Properly detect PostgreSQL TEXT as data type

Fixes #726

Author: nene

src/languages/postgresql/postgresql.functions.ts

@@ -232,7 +232,7 @@ export const functions: string[] = [
   'NETMASK',
   'NETWORK',
   'SET_MASKLEN',
-  'TEXT',
+  // 'TEXT', // excluded because it's also a data type name
   'TRUNC',
 
   // https://www.postgresql.org/docs/14/functions-textsearch.html

test/postgresql.test.ts

@@ -345,4 +345,23 @@ describe('PostgreSqlFormatter', () => {
         id;
     `);
   });
+
+  // Issue #726
+  it('treats TEXT as data-type (not as plain keyword)', () => {
+    expect(
+      format(`CREATE TABLE foo (items text);`, {
+        dataTypeCase: 'upper',
+      })
+    ).toBe(dedent`
+      CREATE TABLE foo (items TEXT);
+    `);
+
+    expect(
+      format(`CREATE TABLE foo (text VARCHAR(100));`, {
+        keywordCase: 'upper',
+      })
+    ).toBe(dedent`
+      CREATE TABLE foo (text VARCHAR(100));
+    `);
+  });
 });