✨ add indicator shortName to catalogPath in variables table (#2845)

owid · Oct 27, 2023 · bb6300d · bb6300d
1 parent 7a1d2ad
commit bb6300d
Showing 1 changed file with 44 additions and 0 deletions.
diff --git a/db/migration/1698087308654-AddIndicatorShortNameToCatalogPath.ts b/db/migration/1698087308654-AddIndicatorShortNameToCatalogPath.ts
@@ -0,0 +1,44 @@
+import { MigrationInterface, QueryRunner } from "typeorm"
+
+export class AddIndicatorShortNameToCatalogPath1698087308654
+    implements MigrationInterface
+{
+    public async up(queryRunner: QueryRunner): Promise<void> {
+        await queryRunner.query(
+            `UPDATE variables
+            SET catalogPath = CONCAT(catalogPath, '#', shortName)
+            WHERE catalogPath not like '%#%';
+            `
+        )
+        // change it from text to varchar for more efficient indexing, make it as long as possible
+        // to fit into index
+        await queryRunner.query(
+            `ALTER TABLE variables
+            MODIFY catalogPath VARCHAR(767) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_as_cs;
+            `
+        )
+        await queryRunner.query(
+            `ALTER TABLE variables
+            ADD UNIQUE INDEX idx_catalogPath (catalogPath);
+            `
+        )
+    }
+
+    public async down(queryRunner: QueryRunner): Promise<void> {
+        await queryRunner.query(`
+            ALTER TABLE variables
+            DROP INDEX idx_catalogPath
+        `)
+        await queryRunner.query(
+            `UPDATE variables
+            SET catalogPath = SUBSTRING_INDEX(catalogPath, '#', 1)
+            WHERE catalogPath LIKE '%#%';
+            `
+        )
+        await queryRunner.query(
+            `ALTER TABLE variables
+            MODIFY catalogPath text CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_as_cs;
+            `
+        )
+    }
+}