关于mysql的多表连接问题
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责编:小采
时间:2020-11-09 16:43:21
关于mysql的多表连接问题
关于mysql的多表连接问题:mysql Select a.a_id,b.b_id from a,b where a.a_id = b.b_idSelect a.a_id,b.b_id from a inner join b on a.a_id = b.b_id这两个sq语句有区别吗
导读关于mysql的多表连接问题:mysql Select a.a_id,b.b_id from a,b where a.a_id = b.b_idSelect a.a_id,b.b_id from a inner join b on a.a_id = b.b_id这两个sq语句有区别吗

mysql
Select a.a_id,b.b_id from a,b where a.a_id = b.b_id
Select a.a_id,b.b_id from a inner join b on a.a_id = b.b_id
这两个sq语句有区别吗
关于mysql的多表连接问题
关于mysql的多表连接问题:mysql Select a.a_id,b.b_id from a,b where a.a_id = b.b_idSelect a.a_id,b.b_id from a inner join b on a.a_id = b.b_id这两个sq语句有区别吗