摘要:
转自:http://www.phpweblog.net/zwws/archive/2007/02/23/944.htmlleft join 命令详解 给个通俗的解释吧. 例表a aid adate 1 a1 2 a2 3 a3 表b bid bdate 1 b1 2 b2 4 b4 两个表a,b相连接,要取出id相同的字段 select * from a inner join b on a.aid... 阅读全文
摘要:
转自:http://www.phpweblog.net/zwws/archive/2007/02/23/944.htmlleft join 命令详解 给个通俗的解释吧. 例表a aid adate 1 a1 2 a2 3 a3 表b bid bdate 1 b1 2 b2 4 b4 两个表a,b相连接,要取出id相同的字段 select * from a inner join b on a.aid... 阅读全文
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