SQL Expressions: Enable Auto-complete (#106511)

* First draft autocomplete

* Better naming

* Change suggestion to table/column population

* Remove all suggestions, just use table/column population but trigger on space

* Gate feature flag behind a feature flag

* Reorganize and add function list

* Add blurb about autocomplete to docs

* Update public/app/features/expressions/utils/metaSqlExpr.ts

Co-authored-by: Alex Spencer <52186778+alexjonspencer1@users.noreply.github.com>

* Add try catch, remove promise resolve

---------

Co-authored-by: Alex Spencer <52186778+alexjonspencer1@users.noreply.github.com>

pkg/services/featuremgmt/registry.go

@@ -803,6 +803,13 @@ var (
 			FrontendOnly: false,
 			Owner:        grafanaDatasourcesCoreServicesSquad,
 		},
+		{
+			Name:         "sqlExpressionsColumnAutoComplete",
+			Description:  "Enables column autocomplete for SQL Expressions",
+			Stage:        FeatureStageExperimental,
+			FrontendOnly: true,
+			Owner:        grafanaDataProSquad,
+		},
 		{
 			Name:         "groupToNestedTableTransformation",
 			Description:  "Enables the group to nested table transformation",

pkg/services/featuremgmt/toggles_gen.csv

@@ -105,6 +105,7 @@ scopeApi,experimental,@grafana/grafana-app-platform-squad,false,false,false
 promQLScope,GA,@grafana/oss-big-tent,false,false,false
 logQLScope,privatePreview,@grafana/observability-logs,false,false,false
 sqlExpressions,privatePreview,@grafana/grafana-datasources-core-services,false,false,false
+sqlExpressionsColumnAutoComplete,experimental,@grafana/datapro,false,false,true
 groupToNestedTableTransformation,GA,@grafana/dataviz-squad,false,false,true
 newPDFRendering,GA,@grafana/grafana-operator-experience-squad,false,false,false
 tlsMemcached,GA,@grafana/grafana-operator-experience-squad,false,false,false

pkg/services/featuremgmt/toggles_gen.go

@@ -431,6 +431,10 @@ const (
 	// Enables SQL Expressions, which can execute SQL queries against data source results.
 	FlagSqlExpressions = "sqlExpressions"
 
+	// FlagSqlExpressionsColumnAutoComplete
+	// Enables column autocomplete for SQL Expressions
+	FlagSqlExpressionsColumnAutoComplete = "sqlExpressionsColumnAutoComplete"
+
 	// FlagGroupToNestedTableTransformation
 	// Enables the group to nested table transformation
 	FlagGroupToNestedTableTransformation = "groupToNestedTableTransformation"

pkg/services/featuremgmt/toggles_gen.json

@@ -3111,6 +3111,19 @@
         "codeowner": "@grafana/grafana-datasources-core-services"
       }
     },
+    {
+      "metadata": {
+        "name": "sqlExpressionsColumnAutoComplete",
+        "resourceVersion": "1751471729972",
+        "creationTimestamp": "2025-07-02T15:55:29Z"
+      },
+      "spec": {
+        "description": "Enables column autocomplete for SQL Expressions",
+        "stage": "experimental",
+        "codeowner": "@grafana/datapro",
+        "frontend": true
+      }
+    },
     {
       "metadata": {
         "name": "sseGroupByDatasource",