From 8551f488db8213e0dff86081dc8885acc718579d Mon Sep 17 00:00:00 2001
From: Kishore Simbili <kishore.simbili@repl.it>
Date: Wed, 15 Jul 2026 15:23:34 -0700
Subject: [PATCH 1/2] Make PostgreSQL foreign key drops idempotent

Emit DROP CONSTRAINT IF EXISTS for delete_reference statements so a prior cascading table drop cannot make the generated migration fail.
---
 drizzle-kit/src/sqlgenerator.ts     |  2 +-
 drizzle-kit/tests/pg-tables.test.ts | 22 ++++++++++++++++++++++
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/drizzle-kit/src/sqlgenerator.ts b/drizzle-kit/src/sqlgenerator.ts
index 3b88cde67a..c63981ad8a 100644
--- a/drizzle-kit/src/sqlgenerator.ts
+++ b/drizzle-kit/src/sqlgenerator.ts
@@ -3476,7 +3476,7 @@ class PgDeleteForeignKeyConvertor extends Convertor {
 			? `"${statement.schema}"."${tableFrom}"`
 			: `"${tableFrom}"`;
 
-		return `ALTER TABLE ${tableNameWithSchema} DROP CONSTRAINT "${name}";\n`;
+		return `ALTER TABLE ${tableNameWithSchema} DROP CONSTRAINT IF EXISTS "${name}";\n`;
 	}
 }
 
diff --git a/drizzle-kit/tests/pg-tables.test.ts b/drizzle-kit/tests/pg-tables.test.ts
index 4ca01f1fe7..a9c47eea62 100644
--- a/drizzle-kit/tests/pg-tables.test.ts
+++ b/drizzle-kit/tests/pg-tables.test.ts
@@ -753,6 +753,28 @@ test('alter composite primary key', async () => {
 	]);
 });
 
+test('drop foreign key constraint idempotently', async () => {
+	const users = pgTable('users', {
+		id: integer('id').primaryKey(),
+	});
+	const postsFrom = pgTable('posts', {
+		userId: integer('user_id').references(() => users.id),
+	});
+	const postsTo = pgTable('posts', {
+		userId: integer('user_id'),
+	});
+
+	const { sqlStatements } = await diffTestSchemas(
+		{ users, posts: postsFrom },
+		{ users, posts: postsTo },
+		[],
+	);
+
+	expect(sqlStatements).toStrictEqual([
+		'ALTER TABLE "posts" DROP CONSTRAINT IF EXISTS "posts_user_id_users_id_fk";\n',
+	]);
+});
+
 test('add index with op', async () => {
 	const from = {
 		users: pgTable('users', {

From 2fde9e50b7ee1261005717c6d599a324f29828d2 Mon Sep 17 00:00:00 2001
From: Kishore Simbili <kishore.simbili@repl.it>
Date: Wed, 15 Jul 2026 15:58:04 -0700
Subject: [PATCH 2/2] Prepare drizzle-kit 0.32.3 release

Bump the package version and document the idempotent PostgreSQL foreign-key drop fix.
---
 changelogs/drizzle-kit/0.32.3.md | 3 +++
 drizzle-kit/package.json         | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)
 create mode 100644 changelogs/drizzle-kit/0.32.3.md

diff --git a/changelogs/drizzle-kit/0.32.3.md b/changelogs/drizzle-kit/0.32.3.md
new file mode 100644
index 0000000000..d81a448616
--- /dev/null
+++ b/changelogs/drizzle-kit/0.32.3.md
@@ -0,0 +1,3 @@
+### PostgreSQL bug fix
+
+Foreign-key removals now use `DROP CONSTRAINT IF EXISTS`. This prevents generated migrations from failing when an earlier `DROP TABLE ... CASCADE` already removed the same constraint.
diff --git a/drizzle-kit/package.json b/drizzle-kit/package.json
index 9e24f04927..975d9926f4 100644
--- a/drizzle-kit/package.json
+++ b/drizzle-kit/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "@drizzle-team/drizzle-kit",
-	"version": "0.32.1",
+	"version": "0.32.3",
 	"homepage": "https://orm.drizzle.team",
 	"keywords": [
 		"drizzle",