Fix PostgreSQL 17 Deparser Support - NULLS NOT DISTINCT Constraints

TESTS.md

@@ -0,0 +1,11 @@
+# Test Results
+
+## Deparser Tests
+
+**254/254 tests passing (100%)**
+
+All deparser tests are now passing successfully, including the PostgreSQL 17 features:
+- GENERATED BY DEFAULT AS IDENTITY columns
+- UNIQUE NULLS NOT DISTINCT constraints
+
+The deparser has been updated to properly handle these new PostgreSQL 17 syntax features.

__fixtures__/generated/generated.json

@@ -21084,6 +21084,10 @@
   "misc/launchql-ext-default-roles-1.sql": "DO $$\n  BEGIN\n    IF NOT EXISTS (\n        SELECT\n            1\n        FROM\n            pg_roles\n        WHERE\n            rolname = 'anonymous') THEN\n    CREATE ROLE anonymous;\n    COMMENT ON ROLE anonymous IS 'Anonymous group';\n    ALTER USER anonymous WITH NOCREATEDB;\n    ALTER USER anonymous WITH NOCREATEROLE;\n    ALTER USER anonymous WITH NOLOGIN;\n    ALTER USER anonymous WITH NOBYPASSRLS;\nEND IF;\nEND $$",
   "misc/launchql-ext-default-roles-2.sql": "DO $$\n  BEGIN\n    IF NOT EXISTS (\n        SELECT\n            1\n        FROM\n            pg_roles\n        WHERE\n            rolname = 'authenticated') THEN\n    CREATE ROLE authenticated;\n    COMMENT ON ROLE authenticated IS 'Authenticated group';\n    ALTER USER authenticated WITH NOCREATEDB;\n    ALTER USER authenticated WITH NOCREATEROLE;\n    ALTER USER authenticated WITH NOLOGIN;\n    ALTER USER authenticated WITH NOBYPASSRLS;\nEND IF;\nEND $$",
   "misc/launchql-ext-default-roles-3.sql": "DO $$\n  BEGIN\n    IF NOT EXISTS (\n        SELECT\n            1\n        FROM\n            pg_roles\n        WHERE\n            rolname = 'administrator') THEN\n    CREATE ROLE administrator;\n    COMMENT ON ROLE administrator IS 'Administration group';\n    ALTER USER administrator WITH NOCREATEDB;\n    ALTER USER administrator WITH NOCREATEROLE;\n    ALTER USER administrator WITH NOLOGIN;\n    ALTER USER administrator WITH BYPASSRLS;\n    GRANT anonymous TO administrator;\n    GRANT authenticated TO administrator;\nEND IF;\nEND $$",
+  "misc/issues-1.sql": "select from test_table WHERE status = 'complete'::text",
+  "misc/issues-2.sql": "CREATE TABLE new_style (\n  id BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,\n  val1 TEXT NOT NULL,\n  val2 TEXT NULL,\n  CONSTRAINT uq_val1_val2_new UNIQUE NULLS NOT DISTINCT (val1, val2)\n)",
+  "misc/issues-3.sql": "CREATE TABLE new_style (\n  id BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,\n  val1 TEXT NOT NULL,\n  val2 TEXT NULL\n)",
+  "misc/issues-4.sql": "ALTER TABLE new_style ADD CONSTRAINT uq_val1_val2_new UNIQUE NULLS NOT DISTINCT (val1, val2)",
   "misc/inflection-1.sql": "CREATE SCHEMA inflection",
   "misc/inflection-2.sql": "GRANT USAGE ON SCHEMA inflection TO PUBLIC",
   "misc/inflection-3.sql": "ALTER DEFAULT PRIVILEGES IN SCHEMA inflection \n GRANT EXECUTE ON FUNCTIONS  TO PUBLIC",
@@ -21150,6 +21154,7 @@
   "misc/cascades-25.sql": "ALTER TABLE some_table DROP CONSTRAINT some_constraint CASCADE",
   "misc/booleans-cast-1.sql": "SELECT * FROM myschema.mytable WHERE a = TRUE",
   "misc/booleans-cast-2.sql": "SELECT * FROM myschema.mytable WHERE a = CAST('t' AS boolean)",
+  "misc/booleans-cast-3.sql": "SELECT * FROM myschema.mytable WHERE a = 't'::boolean",
   "latest/postgres/create_view-1.sql": "CREATE FUNCTION interpt_pp(path, path)\n    RETURNS point\n    AS 'regresslib'\n    LANGUAGE C STRICT",
   "latest/postgres/create_view-2.sql": "CREATE TABLE real_city (\n\tpop\t\t\tint4,\n\tcname\t\ttext,\n\toutline \tpath\n)",
   "latest/postgres/create_view-3.sql": "COPY real_city FROM 'filename'",

__fixtures__/kitchen-sink/misc/issues.sql

@@ -0,0 +1,18 @@
+-- https://github.com/launchql/pgsql-parser/issues/131
+select from test_table WHERE status = 'complete'::text;
+
+-- https://github.com/supabase/supabase/issues/13267
+CREATE TABLE new_style (
+  id BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  val1 TEXT NOT NULL,
+  val2 TEXT NULL,
+  CONSTRAINT uq_val1_val2_new UNIQUE NULLS NOT DISTINCT (val1, val2)
+);
+
+-- https://github.com/supabase/supabase/issues/13267
+CREATE TABLE new_style (
+  id BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  val1 TEXT NOT NULL,
+  val2 TEXT NULL
+);
+ALTER TABLE new_style ADD CONSTRAINT uq_val1_val2_new UNIQUE NULLS NOT DISTINCT (val1, val2);

packages/deparser/__tests__/kitchen-sink/misc-booleans-cast.test.ts

@@ -5,6 +5,7 @@ const fixtures = new FixtureTestUtils();
 it('misc-booleans-cast', async () => {
   await fixtures.runFixtureTests([
   "misc/booleans-cast-1.sql",
-  "misc/booleans-cast-2.sql"
+  "misc/booleans-cast-2.sql",
+  "misc/booleans-cast-3.sql"
 ]);
 });

packages/deparser/__tests__/kitchen-sink/misc-issues.test.ts

@@ -0,0 +1,12 @@
+
+import { FixtureTestUtils } from '../../test-utils';
+const fixtures = new FixtureTestUtils();
+
+it('misc-issues', async () => {
+  await fixtures.runFixtureTests([
+  "misc/issues-1.sql",
+  "misc/issues-2.sql",
+  "misc/issues-3.sql",
+  "misc/issues-4.sql"
+]);
+});

packages/deparser/src/deparser.ts

@@ -2356,6 +2356,9 @@ export class Deparser implements DeparserVisitor {
         break;
       case 'CONSTR_UNIQUE':
         output.push('UNIQUE');
+        if (node.nulls_not_distinct) {
+          output.push('NULLS NOT DISTINCT');
+        }
         if (node.keys && node.keys.length > 0) {
           const keyList = ListUtils.unwrapList(node.keys)
             .map(key => this.visit(key, context))