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DO $$
    BEGIN
        IF EXISTS(SELECT *
                  FROM information_schema.columns
                  WHERE table_name='field' and column_name='initial_value')
        THEN
            ALTER TABLE public.field DROP COLUMN IF EXISTS text_placeholder;
        ELSE
            IF EXISTS(SELECT *
                      FROM information_schema.columns
                      WHERE table_name='field' and column_name='text_placeholder')
            THEN
                ALTER TABLE public.field RENAME COLUMN text_placeholder TO initial_value;
            END IF;
        END IF;
    END $$;