MySQL 怎样通过相同字段，查询另一个表中的数据。

create table a (name varchar(20) not null,sex varchar(10))

create table b (name varchar(20) not null,sex varchar(10))

2、插入值

insert into a values('john','male')insert into b values('john','male')

insert into a values('kate','female')insert into b values('kate','female')

3、查询方法1

mysql>select name,sex from a where name in (select name from b where name='john')

+------+------+

| name | sex |

+------+------+

| john | male |

+------+------+

1 row in set (0.00 sec)

4、查询方法2

mysql>select a.name,a.sex from a,b where a.name=b.name and b.name='john'

+------+------+

| name | sex |

+------+------+

| john | male |

+------+------+

1 row in set (0.00 sec)

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DBLE官方项目：https://github.com/actiontech/dble

DBLE下载地址：https://github.com/actiontech/dble/releases