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update OpenBills set peopleCount=(select rtNumber from Rooms where obId='ZD201005223') where obId='ZD201005223' 阅读全文
posted @ 2017-07-29 18:22
沉迷编程的程序员
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第一个查询的结果集 连接两个结果集的语句 第二个查询的结果集 连表的条件 阅读全文
posted @ 2017-07-29 13:01
沉迷编程的程序员
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if OBJECT_ID('tempdb..#temp') is not null drop table #temp select * into #temp from ( --select * from Activity select 7 as 'month',25 as 'day' union all select 7 as 'month',25 as 'day'... 阅读全文
posted @ 2017-07-29 10:01
沉迷编程的程序员
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