Flyway 5.0.7 warning about using schema_version table

Question

We use the Flyway Gradle plugin to do our migrations offline (i.e. we migrate while the system is down). We recently upgraded to Flyway 5.0.7 and we see this warning now fo

Answer 1

On PostgreSQL I have solved it with just one migration on top:

DO $$
  BEGIN
    IF (EXISTS (SELECT 1 FROM information_schema.tables WHERE table_schema = 'public' AND table_name = 'schema_version')
        AND EXISTS (SELECT 1 FROM information_schema.tables WHERE table_schema = 'public' AND table_name = 'flyway_schema_history'))
    THEN
        DROP TABLE schema_version;
    END IF ;
    IF (EXISTS (SELECT 1 FROM information_schema.tables WHERE table_schema = 'public' AND table_name = 'schema_version')
        AND NOT EXISTS (SELECT 1 FROM information_schema.tables WHERE table_schema = 'public' AND table_name = 'flyway_schema_history'))
    THEN
        CREATE TABLE flyway_schema_history AS TABLE schema_version;
    END IF ;
  END
$$ ;

It works actually in 2 stages:

• On first reboot it copies history with migration recorded into 'old' history table.
• On second reboot it drops old history table. Now migration goes into 'new' history and everything is finished.