Support ANTI and SEMI joins

Author: nene

src/languages/duckdb/duckdb.formatter.ts

@@ -74,6 +74,8 @@ const reservedJoins = expandPhrases([
   '{NATURAL | ASOF} [INNER] JOIN',
   '{NATURAL | ASOF} {LEFT | RIGHT | FULL} [OUTER] JOIN',
   'POSITIONAL JOIN',
+  'ANTI JOIN',
+  'SEMI JOIN',
 ]);
 
 const reservedPhrases = expandPhrases([

test/duckdb.test.ts

@@ -110,6 +110,8 @@ describe('DuckDBFormatter', () => {
       'ASOF FULL JOIN',
       'ASOF FULL OUTER JOIN',
       'POSITIONAL JOIN',
+      'SEMI JOIN',
+      'ANTI JOIN',
     ],
   });
   supportsSetOperations(format, [