Merge branch 'bugfix/remove-unsupported-relational-tests' of https://…

…github.com/singlestore-labs/summer-hackathon-s2-drizzle-orm into bugfix/remove-unsupported-relational-tests

changelogs/drizzle-kit/0.25.0.md

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+## Breaking changes and migrate guide for Turso users
+
+If you are using Turso and libsql, you will need to upgrade your `drizzle.config` and `@libsql/client` package.
+
+1. This version of drizzle-orm will only work with `@libsql/[email protected]` or higher if you are using the `migrate` function. For other use cases, you can continue using previous versions(But the suggestion is to upgrade)
+To install the latest version, use the command:
+
+```bash
+npm i @libsql/client@latest
+```
+
+2. Previously, we had a common `drizzle.config` for SQLite and Turso users, which allowed a shared strategy for both dialects. Starting with this release, we are introducing the turso dialect in drizzle-kit. We will evolve and improve Turso as a separate dialect with its own migration strategies.
+
+**Before**
+
+```ts
+import { defineConfig } from "drizzle-kit";
+
+export default defineConfig({
+  dialect: "sqlite",
+  schema: "./schema.ts",
+  out: "./drizzle",
+  dbCredentials: {
+    url: "database.db",
+  },
+  breakpoints: true,
+  verbose: true,
+  strict: true,
+});
+```
+
+**After**
+
+```ts
+import { defineConfig } from "drizzle-kit";
+
+export default defineConfig({
+  dialect: "turso",
+  schema: "./schema.ts",
+  out: "./drizzle",
+  dbCredentials: {
+    url: "database.db",
+  },
+  breakpoints: true,
+  verbose: true,
+  strict: true,
+});
+```
+
+If you are using only SQLite, you can use `dialect: "sqlite"`
+
+## LibSQL/Turso and Sqlite migration updates
+
+### SQLite "generate" and "push" statements updates
+
+Starting from this release, we will no longer generate comments like this:
+
+```sql
+      '/*\n SQLite does not support "Changing existing column type" out of the box, we do not generate automatic migration for that, so it has to be done manually'
+      + '\n Please refer to: https://www.techonthenet.com/sqlite/tables/alter_table.php'
+      + '\n                  https://www.sqlite.org/lang_altertable.html'
+      + '\n                  https://stackoverflow.com/questions/2083543/modify-a-columns-type-in-sqlite3'
+      + "\n\n Due to that we don't generate migration automatically and it has to be done manually"
+      + '\n*/'
+```
+
+We will generate a set of statements, and you can decide if it's appropriate to create data-moving statements instead. Here is an example of the SQL file you'll receive now:
+
+```sql
+PRAGMA foreign_keys=OFF;
+--> statement-breakpoint
+CREATE TABLE `__new_worker` (
+  `id` integer PRIMARY KEY NOT NULL,
+  `name` text NOT NULL,
+  `salary` text NOT NULL,
+  `job_id` integer,
+  FOREIGN KEY (`job_id`) REFERENCES `job`(`id`) ON UPDATE no action ON DELETE no action
+);
+--> statement-breakpoint
+INSERT INTO `__new_worker`("id", "name", "salary", "job_id") SELECT "id", "name", "salary", "job_id" FROM `worker`;
+--> statement-breakpoint
+DROP TABLE `worker`;
+--> statement-breakpoint
+ALTER TABLE `__new_worker` RENAME TO `worker`;
+--> statement-breakpoint
+PRAGMA foreign_keys=ON;
+```
+
+### LibSQL/Turso "generate" and "push" statements updates
+
+Since LibSQL supports more ALTER statements than SQLite, we can generate more statements without recreating your schema and moving all the data, which can be potentially dangerous for production environments.
+
+LibSQL and Turso will now have a separate dialect in the Drizzle config file, meaning that we will evolve Turso and LibSQL independently from SQLite and will aim to support as many features as Turso/LibSQL offer.
+
+With the updated LibSQL migration strategy, you will have the ability to:
+
+- **Change Data Type**: Set a new data type for existing columns.
+- **Set and Drop Default Values**: Add or remove default values for existing columns.
+- **Set and Drop NOT NULL**: Add or remove the NOT NULL constraint on existing columns.
+- **Add References to Existing Columns**: Add foreign key references to existing columns
+
+You can find more information in the [LibSQL documentation](https://github.com/tursodatabase/libsql/blob/main/libsql-sqlite3/doc/libsql_extensions.md#altering-columns)
+
+### LIMITATIONS
+
+- Dropping or altering an index will cause table recreation.
+
+This is because LibSQL/Turso does not support dropping this type of index.
+
+```sql
+CREATE TABLE `users` (
+  `id` integer NOT NULL,
+  `name` integer,
+  `age` integer PRIMARY KEY NOT NULL
+  FOREIGN KEY (`name`) REFERENCES `users1`("id") ON UPDATE no action ON DELETE no action
+);
+```
+
+- If the table has indexes, altering columns will cause table recreation.
+- Drizzle-Kit will drop the indexes, modify the columns, and then recreate the indexes.
+- Adding or dropping composite foreign keys is not supported and will cause table recreation
+
+### NOTES
+
+- You can create a reference on any column type, but if you want to insert values, the referenced column must have a unique index or primary key.
+
+```sql
+CREATE TABLE parent(a PRIMARY KEY, b UNIQUE, c, d, e, f);
+CREATE UNIQUE INDEX i1 ON parent(c, d);
+CREATE INDEX i2 ON parent(e);
+CREATE UNIQUE INDEX i3 ON parent(f COLLATE nocase);
+
+CREATE TABLE child1(f, g REFERENCES parent(a));                        -- Ok
+CREATE TABLE child2(h, i REFERENCES parent(b));                        -- Ok
+CREATE TABLE child3(j, k, FOREIGN KEY(j, k) REFERENCES parent(c, d));  -- Ok
+CREATE TABLE child4(l, m REFERENCES parent(e));                        -- Error!
+CREATE TABLE child5(n, o REFERENCES parent(f));                        -- Error!
+CREATE TABLE child6(p, q, FOREIGN KEY(p, q) REFERENCES parent(b, c));  -- Error!
+CREATE TABLE child7(r REFERENCES parent(c));                           -- Error!
+```
+
+> **NOTE**: The foreign key for the table child5 is an error because, although the parent key column has a unique index, the index uses a different collating sequence.
+
+See more: https://www.sqlite.org/foreignkeys.html