Support UUID type and functions in PostgreSQL

Fixes #876

Author: nene

src/languages/postgresql/postgresql.functions.ts

@@ -265,7 +265,7 @@ export const functions: string[] = [
   'WEBSEARCH_TO_TSQUERY',
 
   // https://www.postgresql.org/docs/14/functions-uuid.html
-  'UUID',
+  'GEN_RANDOM_UUID',
 
   // https://www.postgresql.org/docs/14/functions-xml.html
   'CURSOR_TO_XML',

src/languages/postgresql/postgresql.keywords.ts

@@ -148,6 +148,7 @@ export const dataTypes: string[] = [
   'TIME', // (cannot be function or type)
   'TIMESTAMP', // (cannot be function or type)
   'TIMESTAMPTZ', // (cannot be function or type)
+  'UUID',
   'VARCHAR', // (cannot be function or type)
   'XML',
   'ZONE',

test/postgresql.test.ts

@@ -230,4 +230,14 @@ describe('PostgreSqlFormatter', () => {
       dedent`CREATE OR REPLACE PROCEDURE foo () LANGUAGE sql AS $$ BEGIN END $$;`
     );
   });
+
+  // Issue #876
+  it('supports UUID type and functions', () => {
+    expect(
+      format(`CREATE TABLE foo (id uuid DEFAULT Gen_Random_Uuid());`, {
+        dataTypeCase: 'upper',
+        functionCase: 'lower',
+      })
+    ).toBe(dedent`CREATE TABLE foo (id UUID DEFAULT gen_random_uuid());`);
+  });
 });