Treat $ACTION as keyword in Transact-SQL

Fixes #810
sql-formatter-org · Dec 21, 2024 · 1359634 · 1359634
1 parent 0d39810
commit 1359634
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diff --git a/src/languages/transactsql/transactsql.keywords.ts b/src/languages/transactsql/transactsql.keywords.ts
@@ -289,6 +289,8 @@ export const keywords: string[] = [
   'WRITE',
   'YEAR',
   'ZONE',
+  // https://learn.microsoft.com/en-us/sql/t-sql/queries/output-clause-transact-sql?view=sql-server-ver16#action
+  '$ACTION',
 ];
 
 export const dataTypes: string[] = [

diff --git a/test/transactsql.test.ts b/test/transactsql.test.ts
@@ -197,4 +197,12 @@ describe('TransactSqlFormatter', () => {
       CREATE TABLE foo (name char(65));
     `);
   });
+
+  // Issue #810
+  it('supports special $ACTION keyword', () => {
+    expect(format(`MERGE INTO tbl OUTPUT $action AS act;`)).toBe(dedent`
+      MERGE INTO
+        tbl OUTPUT $action AS act;
+    `);
+  });
 });