🔨 Alter indexes for variables table (#4515)

* 🔨 Alter indexes for variables table
owid · Feb 3, 2025 · ff32ab8 · ff32ab8
1 parent 961f02e
commit ff32ab8
Showing 1 changed file with 43 additions and 0 deletions.
diff --git a/db/migration/1738574434234-AlterVariablesIndexes.ts b/db/migration/1738574434234-AlterVariablesIndexes.ts
@@ -0,0 +1,43 @@
+import { MigrationInterface, QueryRunner } from "typeorm"
+
+export class AlterVariablesIndexes1738574434234 implements MigrationInterface {
+    public async up(queryRunner: QueryRunner): Promise<void> {
+        // Drop the unique index on (shortName ,datasetId)
+        await queryRunner.query(`
+            ALTER TABLE variables
+            DROP INDEX unique_short_name_per_dataset;
+        `)
+
+        // Drop the unique index on (name, datasetId)
+        await queryRunner.query(`
+            ALTER TABLE variables
+            DROP INDEX variables_name_fk_dst_id_f7453c33_uniq;
+        `)
+
+        // Recreate a non-unique index on (name, datasetId)
+        await queryRunner.query(`
+            ALTER TABLE variables
+            ADD INDEX idx_name_dataset (name, datasetId);
+        `)
+    }
+
+    public async down(queryRunner: QueryRunner): Promise<void> {
+        // Drop the non-unique index on (name, datasetId)
+        await queryRunner.query(`
+            ALTER TABLE variables
+            DROP INDEX idx_name_dataset;
+        `)
+
+        // Recreate the unique index on (name, datasetId)
+        await queryRunner.query(`
+            ALTER TABLE variables
+            ADD UNIQUE INDEX variables_name_fk_dst_id_f7453c33_uniq (name, datasetId);
+        `)
+
+        // Recreate the unique index on (shortName, datasetId)
+        await queryRunner.query(`
+            ALTER TABLE variables
+            ADD UNIQUE INDEX unique_short_name_per_dataset (shortName, datasetId);
+        `)
+    }
+}