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# Test Routine for JOIN operations in BlitzDB
--disable_warnings
drop table if exists t1, t2;
--enable_warnings
# Simple JOIN syntax - Unindexed
create table t1 (a int) engine = blitzdb;
create table t2 (a int) engine = blitzdb;
insert into t1 values (1), (2), (3);
insert into t2 values (1), (4), (8);
select * from t1 JOIN t2 where t1.a = t2.a;
select * from t1 LEFT JOIN t2 on t1.a = t2.a;
select * from t1 RIGHT JOIN t2 on t1.a = t2.a;
select * from t1 UNION select * from t2;
drop table t1, t2;
# Simple Expensive Multi Table JOIN - Unindexed
create table t1 (id int, name varchar(32)) engine = blitzdb;
create table t2 (id int, job_id int) engine = blitzdb;
create table t3 (job_id int, job_name varchar(32)) engine = blitzdb;
insert into t1 values (1, 'Alex');
insert into t1 values (2, 'Bob');
insert into t1 values (3, 'Curt');
insert into t1 values (4, 'Dan');
insert into t1 values (5, 'Edgar');
insert into t2 values (1, 1);
insert into t2 values (2, 1);
insert into t2 values (3, 3);
insert into t2 values (4, 2);
insert into t2 values (5, 4);
insert into t3 values (1, 'Software Engineer');
insert into t3 values (2, 'Civil Engineer');
insert into t3 values (3, 'Electrical Engineer');
insert into t3 values (4, 'Mechanical Engineer');
select
t1.name, t3.job_name
from
t1 join (t2, t3)
on
(t1.id = t2.id and t2.job_id = t3.job_id);
# right join
select
t1.name, t3.job_name
from
t1 right join (t2, t3)
on
(t1.id = t2.id and t2.job_id = t3.job_id);
# remove a job
delete from t3 where job_id = 4;
select
t1.name, t3.job_name
from
t1 join (t2, t3)
on
(t1.id = t2.id and t2.job_id = t3.job_id);
# left join
select
t1.name, t3.job_name
from
t1 left join (t2, t3)
on
(t1.id = t2.id and t2.job_id = t3.job_id);
drop table t1, t2, t3;
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