sql 如果不存在，PostgreSQL重命名列

Posted 2021-05-13

DO $$
BEGIN
  IF NOT EXISTS(SELECT *
    FROM information_schema.columns
    WHERE table_name='my_table' and column_name='my_column')
  THEN
      ALTER TABLE "public"."my_table" RENAME COLUMN "my_column" TO "my_new_column";
  END IF;
END $$;