EVOLUTION-MANAGER

Edit File: bf_delete_trigger.test

# verify that delete triggers can not insert, delete, or update rows in the target table

source include/have_tokudb.inc;
set default_storage_engine='tokudb';
disable_warnings;
drop table if exists t;
enable_warnings;

create table t (id bigint not null primary key, x bigint not null);
insert into t values (1,0),(2,0),(3,0),(4,0);

# verify that a before delete trigger can not insert into the target table
create trigger t_delete before delete on t for each row insert into t values (1000000,0);
begin;
error 1442;
delete from t where x=0;
rollback;
drop trigger t_delete;

# verify that an after delete trigger can not insert into the target table
create trigger t_delete after delete on t for each row insert into t values (1000000,0);
begin;
error 1442;
delete from t where x=0;
rollback;
drop trigger t_delete;

# verify that a before delete trigger can not delete from the target table
create trigger t_delete before delete on t for each row delete from t where id=1000000;
begin;
error 1442;
delete from t where x=0;
rollback;
drop trigger t_delete;

# verify that an after delete trigger can not delete from the target table
create trigger t_delete after delete on t for each row delete from t where id=1000000;
begin;
error 1442;
delete from t where x=0;
rollback;
drop trigger t_delete;

# verify that a before delete trigger can not update the target table
create trigger t_delete before delete on t for each row update t set x=x+1 where id=1000000;
begin;
error 1442;
delete from t where x=0;
rollback;
drop trigger t_delete;

# verify that an after delete trigger can not update the target table
create trigger t_delete after delete on t for each row update t set x=x+1 where id=10000000;
begin;
error 1442;
delete from t where x=0;
rollback;
drop trigger t_delete;

# can execute select on the target table in a delete trigger.  it better use a different handler.
create table count (count bigint not null);
create trigger t_delete before delete on t for each row insert into count select count(*) from t;
begin;
delete from t where x=0;
select * from count;
rollback;
drop trigger t_delete;
drop table count;

drop table t;