77 lines
2.4 KiB
Plaintext
77 lines
2.4 KiB
Plaintext
drop table if exists persons,orders, t1, t2, t3;
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create table persons (id_p int primary key, lastname varchar(20), firstname varchar(20), address varchar(20), city varchar(20));
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insert into persons values(1,'a','a1','a2', 'a3');
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insert into persons values(2,'b','b1','b2', 'b3');
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insert into persons values(3,'c','c1','c2', 'c3');
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create table orders(id_o int primary key, orderno int, id_p int);
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insert into orders values(1,1111,3);
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insert into orders values(2,2222,3);
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insert into orders values(3,3333,1);
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insert into orders values(4,4444,1);
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insert into orders values(5,5555,65);
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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;
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lastname firstname orderno
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a a1 3333
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a a1 4444
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b b1 NULL
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c c1 1111
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c c1 2222
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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;
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lastname firstname orderno
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NULL NULL 5555
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a a1 3333
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a a1 4444
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c c1 1111
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c c1 2222
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select persons.lastname, persons.firstname, orders.orderno
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from persons
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inner join orders
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on persons.id_p=orders.id_p
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order by persons.lastname, persons.firstname, orders.orderno;
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lastname firstname orderno
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a a1 3333
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a a1 4444
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c c1 1111
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c c1 2222
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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;
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lastname firstname orderno
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NULL NULL 5555
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a a1 3333
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a a1 4444
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b b1 NULL
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c c1 1111
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c c1 2222
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create table t1(c1 date);
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create table t2(c1 int primary key);
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insert into t1 values('2078-10-10'), ('1970-11-01');
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insert into t2 values(320);
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select * from t1, t2 where t1.c1<=t2.c1;
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c1 c1
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1970-11-01 320
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drop table if exists t1;
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create table t1(a bigint);
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insert into t1 values (32);
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drop table if exists t2;
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create table t2(b year(4), key key_b (b));
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insert into t2 values (1901);
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create table t3(c year(4));
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insert into t3 values (1901);
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select a, b from t1, t2 where a > b;
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a b
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select a, c from t1, t3 where a > c;
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a c
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drop table if exists t1, t2;
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create table t1(c1 bigint(92));
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create table t2(c1 year(4) primary key);
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insert into t1 values(32);
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insert into t2 values(1901);
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select * from t1;
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c1
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32
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select * from t2;
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c1
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1901
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select * from t1, t2 where t1.c1>=t2.c1;
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c1 c1
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drop table orders,persons, t1, t2, t3;
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