 100644
--- a/pkg/traceql/ast_stringer.go
+++ b/pkg/traceql/ast_stringer.go
@@ -26,6 +26,14 @@ func (o CoalesceOperation) String() string {
 	return "coalesce()"
 }
 
+func (o SelectOperation) String() string {
+	s := make([]string, 0, len(o.exprs))
+	for _, e := range o.exprs {
+		s = append(s, e.String())
+	}
+	return "select(" + strings.Join(s, ", ") + ")"
+}
+
 func (o ScalarOperation) String() string {
 	return binaryOp(o.Op, o.LHS, o.RHS)
 }
diff --git a/pkg/traceql/ast_validate.go b/pkg/traceql/ast_validate.go
index 35947809f3d..c9d499bceaa 100644
--- a/pkg/traceql/ast_validate.go
+++ b/pkg/traceql/ast_validate.go
@@ -42,6 +42,16 @@ func (o CoalesceOperation) validate() error {
 	return nil
 }
 
+func (o SelectOperation) validate() error {
+	for _, e := range o.exprs {
+		if err := e.validate(); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
 func (o ScalarOperation) validate() error {
 	if err := o.LHS.validate(); err != nil {
 		return err
diff --git a/pkg/traceql/engine.go b/pkg/traceql/engine.go
index ed5cd999317..f386a09a108 100644
--- a/pkg/traceql/engine.go
+++ b/pkg/traceql/engine.go
@@ -70,7 +70,7 @@ func (e *Engine) ExecuteSearch(ctx context.Context, searchReq *tempopb.SearchReq
 
 	spansetsEvaluated := 0
 	// set up the expression evaluation as a filter to reduce data pulled
-	fetchSpansRequest.SecondPassConditions = metaConditions
+	fetchSpansRequest.SecondPassConditions = append(fetchSpansRequest.SecondPassConditions, metaConditions...)
 	fetchSpansRequest.SecondPass = func(inSS *Spanset) ([]*Spanset, error) {
 		if len(inSS.Spans) == 0 {
 			return nil, nil
diff --git a/pkg/traceql/expr.y b/pkg/traceql/expr.y
index c99683873e7..ae33cf9f3fc 100644
--- a/pkg/traceql/expr.y
+++ b/pkg/traceql/expr.y
@@ -12,6 +12,8 @@ import (
     root RootExpr
     groupOperation GroupOperation
     coalesceOperation CoalesceOperation
+    selectOperation SelectOperation
+    selectArgs []FieldExpression
 
     spansetExpression SpansetExpression
     spansetPipelineExpression SpansetExpression
@@ -43,6 +45,8 @@ import (
 %type <RootExpr> root
 %type <groupOperation> groupOperation
 %type <coalesceOperation> coalesceOperation
+%type <selectOperation> selectOperation
+%type <selectArgs> selectArgs
 
 %type <spansetExpression> spansetExpression
 %type <spansetPipelineExpression> spansetPipelineExpression
@@ -68,13 +72,13 @@ import (
 %token <staticInt>      INTEGER
 %token <staticFloat>    FLOAT
 %token <staticDuration> DURATION
-%token <val>            DOT OPEN_BRACE CLOSE_BRACE OPEN_PARENS CLOSE_PARENS
+%token <val>            DOT OPEN_BRACE CLOSE_BRACE OPEN_PARENS CLOSE_PARENS COMMA
                         NIL TRUE FALSE STATUS_ERROR STATUS_OK STATUS_UNSET
                         KIND_UNSPECIFIED KIND_INTERNAL KIND_SERVER KIND_CLIENT KIND_PRODUCER KIND_CONSUMER
                         IDURATION CHILDCOUNT NAME STATUS PARENT KIND
                         PARENT_DOT RESOURCE_DOT SPAN_DOT
                         COUNT AVG MAX MIN SUM
-                        BY COALESCE
+                        BY COALESCE SELECT
                         END_ATTRIBUTE
 
 // Operators are listed with increasing precedence.
@@ -116,10 +120,12 @@ spansetPipeline:
     spansetExpression                          { $$ = newPipeline($1) }
   | scalarFilter                               { $$ = newPipeline($1) }
   | groupOperation                             { $$ = newPipeline($1) }
+  | selectOperation                            { $$ = newPipeline($1) }
   | spansetPipeline PIPE spansetExpression     { $$ = $1.addItem($3)  }
   | spansetPipeline PIPE scalarFilter          { $$ = $1.addItem($3)  }
   | spansetPipeline PIPE groupOperation        { $$ = $1.addItem($3)  }
   | spansetPipeline PIPE coalesceOperation     { $$ = $1.addItem($3)  }
+  | spansetPipeline PIPE selectOperation       { $$ = $1.addItem($3)  }
   ;
 
 groupOperation:
@@ -130,6 +136,15 @@ coalesceOperation:
     COALESCE OPEN_PARENS CLOSE_PARENS           { $$ = newCoalesceOperation() }
   ;
 
+selectOperation:
+    SELECT OPEN_PARENS selectArgs CLOSE_PARENS { $$ = newSelectOperation($3) }
+  ;
+
+selectArgs:
+    fieldExpression                  { $$ = []FieldExpression{$1} }
+  | selectArgs COMMA fieldExpression { $$ = append($1, $3) }
+  ;
+
 spansetExpression: // shares the same operators as scalarPipelineExpression. split out for readability
     OPEN_PARENS spansetExpression CLOSE_PARENS   { $$ = $2 }
   | spansetExpression AND   spansetExpression    { $$ = newSpansetOperation(OpSpansetAnd, $1, $3) }
diff --git a/pkg/traceql/expr.y.go b/pkg/traceql/expr.y.go
index 33c1e763a2e..2d92118f7e5 100644
--- a/pkg/traceql/expr.y.go
+++ b/pkg/traceql/expr.y.go
@@ -17,6 +17,8 @@ type yySymType struct {
 	root              RootExpr
 	groupOperation    GroupOperation
 	coalesceOperation CoalesceOperation
+	selectOperation   SelectOperation
+	selectArgs        []FieldExpression
 
 	spansetExpression         SpansetExpression
 	spansetPipelineExpression SpansetExpression
@@ -55,55 +57,57 @@ const OPEN_BRACE = 57352
 const CLOSE_BRACE = 57353
 const OPEN_PARENS = 57354
 const CLOSE_PARENS = 57355
-const NIL = 57356
-const TRUE = 57357
-const FALSE = 57358
-const STATUS_ERROR = 57359
-const STATUS_OK = 57360
-const STATUS_UNSET = 57361
-const KIND_UNSPECIFIED = 57362
-const KIND_INTERNAL = 57363
-const KIND_SERVER = 57364
-const KIND_CLIENT = 57365
-const KIND_PRODUCER = 57366
-const KIND_CONSUMER = 57367
-const IDURATION = 57368
-const CHILDCOUNT = 57369
-const NAME = 57370
-const STATUS = 57371
-const PARENT = 57372
-const KIND = 57373
-const PARENT_DOT = 57374
-const RESOURCE_DOT = 57375
-const SPAN_DOT = 57376
-const COUNT = 57377
-const AVG = 57378
-const MAX = 57379
-const MIN = 57380
-const SUM = 57381
-const BY = 57382
-const COALESCE = 57383
-const END_ATTRIBUTE = 57384
-const PIPE = 57385
-const AND = 57386
-const OR = 57387
-const EQ = 57388
-const NEQ = 57389
-const LT = 57390
-const LTE = 57391
-const GT = 57392
-const GTE = 57393
-const NRE = 57394
-const RE = 57395
-const DESC = 57396
-const TILDE = 57397
-const ADD = 57398
-const SUB = 57399
-const NOT = 57400
-const MUL = 57401
-const DIV = 57402
-const MOD = 57403
-const POW = 57404
+const COMMA = 57356
+const NIL = 57357
+const TRUE = 57358
+const FALSE = 57359
+const STATUS_ERROR = 57360
+const STATUS_OK = 57361
+const STATUS_UNSET = 57362
+const KIND_UNSPECIFIED = 57363
+const KIND_INTERNAL = 57364
+const KIND_SERVER = 57365
+const KIND_CLIENT = 57366
+const KIND_PRODUCER = 57367
+const KIND_CONSUMER = 57368
+const IDURATION = 57369
+const CHILDCOUNT = 57370
+const NAME = 57371
+const STATUS = 57372
+const PARENT = 57373
+const KIND = 57374
+const PARENT_DOT = 57375
+const RESOURCE_DOT = 57376
+const SPAN_DOT = 57377
+const COUNT = 57378
+const AVG = 57379
+const MAX = 57380
+const MIN = 57381
+const SUM = 57382
+const BY = 57383
+const COALESCE = 57384
+const SELECT = 57385
+const END_ATTRIBUTE = 57386
+const PIPE = 57387
+const AND = 57388
+const OR = 57389
+const EQ = 57390
+const NEQ = 57391
+const LT = 57392
+const LTE = 57393
+const GT = 57394
+const GTE = 57395
+const NRE = 57396
+const RE = 57397
+const DESC = 57398
+const TILDE = 57399
+const ADD = 57400
+const SUB = 57401
+const NOT = 57402
+const MUL = 57403
+const DIV = 57404
+const MOD = 57405
+const POW = 57406
 
 var yyToknames = [...]string{
 	"$end",
@@ -119,6 +123,7 @@ var yyToknames = [...]string{
 	"CLOSE_BRACE",
 	"OPEN_PARENS",
 	"CLOSE_PARENS",
+	"COMMA",
 	"NIL",
 	"TRUE",
 	"FALSE",
@@ -147,6 +152,7 @@ var yyToknames = [...]string{
 	"SUM",
 	"BY",
 	"COALESCE",
+	"SELECT",
 	"END_ATTRIBUTE",
 	"PIPE",
 	"AND",
@@ -180,188 +186,199 @@ var yyExca = [...]int{
 	-1, 1,
 	1, -1,
 	-2, 0,
-	-1, 185,
-	13, 48,
-	-2, 56,
+	-1, 191,
+	13, 53,
+	-2, 61,
 }
 
 const yyPrivate = 57344
 
-const yyLast = 600
+const yyLast = 653
 
 var yyAct = [...]int{
 
-	12, 5, 183, 2, 65, 6, 7, 16, 163, 42,
-	39, 38, 150, 151, 62, 152, 153, 154, 163, 57,
-	58, 49, 59, 60, 61, 62, 33, 126, 106, 26,
-	34, 36, 107, 108, 118, 120, 121, 122, 123, 155,
-	156, 157, 158, 159, 160, 162, 161, 216, 218, 150,
-	151, 217, 152, 153, 154, 163, 209, 140, 142, 143,
-	144, 145, 146, 147, 152, 153, 154, 163, 148, 208,
-	130, 166, 167, 168, 72, 73, 74, 78, 94, 207,
-	64, 66, 206, 77, 75, 76, 80, 79, 81, 82,
-	83, 84, 85, 86, 87, 88, 89, 90, 91, 93,
-	92, 97, 95, 96, 15, 125, 119, 176, 177, 178,
-	179, 181, 180, 57, 58, 175, 59, 60, 61, 62,
-	129, 180, 59, 60, 61, 62, 67, 68, 106, 182,
-	133, 113, 107, 108, 185, 26, 187, 46, 47, 48,
-	49, 125, 181, 105, 17, 18, 19, 28, 15, 104,
-	110, 29, 31, 172, 69, 189, 190, 191, 192, 193,
-	194, 195, 196, 197, 198, 199, 200, 201, 202, 203,
-	204, 126, 103, 21, 24, 22, 23, 25, 13, 111,
-	102, 101, 173, 174, 63, 42, 39, 42, 39, 187,
-	72, 73, 74, 78, 94, 20, 211, 66, 132, 77,
-	75, 76, 80, 79, 81, 82, 83, 84, 85, 86,
-	87, 88, 89, 90, 91, 93, 92, 97, 95, 96,
-	215, 50, 51, 52, 53, 54, 55, 56, 98, 99,
-	100, 57, 58, 210, 59, 60, 61, 62, 43, 214,
-	171, 170, 67, 68, 44, 45, 169, 46, 47, 48,
-	49, 164, 165, 155, 156, 157, 158, 159, 160, 162,
-	161, 213, 71, 150, 151, 70, 152, 153, 154, 163,
-	164, 165, 155, 156, 157, 158, 159, 160, 162, 161,
-	212, 41, 150, 151, 14, 152, 153, 154, 163, 4,
-	11, 9, 164, 165, 155, 156, 157, 158, 159, 160,
-	162, 161, 205, 109, 150, 151, 1, 152, 153, 154,
-	163, 164, 165, 155, 156, 157, 158, 159, 160, 162,
-	161, 188, 0, 150, 151, 0, 152, 153, 154, 163,
-	0, 0, 0, 164, 165, 155, 156, 157, 158, 159,
-	160, 162, 161, 149, 0, 150, 151, 0, 152, 153,
-	154, 163, 164, 165, 155, 156, 157, 158, 159, 160,
-	162, 161, 130, 0, 150, 151, 0, 152, 153, 154,
-	163, 0, 0, 0, 0, 0, 164, 165, 155, 156,
-	157, 158, 159, 160, 162, 161, 0, 0, 150, 151,
-	0, 152, 153, 154, 163, 50, 51, 52, 53, 54,
-	55, 128, 0, 0, 0, 57, 58, 0, 59, 60,
-	61, 62, 50, 51, 52, 53, 54, 55, 0, 0,
-	0, 0, 44, 45, 0, 46, 47, 48, 49, 17,
-	18, 19, 0, 15, 0, 186, 17, 18, 19, 0,
-	15, 0, 184, 0, 44, 45, 0, 46, 47, 48,
-	49, 0, 0, 0, 0, 0, 0, 0, 21, 24,
-	22, 23, 25, 13, 0, 21, 24, 22, 23, 25,
-	13, 17, 18, 19, 0, 15, 0, 8, 37, 3,
-	20, 0, 17, 18, 19, 0, 15, 20, 110, 0,
-	0, 0, 0, 127, 0, 124, 0, 0, 0, 0,
-	21, 24, 22, 23, 25, 13, 112, 114, 115, 116,
-	117, 21, 24, 22, 23, 25, 0, 17, 18, 19,
-	0, 0, 20, 141, 32, 35, 27, 30, 40, 10,
-	33, 0, 28, 20, 34, 36, 29, 31, 0, 0,
-	0, 0, 0, 0, 0, 0, 21, 24, 22, 23,
-	25, 32, 35, 27, 30, 0, 0, 33, 0, 28,
-	0, 34, 36, 29, 31, 0, 0, 0, 20, 0,
-	0, 0, 131, 134, 135, 136, 137, 138, 139, 72,
-	73, 74, 78, 0, 0, 0, 133, 0, 77, 75,
-	76, 80, 79, 81, 82, 83, 84, 85, 86, 87,
+	68, 6, 8, 5, 7, 189, 2, 18, 169, 64,
+	223, 51, 130, 41, 28, 40, 156, 157, 227, 158,
+	159, 160, 169, 158, 159, 160, 169, 13, 134, 72,
+	110, 113, 109, 111, 226, 217, 129, 44, 122, 124,
+	125, 126, 127, 170, 171, 161, 162, 163, 164, 165,
+	166, 168, 167, 132, 216, 156, 157, 215, 158, 159,
+	160, 169, 61, 62, 63, 64, 152, 154, 28, 214,
+	172, 173, 174, 59, 60, 136, 61, 62, 63, 64,
+	48, 49, 50, 51, 195, 196, 144, 146, 147, 148,
+	149, 150, 151, 224, 181, 17, 129, 123, 46, 47,
+	178, 48, 49, 50, 51, 133, 182, 183, 184, 185,
+	161, 162, 163, 164, 165, 166, 168, 167, 186, 188,
+	156, 157, 137, 158, 159, 160, 169, 186, 130, 117,
+	179, 180, 110, 113, 109, 111, 108, 107, 191, 106,
+	219, 222, 187, 193, 59, 60, 105, 61, 62, 63,
+	64, 35, 104, 66, 65, 36, 38, 197, 198, 199,
+	200, 201, 202, 203, 204, 205, 206, 207, 208, 209,
+	210, 211, 212, 187, 170, 171, 161, 162, 163, 164,
+	165, 166, 168, 167, 218, 177, 156, 157, 176, 158,
+	159, 160, 169, 175, 41, 74, 41, 225, 193, 170,
+	171, 161, 162, 163, 164, 165, 166, 168, 167, 73,
+	43, 156, 157, 16, 158, 159, 160, 169, 44, 4,
+	44, 75, 76, 77, 81, 97, 12, 67, 69, 10,
+	153, 80, 78, 79, 83, 82, 84, 85, 86, 87,
+	88, 89, 90, 91, 92, 93, 94, 96, 95, 100,
+	98, 99, 46, 47, 58, 48, 49, 50, 51, 30,
+	101, 102, 103, 31, 33, 221, 45, 75, 76, 77,
+	81, 97, 112, 1, 69, 70, 71, 80, 78, 79,
+	83, 82, 84, 85, 86, 87, 88, 89, 90, 91,
+	92, 93, 94, 96, 95, 100, 98, 99, 170, 171,
+	161, 162, 163, 164, 165, 166, 168, 167, 220, 0,
+	156, 157, 0, 158, 159, 160, 169, 0, 34, 37,
+	0, 70, 71, 0, 35, 29, 32, 213, 36, 38,
+	0, 30, 0, 0, 0, 31, 33, 0, 0, 0,
+	0, 170, 171, 161, 162, 163, 164, 165, 166, 168,
+	167, 194, 0, 156, 157, 0, 158, 159, 160, 169,
+	170, 171, 161, 162, 163, 164, 165, 166, 168, 167,
+	155, 0, 156, 157, 0, 158, 159, 160, 169, 0,
+	0, 0, 0, 0, 170, 171, 161, 162, 163, 164,
+	165, 166, 168, 167, 134, 0, 156, 157, 0, 158,
+	159, 160, 169, 0, 0, 170, 171, 161, 162, 163,
+	164, 165, 166, 168, 167, 0, 0, 156, 157, 0,
+	158, 159, 160, 169, 0, 0, 0, 0, 0, 52,
+	53, 54, 55, 56, 57, 0, 0, 0, 0, 59,
+	60, 0, 61, 62, 63, 64, 52, 53, 54, 55,
+	56, 57, 0, 0, 0, 0, 59, 60, 0, 61,
+	62, 63, 64, 52, 53, 54, 55, 56, 57, 0,
+	0, 0, 0, 46, 47, 0, 48, 49, 50, 51,
+	19, 20, 21, 0, 17, 0, 114, 0, 19, 20,
+	21, 0, 17, 0, 192, 0, 0, 19, 20, 21,
+	0, 17, 0, 190, 0, 0, 0, 0, 0, 0,
+	23, 26, 24, 25, 27, 14, 115, 15, 23, 26,
+	24, 25, 27, 14, 0, 15, 0, 23, 26, 24,
+	25, 27, 14, 22, 15, 0, 19, 20, 21, 0,
+	17, 22, 9, 0, 0, 19, 20, 21, 0, 17,
+	22, 114, 19, 20, 21, 0, 0, 131, 145, 0,
+	128, 42, 11, 0, 0, 0, 23, 26, 24, 25,
+	27, 14, 0, 15, 0, 23, 26, 24, 25, 27,
+	0, 0, 23, 26, 24, 25, 27, 0, 0, 22,
+	34, 37, 0, 29, 32, 0, 35, 0, 22, 30,
+	36, 38, 0, 31, 33, 22, 0, 135, 138, 139,
+	140, 141, 142, 143, 75, 76, 77, 81, 39, 3,
+	0, 137, 0, 0, 80, 78, 79, 83, 82, 84,
+	85, 86, 87, 88, 89, 90, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 116, 118,
+	119, 120, 121,
 }
 var yyPact = [...]int{
 
-	465, -1000, -14, 509, -1000, 507, -1000, -1000, 465, -1000,
-	366, -1000, 175, 172, -1000, 69, -1000, -1000, -1000, -1000,
-	222, 169, 168, 160, 137, 131, 138, 119, 119, 119,
-	119, 119, 94, 94, 94, 94, 94, 482, 128, 480,
-	388, 107, 349, 574, 118, 118, 118, 118, 118, 118,
-	-1000, -1000, -1000, -1000, -1000, -1000, 511, 511, 511, 511,
-	511, 511, 511, 185, -1000, 332, 185, 185, 185, -1000,
+	530, -1000, -31, 279, -1000, 272, -1000, -1000, -1000, 530,
+	-1000, 415, -1000, 398, 142, 141, -1000, 216, -1000, -1000,
+	-1000, -1000, 254, 140, 134, 127, 125, 124, 474, 117,
+	117, 117, 117, 117, 85, 85, 85, 85, 85, 547,
+	83, 544, 40, 92, 381, 609, 110, 110, 110, 110,
+	110, 110, -1000, -1000, -1000, -1000, -1000, -1000, 546, 546,
+	546, 546, 546, 546, 546, 262, 262, -1000, 359, 262,
+	262, 262, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, -1000, 242, 237, 236, 149, -1000, -1000,
-	-1000, 102, 185, 185, 185, 185, 507, -1000, -1000, -1000,
-	476, 117, 97, 430, -1000, -1000, 97, -1000, -24, 94,
-	-1000, -1000, -24, -1000, -1000, -1000, 138, -1000, -1000, -1000,
-	-1000, 188, -1000, 423, 78, 78, -41, -41, -41, -41,
-	-37, 511, 63, 63, -48, -48, -48, -48, 308, -1000,
-	185, 185, 185, 185, 185, 185, 185, 185, 185, 185,
-	185, 185, 185, 185, 185, 185, 289, 5, 5, 40,
-	37, 27, 14, 229, 192, -1000, 267, 248, 226, 207,
-	480, 57, 34, 92, 430, -1000, 423, -16, -1000, 5,
-	5, -54, -54, -54, -44, -44, -44, -44, -44, -44,
-	-44, -44, -54, -7, -7, -1000, -1000, -1000, -1000, -1000,
-	9, 6, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, -1000, -1000, -1000, -1000, 189, 184, 181,
+	96, -1000, -1000, -1000, 81, 262, 262, 262, 262, 272,
+	-1000, -1000, -1000, -1000, 539, 107, 207, 491, -1000, -1000,
+	207, -1000, 99, 85, -1000, -1000, 99, -1000, -1000, -1000,
+	474, -1000, -1000, -1000, -1000, 194, -1000, 482, 19, 19,
+	-53, -53, -53, -53, 86, 546, 1, 1, -55, -55,
+	-55, -55, 338, 71, 153, -1000, 262, 262, 262, 262,
+	262, 262, 262, 262, 262, 262, 262, 262, 262, 262,
+	262, 262, 314, -38, -38, 25, 13, 10, -9, 180,
+	136, -1000, 295, 252, 128, -3, 544, 15, 80, 23,
+	491, -1000, 482, -33, -1000, -1000, 262, -38, -38, -56,
+	-56, -56, -42, -42, -42, -42, -42, -42, -42, -42,
+	-56, 62, 62, -1000, -1000, -1000, -1000, -1000, -10, -26,
+	-1000, -1000, -1000, -1000, -1000, 153, -1000, -1000,
 }
 var yyPgo = [...]int{
 
-	0, 306, 6, 303, 1, 478, 291, 2, 290, 5,
-	227, 289, 528, 0, 284, 281, 7, 4, 154, 265,
-	262,
+	0, 273, 4, 272, 2, 230, 3, 618, 229, 5,
+	226, 1, 254, 219, 561, 27, 213, 210, 7, 0,
+	29, 209, 195,
 }
 var yyR1 = [...]int{
 
-	0, 1, 1, 1, 5, 5, 5, 5, 5, 5,
-	5, 6, 7, 7, 7, 7, 7, 7, 7, 2,
-	3, 4, 4, 4, 4, 4, 4, 4, 8, 8,
-	9, 10, 10, 10, 10, 10, 10, 11, 11, 12,
-	12, 12, 12, 12, 12, 12, 12, 14, 15, 13,
-	13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
-	13, 13, 13, 16, 16, 16, 16, 16, 17, 17,
-	17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
-	17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
-	18, 18, 18, 18, 18, 18, 18, 18, 18, 18,
-	18, 18, 18, 18, 18, 18, 19, 19, 19, 19,
-	19, 19, 20, 20, 20, 20, 20, 20,
+	0, 1, 1, 1, 7, 7, 7, 7, 7, 7,
+	7, 8, 9, 9, 9, 9, 9, 9, 9, 9,
+	9, 2, 3, 4, 5, 5, 6, 6, 6, 6,
+	6, 6, 6, 10, 10, 11, 12, 12, 12, 12,
+	12, 12, 13, 13, 14, 14, 14, 14, 14, 14,
+	14, 14, 16, 17, 15, 15, 15, 15, 15, 15,
+	15, 15, 15, 15, 15, 15, 15, 15, 18, 18,
+	18, 18, 18, 19, 19, 19, 19, 19, 19, 19,
+	19, 19, 19, 19, 19, 19, 19, 19, 19, 19,
+	19, 19, 19, 19, 19, 20, 20, 20, 20, 20,
+	20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+	20, 21, 21, 21, 21, 21, 21, 22, 22, 22,
+	22, 22, 22,
 }
 var yyR2 = [...]int{
 
 	0, 1, 1, 1, 3, 3, 3, 3, 3, 3,
-	1, 3, 1, 1, 1, 3, 3, 3, 3, 4,
-	3, 3, 3, 3, 3, 3, 3, 1, 2, 3,
-	3, 1, 1, 1, 1, 1, 1, 3, 3, 3,
-	3, 3, 3, 3, 3, 3, 1, 3, 3, 3,
-	3, 3, 3, 3, 3, 3, 1, 1, 1, 1,
-	2, 2, 2, 3, 4, 4, 4, 4, 3, 3,
+	1, 3, 1, 1, 1, 1, 3, 3, 3, 3,
+	3, 4, 3, 4, 1, 3, 3, 3, 3, 3,
+	3, 3, 1, 2, 3, 3, 1, 1, 1, 1,
+	1, 1, 3, 3, 3, 3, 3, 3, 3, 3,
+	3, 1, 3, 3, 3, 3, 3, 3, 3, 3,
+	3, 1, 1, 1, 1, 2, 2, 2, 3, 4,
+	4, 4, 4, 3, 3, 3, 3, 3, 3, 3,
 	3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
-	3, 3, 3, 3, 3, 2, 2, 1, 1, 1,
-	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+	2, 2, 1, 1, 1, 1, 1, 1, 1, 1,
 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-	1, 1, 3, 3, 3, 3, 4, 4,
+	1, 1, 1, 1, 1, 1, 1, 3, 3, 3,
+	3, 4, 4,
 }
 var yyChk = [...]int{
 
-	-1000, -1, -7, -5, -11, -4, -9, -2, 12, -6,
-	-12, -8, -13, 40, -14, 10, -16, 6, 7, 8,
-	57, 35, 37, 38, 36, 39, 43, 44, 50, 54,
-	45, 55, 44, 50, 54, 45, 55, -5, -7, -4,
-	-12, -15, -13, -10, 56, 57, 59, 60, 61, 62,
-	46, 47, 48, 49, 50, 51, -10, 56, 57, 59,
-	60, 61, 62, 12, 11, -17, 12, 57, 58, -18,
-	-19, -20, 5, 6, 7, 15, 16, 14, 8, 18,
-	17, 19, 20, 21, 22, 23, 24, 25, 26, 27,
-	28, 29, 31, 30, 9, 33, 34, 32, 6, 7,
-	8, 12, 12, 12, 12, 12, -4, -9, -2, -3,
-	12, 41, -5, 12, -5, -5, -5, -5, -4, 12,
-	-4, -4, -4, -4, 13, 13, 43, 13, 13, 13,
-	13, -12, -18, 12, -12, -12, -12, -12, -12, -12,
-	-13, 12, -13, -13, -13, -13, -13, -13, -17, 11,
-	56, 57, 59, 60, 61, 46, 47, 48, 49, 50,
-	51, 53, 52, 62, 44, 45, -17, -17, -17, 4,
-	4, 4, 4, 33, 34, 13, -17, -17, -17, -17,
-	-4, -13, 12, -7, 12, -16, 12, -7, 13, -17,
-	-17, -17, -17, -17, -17, -17, -17, -17, -17, -17,
-	-17, -17, -17, -17, -17, 13, 42, 42, 42, 42,
-	4, 4, 13, 13, 13, 13, 13, 42, 42,
+	-1000, -1, -9, -7, -13, -6, -11, -2, -4, 12,
+	-8, -14, -10, -15, 41, 43, -16, 10, -18, 6,
+	7, 8, 59, 36, 38, 39, 37, 40, 45, 46,
+	52, 56, 47, 57, 46, 52, 56, 47, 57, -7,
+	-9, -6, -14, -17, -15, -12, 58, 59, 61, 62,
+	63, 64, 48, 49, 50, 51, 52, 53, -12, 58,
+	59, 61, 62, 63, 64, 12, 12, 11, -19, 12,
+	59, 60, -20, -21, -22, 5, 6, 7, 16, 17,
+	15, 8, 19, 18, 20, 21, 22, 23, 24, 25,
+	26, 27, 28, 29, 30, 32, 31, 9, 34, 35,
+	33, 6, 7, 8, 12, 12, 12, 12, 12, -6,
+	-11, -2, -3, -4, 12, 42, -7, 12, -7, -7,
+	-7, -7, -6, 12, -6, -6, -6, -6, 13, 13,
+	45, 13, 13, 13, 13, -14, -20, 12, -14, -14,
+	-14, -14, -14, -14, -15, 12, -15, -15, -15, -15,
+	-15, -15, -19, -5, -19, 11, 58, 59, 61, 62,
+	63, 48, 49, 50, 51, 52, 53, 55, 54, 64,
+	46, 47, -19, -19, -19, 4, 4, 4, 4, 34,
+	35, 13, -19, -19, -19, -19, -6, -15, 12, -9,
+	12, -18, 12, -9, 13, 13, 14, -19, -19, -19,
+	-19, -19, -19, -19, -19, -19, -19, -19, -19, -19,
+	-19, -19, -19, 13, 44, 44, 44, 44, 4, 4,
+	13, 13, 13, 13, 13, -19, 44, 44,
 }
 var yyDef = [...]int{
 
-	0, -2, 1, 2, 3, 12, 13, 14, 0, 10,
-	0, 27, 0, 0, 46, 0, 56, 57, 58, 59,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 12,
+	0, -2, 1, 2, 3, 12, 13, 14, 15, 0,
+	10, 0, 32, 0, 0, 0, 51, 0, 61, 62,
+	63, 64, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	31, 32, 33, 34, 35, 36, 0, 0, 0, 0,
-	0, 0, 0, 0, 28, 0, 0, 0, 0, 87,
-	88, 89, 90, 91, 92, 93, 94, 95, 96, 97,
-	98, 99, 100, 101, 102, 103, 104, 105, 106, 107,
-	108, 109, 110, 111, 0, 0, 0, 0, 60, 61,
-	62, 0, 0, 0, 0, 0, 15, 16, 17, 18,
-	0, 0, 5, 0, 6, 7, 8, 9, 22, 0,
-	23, 24, 25, 26, 4, 11, 0, 21, 39, 47,
-	49, 37, 38, 0, 40, 41, 42, 43, 44, 45,
-	30, 0, 50, 51, 52, 53, 54, 55, 0, 29,
+	0, 12, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 36, 37, 38, 39, 40, 41, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 33, 0, 0,
+	0, 0, 92, 93, 94, 95, 96, 97, 98, 99,
+	100, 101, 102, 103, 104, 105, 106, 107, 108, 109,
+	110, 111, 112, 113, 114, 115, 116, 0, 0, 0,
+	0, 65, 66, 67, 0, 0, 0, 0, 0, 16,
+	17, 18, 19, 20, 0, 0, 5, 0, 6, 7,
+	8, 9, 27, 0, 28, 29, 30, 31, 4, 11,
+	0, 26, 44, 52, 54, 42, 43, 0, 45, 46,
+	47, 48, 49, 50, 35, 0, 55, 56, 57, 58,
+	59, 60, 0, 0, 24, 34, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 85, 86, 0,
-	0, 0, 0, 0, 0, 63, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, -2, 0, 0, 19, 69,
-	70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
-	80, 81, 82, 83, 84, 68, 112, 113, 114, 115,
-	0, 0, 64, 65, 66, 67, 20, 116, 117,
+	0, 0, 0, 90, 91, 0, 0, 0, 0, 0,
+	0, 68, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, -2, 0, 0, 21, 23, 0, 74, 75, 76,
+	77, 78, 79, 80, 81, 82, 83, 84, 85, 86,
+	87, 88, 89, 73, 117, 118, 119, 120, 0, 0,
+	69, 70, 71, 72, 22, 25, 121, 122,
 }
 var yyTok1 = [...]int{
 
@@ -375,7 +392,7 @@ var yyTok2 = [...]int{
 	32, 33, 34, 35, 36, 37, 38, 39, 40, 41,
 	42, 43, 44, 45, 46, 47, 48, 49, 50, 51,
 	52, 53, 54, 55, 56, 57, 58, 59, 60, 61,
-	62,
+	62, 63, 64,
 }
 var yyTok3 = [...]int{
 	0,
@@ -720,703 +737,733 @@ yydefault:
 
 	case 1:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:94
+//line pkg/traceql/expr.y:98
 		{
 			yylex.(*lexer).expr = newRootExpr(yyDollar[1].spansetPipeline)
 		}
 	case 2:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:95
+//line pkg/traceql/expr.y:99
 		{
 			yylex.(*lexer).expr = newRootExpr(yyDollar[1].spansetPipelineExpression)
 		}
 	case 3:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:96
+//line pkg/traceql/expr.y:100
 		{
 			yylex.(*lexer).expr = newRootExpr(yyDollar[1].scalarPipelineExpressionFilter)
 		}
 	case 4:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:103
+//line pkg/traceql/expr.y:107
 		{
 			yyVAL.spansetPipelineExpression = yyDollar[2].spansetPipelineExpression
 		}
 	case 5:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:104
+//line pkg/traceql/expr.y:108
 		{
 			yyVAL.spansetPipelineExpression = newSpansetOperation(OpSpansetAnd, yyDollar[1].spansetPipelineExpression, yyDollar[3].spansetPipelineExpression)
 		}
 	case 6:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:105
+//line pkg/traceql/expr.y:109
 		{
 			yyVAL.spansetPipelineExpression = newSpansetOperation(OpSpansetChild, yyDollar[1].spansetPipelineExpression, yyDollar[3].spansetPipelineExpression)
 		}
 	case 7:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:106
+//line pkg/traceql/expr.y:110
 		{
 			yyVAL.spansetPipelineExpression = newSpansetOperation(OpSpansetDescendant, yyDollar[1].spansetPipelineExpression, yyDollar[3].spansetPipelineExpression)
 		}
 	case 8:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:107
+//line pkg/traceql/expr.y:111
 		{
 			yyVAL.spansetPipelineExpression = newSpansetOperation(OpSpansetUnion, yyDollar[1].spansetPipelineExpression, yyDollar[3].spansetPipelineExpression)
 		}
 	case 9:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:108
+//line pkg/traceql/expr.y:112
 		{
 			yyVAL.spansetPipelineExpression = newSpansetOperation(OpSpansetSibling, yyDollar[1].spansetPipelineExpression, yyDollar[3].spansetPipelineExpression)
 		}
 	case 10:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:109
+//line pkg/traceql/expr.y:113
 		{
 			yyVAL.spansetPipelineExpression = yyDollar[1].wrappedSpansetPipeline
 		}
 	case 11:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:113
+//line pkg/traceql/expr.y:117
 		{
 			yyVAL.wrappedSpansetPipeline = yyDollar[2].spansetPipeline
 		}
 	case 12:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:116
+//line pkg/traceql/expr.y:120
 		{
 			yyVAL.spansetPipeline = newPipeline(yyDollar[1].spansetExpression)
 		}
 	case 13:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:117
+//line pkg/traceql/expr.y:121
 		{
 			yyVAL.spansetPipeline = newPipeline(yyDollar[1].scalarFilter)
 		}
 	case 14:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:118
+//line pkg/traceql/expr.y:122
 		{
 			yyVAL.spansetPipeline = newPipeline(yyDollar[1].groupOperation)
 		}
 	case 15:
+		yyDollar = yyS[yypt-1 : yypt+1]
+//line pkg/traceql/expr.y:123
+		{
+			yyVAL.spansetPipeline = newPipeline(yyDollar[1].selectOperation)
+		}
+	case 16:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:119
+//line pkg/traceql/expr.y:124
 		{
 			yyVAL.spansetPipeline = yyDollar[1].spansetPipeline.addItem(yyDollar[3].spansetExpression)
 		}
-	case 16:
+	case 17:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:120
+//line pkg/traceql/expr.y:125
 		{
 			yyVAL.spansetPipeline = yyDollar[1].spansetPipeline.addItem(yyDollar[3].scalarFilter)
 		}
-	case 17:
+	case 18:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:121
+//line pkg/traceql/expr.y:126
 		{
 			yyVAL.spansetPipeline = yyDollar[1].spansetPipeline.addItem(yyDollar[3].groupOperation)
 		}
-	case 18:
+	case 19:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:122
+//line pkg/traceql/expr.y:127
 		{
 			yyVAL.spansetPipeline = yyDollar[1].spansetPipeline.addItem(yyDollar[3].coalesceOperation)
 		}
-	case 19:
+	case 20:
+		yyDollar = yyS[yypt-3 : yypt+1]
+//line pkg/traceql/expr.y:128
+		{
+			yyVAL.spansetPipeline = yyDollar[1].spansetPipeline.addItem(yyDollar[3].selectOperation)
+		}
+	case 21:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line pkg/traceql/expr.y:126
+//line pkg/traceql/expr.y:132
 		{
 			yyVAL.groupOperation = newGroupOperation(yyDollar[3].fieldExpression)
 		}
-	case 20:
+	case 22:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:130
+//line pkg/traceql/expr.y:136
 		{
 			yyVAL.coalesceOperation = newCoalesceOperation()
 		}
-	case 21:
+	case 23:
+		yyDollar = yyS[yypt-4 : yypt+1]
+//line pkg/traceql/expr.y:140
+		{
+			yyVAL.selectOperation = newSelectOperation(yyDollar[3].selectArgs)
+		}
+	case 24:
+		yyDollar = yyS[yypt-1 : yypt+1]
+//line pkg/traceql/expr.y:144
+		{
+			yyVAL.selectArgs = []FieldExpression{yyDollar[1].fieldExpression}
+		}
+	case 25:
+		yyDollar = yyS[yypt-3 : yypt+1]
+//line pkg/traceql/expr.y:145
+		{
+			yyVAL.selectArgs = append(yyDollar[1].selectArgs, yyDollar[3].fieldExpression)
+		}
+	case 26:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:134
+//line pkg/traceql/expr.y:149
 		{
 			yyVAL.spansetExpression = yyDollar[2].spansetExpression
 		}
-	case 22:
+	case 27:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:135
+//line pkg/traceql/expr.y:150
 		{
 			yyVAL.spansetExpression = newSpansetOperation(OpSpansetAnd, yyDollar[1].spansetExpression, yyDollar[3].spansetExpression)
 		}
-	case 23:
+	case 28:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:136
+//line pkg/traceql/expr.y:151
 		{
 			yyVAL.spansetExpression = newSpansetOperation(OpSpansetChild, yyDollar[1].spansetExpression, yyDollar[3].spansetExpression)
 		}
-	case 24:
+	case 29:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:137
+//line pkg/traceql/expr.y:152
 		{
 			yyVAL.spansetExpression = newSpansetOperation(OpSpansetDescendant, yyDollar[1].spansetExpression, yyDollar[3].spansetExpression)
 		}
-	case 25:
+	case 30:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:138
+//line pkg/traceql/expr.y:153
 		{
 			yyVAL.spansetExpression = newSpansetOperation(OpSpansetUnion, yyDollar[1].spansetExpression, yyDollar[3].spansetExpression)
 		}
-	case 26:
+	case 31:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:139
+//line pkg/traceql/expr.y:154
 		{
 			yyVAL.spansetExpression = newSpansetOperation(OpSpansetSibling, yyDollar[1].spansetExpression, yyDollar[3].spansetExpression)
 		}
-	case 27:
+	case 32:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:140
+//line pkg/traceql/expr.y:155
 		{
 			yyVAL.spansetExpression = yyDollar[1].spansetFilter
 		}
-	case 28:
+	case 33:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line pkg/traceql/expr.y:144
+//line pkg/traceql/expr.y:159
 		{
 			yyVAL.spansetFilter = newSpansetFilter(NewStaticBool(true))
 		}
-	case 29:
+	case 34:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:145
+//line pkg/traceql/expr.y:160
 		{
 			yyVAL.spansetFilter = newSpansetFilter(yyDollar[2].fieldExpression)
 		}
-	case 30:
+	case 35:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:149
+//line pkg/traceql/expr.y:164
 		{
 			yyVAL.scalarFilter = newScalarFilter(yyDollar[2].scalarFilterOperation, yyDollar[1].scalarExpression, yyDollar[3].scalarExpression)
 		}
-	case 31:
+	case 36:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:153
+//line pkg/traceql/expr.y:168
 		{
 			yyVAL.scalarFilterOperation = OpEqual
 		}
-	case 32:
+	case 37:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:154
+//line pkg/traceql/expr.y:169
 		{
 			yyVAL.scalarFilterOperation = OpNotEqual
 		}
-	case 33:
+	case 38:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:155
+//line pkg/traceql/expr.y:170
 		{
 			yyVAL.scalarFilterOperation = OpLess
 		}
-	case 34:
+	case 39:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:156
+//line pkg/traceql/expr.y:171
 		{
 			yyVAL.scalarFilterOperation = OpLessEqual
 		}
-	case 35:
+	case 40:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:157
+//line pkg/traceql/expr.y:172
 		{
 			yyVAL.scalarFilterOperation = OpGreater
 		}
-	case 36:
+	case 41:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:158
+//line pkg/traceql/expr.y:173
 		{
 			yyVAL.scalarFilterOperation = OpGreaterEqual
 		}
-	case 37:
+	case 42:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:165
+//line pkg/traceql/expr.y:180
 		{
 			yyVAL.scalarPipelineExpressionFilter = newScalarFilter(yyDollar[2].scalarFilterOperation, yyDollar[1].scalarPipelineExpression, yyDollar[3].scalarPipelineExpression)
 		}
-	case 38:
+	case 43:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:166
+//line pkg/traceql/expr.y:181
 		{
 			yyVAL.scalarPipelineExpressionFilter = newScalarFilter(yyDollar[2].scalarFilterOperation, yyDollar[1].scalarPipelineExpression, yyDollar[3].static)
 		}
-	case 39:
+	case 44:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:170
+//line pkg/traceql/expr.y:185
 		{
 			yyVAL.scalarPipelineExpression = yyDollar[2].scalarPipelineExpression
 		}
-	case 40:
+	case 45:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:171
+//line pkg/traceql/expr.y:186
 		{
 			yyVAL.scalarPipelineExpression = newScalarOperation(OpAdd, yyDollar[1].scalarPipelineExpression, yyDollar[3].scalarPipelineExpression)
 		}
-	case 41:
+	case 46:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:172
+//line pkg/traceql/expr.y:187
 		{
 			yyVAL.scalarPipelineExpression = newScalarOperation(OpSub, yyDollar[1].scalarPipelineExpression, yyDollar[3].scalarPipelineExpression)
 		}
-	case 42:
+	case 47:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:173
+//line pkg/traceql/expr.y:188
 		{
 			yyVAL.scalarPipelineExpression = newScalarOperation(OpMult, yyDollar[1].scalarPipelineExpression, yyDollar[3].scalarPipelineExpression)
 		}
-	case 43:
+	case 48:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:174
+//line pkg/traceql/expr.y:189
 		{
 			yyVAL.scalarPipelineExpression = newScalarOperation(OpDiv, yyDollar[1].scalarPipelineExpression, yyDollar[3].scalarPipelineExpression)
 		}
-	case 44:
+	case 49:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:175
+//line pkg/traceql/expr.y:190
 		{
 			yyVAL.scalarPipelineExpression = newScalarOperation(OpMod, yyDollar[1].scalarPipelineExpression, yyDollar[3].scalarPipelineExpression)
 		}
-	case 45:
+	case 50:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:176
+//line pkg/traceql/expr.y:191
 		{
 			yyVAL.scalarPipelineExpression = newScalarOperation(OpPower, yyDollar[1].scalarPipelineExpression, yyDollar[3].scalarPipelineExpression)
 		}
-	case 46:
+	case 51:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:177
+//line pkg/traceql/expr.y:192
 		{
 			yyVAL.scalarPipelineExpression = yyDollar[1].wrappedScalarPipeline
 		}
-	case 47:
+	case 52:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:181
+//line pkg/traceql/expr.y:196
 		{
 			yyVAL.wrappedScalarPipeline = yyDollar[2].scalarPipeline
 		}
-	case 48:
+	case 53:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:185
+//line pkg/traceql/expr.y:200
 		{
 			yyVAL.scalarPipeline = yyDollar[1].spansetPipeline.addItem(yyDollar[3].aggregate)
 		}
-	case 49:
+	case 54:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:189
+//line pkg/traceql/expr.y:204
 		{
 			yyVAL.scalarExpression = yyDollar[2].scalarExpression
 		}
-	case 50:
+	case 55:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:190
+//line pkg/traceql/expr.y:205
 		{
 			yyVAL.scalarExpression = newScalarOperation(OpAdd, yyDollar[1].scalarExpression, yyDollar[3].scalarExpression)
 		}
-	case 51:
+	case 56:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:191
+//line pkg/traceql/expr.y:206
 		{
 			yyVAL.scalarExpression = newScalarOperation(OpSub, yyDollar[1].scalarExpression, yyDollar[3].scalarExpression)
 		}
-	case 52:
+	case 57:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:192
+//line pkg/traceql/expr.y:207
 		{
 			yyVAL.scalarExpression = newScalarOperation(OpMult, yyDollar[1].scalarExpression, yyDollar[3].scalarExpression)
 		}
-	case 53:
+	case 58:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:193
+//line pkg/traceql/expr.y:208
 		{
 			yyVAL.scalarExpression = newScalarOperation(OpDiv, yyDollar[1].scalarExpression, yyDollar[3].scalarExpression)
 		}
-	case 54:
+	case 59:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:194
+//line pkg/traceql/expr.y:209
 		{
 			yyVAL.scalarExpression = newScalarOperation(OpMod, yyDollar[1].scalarExpression, yyDollar[3].scalarExpression)
 		}
-	case 55:
+	case 60:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:195
+//line pkg/traceql/expr.y:210
 		{
 			yyVAL.scalarExpression = newScalarOperation(OpPower, yyDollar[1].scalarExpression, yyDollar[3].scalarExpression)
 		}
-	case 56:
+	case 61:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:196
+//line pkg/traceql/expr.y:211
 		{
 			yyVAL.scalarExpression = yyDollar[1].aggregate
 		}
-	case 57:
+	case 62:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:197
+//line pkg/traceql/expr.y:212
 		{
 			yyVAL.scalarExpression = NewStaticInt(yyDollar[1].staticInt)
 		}
-	case 58:
+	case 63:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:198
+//line pkg/traceql/expr.y:213
 		{
 			yyVAL.scalarExpression = NewStaticFloat(yyDollar[1].staticFloat)
 		}
-	case 59:
+	case 64:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:199
+//line pkg/traceql/expr.y:214
 		{
 			yyVAL.scalarExpression = NewStaticDuration(yyDollar[1].staticDuration)
 		}
-	case 60:
+	case 65:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line pkg/traceql/expr.y:200
+//line pkg/traceql/expr.y:215
 		{
 			yyVAL.scalarExpression = NewStaticInt(-yyDollar[2].staticInt)
 		}
-	case 61:
+	case 66:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line pkg/traceql/expr.y:201
+//line pkg/traceql/expr.y:216
 		{
 			yyVAL.scalarExpression = NewStaticFloat(-yyDollar[2].staticFloat)
 		}
-	case 62:
+	case 67:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line pkg/traceql/expr.y:202
+//line pkg/traceql/expr.y:217
 		{
 			yyVAL.scalarExpression = NewStaticDuration(-yyDollar[2].staticDuration)
 		}
-	case 63:
+	case 68:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:206
+//line pkg/traceql/expr.y:221
 		{
 			yyVAL.aggregate = newAggregate(aggregateCount, nil)
 		}
-	case 64:
+	case 69:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line pkg/traceql/expr.y:207
+//line pkg/traceql/expr.y:222
 		{
 			yyVAL.aggregate = newAggregate(aggregateMax, yyDollar[3].fieldExpression)
 		}
-	case 65:
+	case 70:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line pkg/traceql/expr.y:208
+//line pkg/traceql/expr.y:223
 		{
 			yyVAL.aggregate = newAggregate(aggregateMin, yyDollar[3].fieldExpression)
 		}
-	case 66:
+	case 71:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line pkg/traceql/expr.y:209
+//line pkg/traceql/expr.y:224
 		{
 			yyVAL.aggregate = newAggregate(aggregateAvg, yyDollar[3].fieldExpression)
 		}
-	case 67:
+	case 72:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line pkg/traceql/expr.y:210
+//line pkg/traceql/expr.y:225
 		{
 			yyVAL.aggregate = newAggregate(aggregateSum, yyDollar[3].fieldExpression)
 		}
-	case 68:
+	case 73:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:217
+//line pkg/traceql/expr.y:232
 		{
 			yyVAL.fieldExpression = yyDollar[2].fieldExpression
 		}
-	case 69:
+	case 74:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:218
+//line pkg/traceql/expr.y:233
 		{
 			yyVAL.fieldExpression = newBinaryOperation(OpAdd, yyDollar[1].fieldExpression, yyDollar[3].fieldExpression)
 		}
-	case 70:
+	case 75:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:219
+//line pkg/traceql/expr.y:234
 		{
 			yyVAL.fieldExpression = newBinaryOperation(OpSub, yyDollar[1].fieldExpression, yyDollar[3].fieldExpression)
 		}
-	case 71:
+	case 76:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:220
+//line pkg/traceql/expr.y:235
 		{
 			yyVAL.fieldExpression = newBinaryOperation(OpMult, yyDollar[1].fieldExpression, yyDollar[3].fieldExpression)
 		}
-	case 72:
+	case 77:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:221
+//line pkg/traceql/expr.y:236
 		{
 			yyVAL.fieldExpression = newBinaryOperation(OpDiv, yyDollar[1].fieldExpression, yyDollar[3].fieldExpression)
 		}
-	case 73:
+	case 78:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:222
+//line pkg/traceql/expr.y:237
 		{
 			yyVAL.fieldExpression = newBinaryOperation(OpMod, yyDollar[1].fieldExpression, yyDollar[3].fieldExpression)
 		}
-	case 74:
+	case 79:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:223
+//line pkg/traceql/expr.y:238
 		{
 			yyVAL.fieldExpression = newBinaryOperation(OpEqual, yyDollar[1].fieldExpression, yyDollar[3].fieldExpression)
 		}
-	case 75:
+	case 80:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:224
+//line pkg/traceql/expr.y:239
 		{
 			yyVAL.fieldExpression = newBinaryOperation(OpNotEqual, yyDollar[1].fieldExpression, yyDollar[3].fieldExpression)
 		}
-	case 76:
+	case 81:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:225
+//line pkg/traceql/expr.y:240
 		{
 			yyVAL.fieldExpression = newBinaryOperation(OpLess, yyDollar[1].fieldExpression, yyDollar[3].fieldExpression)
 		}
-	case 77:
+	case 82:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:226
+//line pkg/traceql/expr.y:241
 		{
 			yyVAL.fieldExpression = newBinaryOperation(OpLessEqual, yyDollar[1].fieldExpression, yyDollar[3].fieldExpression)
 		}
-	case 78:
+	case 83:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:227
+//line pkg/traceql/expr.y:242
 		{
 			yyVAL.fieldExpression = newBinaryOperation(OpGreater, yyDollar[1].fieldExpression, yyDollar[3].fieldExpression)
 		}
-	case 79:
+	case 84:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:228
+//line pkg/traceql/expr.y:243
 		{
 			yyVAL.fieldExpression = newBinaryOperation(OpGreaterEqual, yyDollar[1].fieldExpression, yyDollar[3].fieldExpression)
 		}
-	case 80:
+	case 85:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:229
+//line pkg/traceql/expr.y:244
 		{
 			yyVAL.fieldExpression = newBinaryOperation(OpRegex, yyDollar[1].fieldExpression, yyDollar[3].fieldExpression)
 		}
-	case 81:
+	case 86:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:230
+//line pkg/traceql/expr.y:245
 		{
 			yyVAL.fieldExpression = newBinaryOperation(OpNotRegex, yyDollar[1].fieldExpression, yyDollar[3].fieldExpression)
 		}
-	case 82:
+	case 87:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:231
+//line pkg/traceql/expr.y:246
 		{
 			yyVAL.fieldExpression = newBinaryOperation(OpPower, yyDollar[1].fieldExpression, yyDollar[3].fieldExpression)
 		}
-	case 83:
+	case 88:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:232
+//line pkg/traceql/expr.y:247
 		{
 			yyVAL.fieldExpression = newBinaryOperation(OpAnd, yyDollar[1].fieldExpression, yyDollar[3].fieldExpression)
 		}
-	case 84:
+	case 89:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:233
+//line pkg/traceql/expr.y:248
 		{
 			yyVAL.fieldExpression = newBinaryOperation(OpOr, yyDollar[1].fieldExpression, yyDollar[3].fieldExpression)
 		}
-	case 85:
+	case 90:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line pkg/traceql/expr.y:234
+//line pkg/traceql/expr.y:249
 		{
 			yyVAL.fieldExpression = newUnaryOperation(OpSub, yyDollar[2].fieldExpression)
 		}
-	case 86:
+	case 91:
 		yyDollar = yyS[yypt-2 : yypt+1]
-//line pkg/traceql/expr.y:235
+//line pkg/traceql/expr.y:250
 		{
 			yyVAL.fieldExpression = newUnaryOperation(OpNot, yyDollar[2].fieldExpression)
 		}
-	case 87:
+	case 92:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:236
+//line pkg/traceql/expr.y:251
 		{
 			yyVAL.fieldExpression = yyDollar[1].static
 		}
-	case 88:
+	case 93:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:237
+//line pkg/traceql/expr.y:252
 		{
 			yyVAL.fieldExpression = yyDollar[1].intrinsicField
 		}
-	case 89:
+	case 94:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:238
+//line pkg/traceql/expr.y:253
 		{
 			yyVAL.fieldExpression = yyDollar[1].attributeField
 		}
-	case 90:
+	case 95:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:245
+//line pkg/traceql/expr.y:260
 		{
 			yyVAL.static = NewStaticString(yyDollar[1].staticStr)
 		}
-	case 91:
+	case 96:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:246
+//line pkg/traceql/expr.y:261
 		{
 			yyVAL.static = NewStaticInt(yyDollar[1].staticInt)
 		}
-	case 92:
+	case 97:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:247
+//line pkg/traceql/expr.y:262
 		{
 			yyVAL.static = NewStaticFloat(yyDollar[1].staticFloat)
 		}
-	case 93:
+	case 98:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:248
+//line pkg/traceql/expr.y:263
 		{
 			yyVAL.static = NewStaticBool(true)
 		}
-	case 94:
+	case 99:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:249
+//line pkg/traceql/expr.y:264
 		{
 			yyVAL.static = NewStaticBool(false)
 		}
-	case 95:
+	case 100:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:250
+//line pkg/traceql/expr.y:265
 		{
 			yyVAL.static = NewStaticNil()
 		}
-	case 96:
+	case 101:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:251
+//line pkg/traceql/expr.y:266
 		{
 			yyVAL.static = NewStaticDuration(yyDollar[1].staticDuration)
 		}
-	case 97:
+	case 102:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:252
+//line pkg/traceql/expr.y:267
 		{
 			yyVAL.static = NewStaticStatus(StatusOk)
 		}
-	case 98:
+	case 103:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:253
+//line pkg/traceql/expr.y:268
 		{
 			yyVAL.static = NewStaticStatus(StatusError)
 		}
-	case 99:
+	case 104:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:254
+//line pkg/traceql/expr.y:269
 		{
 			yyVAL.static = NewStaticStatus(StatusUnset)
 		}
-	case 100:
+	case 105:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:255
+//line pkg/traceql/expr.y:270
 		{
 			yyVAL.static = NewStaticKind(KindUnspecified)
 		}
-	case 101:
+	case 106:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:256
+//line pkg/traceql/expr.y:271
 		{
 			yyVAL.static = NewStaticKind(KindInternal)
 		}
-	case 102:
+	case 107:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:257
+//line pkg/traceql/expr.y:272
 		{
 			yyVAL.static = NewStaticKind(KindServer)
 		}
-	case 103:
+	case 108:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:258
+//line pkg/traceql/expr.y:273
 		{
 			yyVAL.static = NewStaticKind(KindClient)
 		}
-	case 104:
+	case 109:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:259
+//line pkg/traceql/expr.y:274
 		{
 			yyVAL.static = NewStaticKind(KindProducer)
 		}
-	case 105:
+	case 110:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:260
+//line pkg/traceql/expr.y:275
 		{
 			yyVAL.static = NewStaticKind(KindConsumer)
 		}
-	case 106:
+	case 111:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:264
+//line pkg/traceql/expr.y:279
 		{
 			yyVAL.intrinsicField = NewIntrinsic(IntrinsicDuration)
 		}
-	case 107:
+	case 112:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:265
+//line pkg/traceql/expr.y:280
 		{
 			yyVAL.intrinsicField = NewIntrinsic(IntrinsicChildCount)
 		}
-	case 108:
+	case 113:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:266
+//line pkg/traceql/expr.y:281
 		{
 			yyVAL.intrinsicField = NewIntrinsic(IntrinsicName)
 		}
-	case 109:
+	case 114:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:267
+//line pkg/traceql/expr.y:282
 		{
 			yyVAL.intrinsicField = NewIntrinsic(IntrinsicStatus)
 		}
-	case 110:
+	case 115:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:268
+//line pkg/traceql/expr.y:283
 		{
 			yyVAL.intrinsicField = NewIntrinsic(IntrinsicKind)
 		}
-	case 111:
+	case 116:
 		yyDollar = yyS[yypt-1 : yypt+1]
-//line pkg/traceql/expr.y:269
+//line pkg/traceql/expr.y:284
 		{
 			yyVAL.intrinsicField = NewIntrinsic(IntrinsicParent)
 		}
-	case 112:
+	case 117:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:273
+//line pkg/traceql/expr.y:288
 		{
 			yyVAL.attributeField = NewAttribute(yyDollar[2].staticStr)
 		}
-	case 113:
+	case 118:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:274
+//line pkg/traceql/expr.y:289
 		{
 			yyVAL.attributeField = NewScopedAttribute(AttributeScopeResource, false, yyDollar[2].staticStr)
 		}
-	case 114:
+	case 119:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:275
+//line pkg/traceql/expr.y:290
 		{
 			yyVAL.attributeField = NewScopedAttribute(AttributeScopeSpan, false, yyDollar[2].staticStr)
 		}
-	case 115:
+	case 120:
 		yyDollar = yyS[yypt-3 : yypt+1]
-//line pkg/traceql/expr.y:276
+//line pkg/traceql/expr.y:291
 		{
 			yyVAL.attributeField = NewScopedAttribute(AttributeScopeNone, true, yyDollar[2].staticStr)
 		}
-	case 116:
+	case 121:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line pkg/traceql/expr.y:277
+//line pkg/traceql/expr.y:292
 		{
 			yyVAL.attributeField = NewScopedAttribute(AttributeScopeResource, true, yyDollar[3].staticStr)
 		}
-	case 117:
+	case 122:
 		yyDollar = yyS[yypt-4 : yypt+1]
-//line pkg/traceql/expr.y:278
+//line pkg/traceql/expr.y:293
 		{
 			yyVAL.attributeField = NewScopedAttribute(AttributeScopeSpan, true, yyDollar[3].staticStr)
 		}
diff --git a/pkg/traceql/lexer.go b/pkg/traceql/lexer.go
index f56d82406b9..a539f47eaf2 100644
--- a/pkg/traceql/lexer.go
+++ b/pkg/traceql/lexer.go
@@ -11,6 +11,7 @@ import (
 )
 
 var tokens = map[string]int{
+	",":           COMMA,
 	".":           DOT,
 	"{":           OPEN_BRACE,
 	"}":           CLOSE_BRACE,
@@ -64,6 +65,7 @@ var tokens = map[string]int{
 	"sum":         SUM,
 	"by":          BY,
 	"coalesce":    COALESCE,
+	"select":      SELECT,
 }
 
 type lexer struct {
@@ -245,7 +247,7 @@ func isAttributeRune(r rune) bool {
 	}
 
 	switch r {
-	case scanner.EOF, '{', '}', '(', ')', '=', '~', '!', '<', '>', '&', '|', '^':
+	case scanner.EOF, '{', '}', '(', ')', '=', '~', '!', '<', '>', '&', '|', '^', ',':
 		return false
 	default:
 		return true
diff --git a/pkg/traceql/lexer_test.go b/pkg/traceql/lexer_test.go
index 3a4445b30f5..401fa1229bc 100644
--- a/pkg/traceql/lexer_test.go
+++ b/pkg/traceql/lexer_test.go
@@ -52,12 +52,13 @@ func TestLexerAttributes(t *testing.T) {
 		{`parent.resource.foo3`, []int{PARENT_DOT, RESOURCE_DOT, IDENTIFIER, END_ATTRIBUTE}},
 		{`parent.resource.foo+bar`, []int{PARENT_DOT, RESOURCE_DOT, IDENTIFIER, END_ATTRIBUTE}},
 		{`parent.resource.foo-bar`, []int{PARENT_DOT, RESOURCE_DOT, IDENTIFIER, END_ATTRIBUTE}},
-		// attribute enders: <space>, {, }, (, ) all force end an attribute
+		// attribute enders: <space>, {, }, (, ), <comma> all force end an attribute
 		{`.foo .bar`, []int{DOT, IDENTIFIER, END_ATTRIBUTE, DOT, IDENTIFIER, END_ATTRIBUTE}},
 		{`.foo}.bar`, []int{DOT, IDENTIFIER, END_ATTRIBUTE, CLOSE_BRACE, DOT, IDENTIFIER, END_ATTRIBUTE}},
 		{`.foo{.bar`, []int{DOT, IDENTIFIER, END_ATTRIBUTE, OPEN_BRACE, DOT, IDENTIFIER, END_ATTRIBUTE}},
 		{`.foo).bar`, []int{DOT, IDENTIFIER, END_ATTRIBUTE, CLOSE_PARENS, DOT, IDENTIFIER, END_ATTRIBUTE}},
 		{`.foo(.bar`, []int{DOT, IDENTIFIER, END_ATTRIBUTE, OPEN_PARENS, DOT, IDENTIFIER, END_ATTRIBUTE}},
+		{`.foo,.bar`, []int{DOT, IDENTIFIER, END_ATTRIBUTE, COMMA, DOT, IDENTIFIER, END_ATTRIBUTE}},
 		{`. foo`, []int{DOT, END_ATTRIBUTE, IDENTIFIER}},
 		// not attributes
 		{`.3`, []int{FLOAT}},
diff --git a/pkg/traceql/parse_test.go b/pkg/traceql/parse_test.go
index a7b33c7cb6f..7836f675e68 100644
--- a/pkg/traceql/parse_test.go
+++ b/pkg/traceql/parse_test.go
@@ -299,6 +299,42 @@ func TestGroupCoalesceOperation(t *testing.T) {
 	}
 }
 
+func TestSelectErrors(t *testing.T) {
+	tests := []struct {
+		in  string
+		err error
+	}{
+		{in: "select(.a) && { .b }", err: newParseError("syntax error: unexpected &&", 0, 12)},
+		{in: "select()", err: newParseError("syntax error: unexpected )", 1, 8)}}
+
+	for _, tc := range tests {
+		t.Run(tc.in, func(t *testing.T) {
+			_, err := Parse(tc.in)
+
+			require.Equal(t, tc.err, err)
+		})
+	}
+}
+
+func TestSelectOperation(t *testing.T) {
+	tests := []struct {
+		in       string
+		expected Pipeline
+	}{
+		{in: "select(.a)", expected: newPipeline(newSelectOperation([]FieldExpression{NewAttribute("a")}))},
+		{in: "select(.a,.b)", expected: newPipeline(newSelectOperation([]FieldExpression{NewAttribute("a"), NewAttribute("b")}))},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.in, func(t *testing.T) {
+			actual, err := Parse(tc.in)
+
+			require.NoError(t, err)
+			require.Equal(t, &RootExpr{tc.expected}, actual)
+		})
+	}
+}
+
 func TestSpansetExpressionErrors(t *testing.T) {
 	tests := []struct {
 		in  string
diff --git a/pkg/traceql/test_examples.yaml b/pkg/traceql/test_examples.yaml
index 58ccf139f35..1606a3be95c 100644
--- a/pkg/traceql/test_examples.yaml
+++ b/pkg/traceql/test_examples.yaml
@@ -75,6 +75,9 @@ valid:
   - '{ true } | max(1 + .a) = 1'
   - '{ true } | max((1 + .a) * 2) = 1'
   - 'max(duration) > 3s | { status = error || .http.status = 500 }'
+  # select
+  - 'select(.a)'
+  - '{} | select(.a,.b,.c)'
   # pipelines
   - '{ true } | { .a }'
   - '{ true } | count() = 1'
@@ -132,6 +135,9 @@ parse_fails:
   - 'avg(.field) + 1'             # scalar filters must resolve to boolean
   - 'sum(3) - 2'
   - 'min(childCount) && 2'
+  # select
+  - 'select(.a'
+  - 'select()'
   # pipelines
   - 'coalesce() | { true }'       # pipelines can't start with coalesce
   - 'count() > 3 && { true }'     # scalar filters have to be in pipeline
@@ -199,6 +205,8 @@ validate_fails:
   - 'min(1) = max(2) + 3'
   - 'min(1.1 - 3) > 1'
   - 'max(1h + 2h) > 1'
+  # select
+  - 'select(1 + "string")'
   # by - will *not* be valid when supported - group expressions must reference the span
   - '{ true } | by(1)'
   - '{ true } | by("foo")'