Support ALTER FUNCTION/PROCEDURE in Transact-SQL

Fixes #903

Author: nene

src/languages/transactsql/transactsql.formatter.ts

@@ -59,6 +59,8 @@ const tabularOnelineClauses = expandPhrases([
   'CREATE DATABASE',
   'ALTER DATABASE',
   'DROP DATABASE [IF EXISTS]',
+  // functions/procedures
+  'ALTER {FUNCTION | PROCEDURE | PROC}',
   // other statements
   'GO',
   'USE',
@@ -131,7 +133,6 @@ const tabularOnelineClauses = expandPhrases([
   'FULLTEXT CATALOG',
   'FULLTEXT INDEX',
   'FULLTEXT STOPLIST',
-  'FUNCTION',
   'GET CONVERSATION GROUP',
   'GET_TRANSMISSION_STATUS',
   'GRANT',
@@ -154,7 +155,6 @@ const tabularOnelineClauses = expandPhrases([
   'PARSEONLY',
   'PARTITION FUNCTION',
   'PARTITION SCHEME',
-  'PROCEDURE',
   'QUERY_GOVERNOR_COST_LIMIT',
   'QUEUE',
   'QUOTED_IDENTIFIER',

test/transactsql.test.ts

@@ -221,6 +221,18 @@ describe('TransactSqlFormatter', () => {
     `);
   });
 
+  // Issue #903
+  it('supports ALTER PROCEDURE', () => {
+    expect(format(`GO ALTER PROCEDURE foo AS SELECT 1; GO`)).toBe(dedent`
+      GO
+      ALTER PROCEDURE foo AS
+      SELECT
+        1;
+
+      GO
+    `);
+  });
+
   // Issue #819
   it('does not recognize ODBC keywords as reserved keywords', () => {
     expect(format(`SELECT Value, Zone`, { keywordCase: 'upper' })).toBe(dedent`