70 lines
2.2 KiB
Plaintext
70 lines
2.2 KiB
Plaintext
--disable_query_log
|
|
set @@session.explicit_defaults_for_timestamp=off;
|
|
--enable_query_log
|
|
# owner: peihan.dph
|
|
# owner group: SQL3
|
|
# description:
|
|
# tags: dml
|
|
|
|
--disable_warnings
|
|
drop table if exists persons,orders, t1, t2, t3;
|
|
--enable_warnings
|
|
|
|
create table persons (id_p int primary key, lastname varchar(20), firstname varchar(20), address varchar(20), city varchar(20));
|
|
|
|
insert into persons values(1,'a','a1','a2', 'a3');
|
|
insert into persons values(2,'b','b1','b2', 'b3');
|
|
insert into persons values(3,'c','c1','c2', 'c3');
|
|
|
|
|
|
create table orders(id_o int primary key, orderno int, id_p int);
|
|
insert into orders values(1,1111,3);
|
|
insert into orders values(2,2222,3);
|
|
insert into orders values(3,3333,1);
|
|
insert into orders values(4,4444,1);
|
|
insert into orders values(5,5555,65);
|
|
|
|
select persons.lastname, persons.firstname, orders.orderno from persons left join orders on persons.id_p=orders.id_p order by persons.lastname, persons.firstname, orders.orderno;
|
|
--sorted_result
|
|
select persons.lastname, persons.firstname, orders.orderno from persons right join orders on persons.id_p=orders.id_p order by persons.lastname, persons.firstname, orders.orderno;
|
|
|
|
select persons.lastname, persons.firstname, orders.orderno
|
|
from persons
|
|
inner join orders
|
|
on persons.id_p=orders.id_p
|
|
order by persons.lastname, persons.firstname, orders.orderno;
|
|
|
|
select persons.lastname, persons.firstname, orders.orderno from persons full join orders on persons.id_p=orders.id_p order by persons.lastname, persons.firstname, orders.orderno;
|
|
|
|
create table t1(c1 date);
|
|
create table t2(c1 int primary key);
|
|
insert into t1 values('2078-10-10'), ('1970-11-01');
|
|
insert into t2 values(320);
|
|
select * from t1, t2 where t1.c1<=t2.c1;
|
|
|
|
drop table if exists t1;
|
|
create table t1(a bigint);
|
|
insert into t1 values (32);
|
|
|
|
drop table if exists t2;
|
|
create table t2(b year(4), key key_b (b));
|
|
insert into t2 values (1901);
|
|
|
|
create table t3(c year(4));
|
|
insert into t3 values (1901);
|
|
|
|
select a, b from t1, t2 where a > b;
|
|
select a, c from t1, t3 where a > c;
|
|
|
|
drop table if exists t1, t2;
|
|
create table t1(c1 bigint(92));
|
|
create table t2(c1 year(4) primary key);
|
|
insert into t1 values(32);
|
|
insert into t2 values(1901);
|
|
select * from t1;
|
|
select * from t2;
|
|
select * from t1, t2 where t1.c1>=t2.c1;
|
|
|
|
drop table orders,persons, t1, t2, t3;
|
|
|