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How to delete from multiple tables in MySQL?

...h out to an EXISTS in 99% of the cases and then there is the 1% where this MySQL syntax takes the day. share | improve this answer | follow | ...
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MongoDB vs. Cassandra [closed]

...sandra: they are not using Cassandra for persisting tweets, they use still MySQL here (engineering.twitter.com/2010/07/cassandra-at-twitter-today.html). Ok, but I can imagine that they still store lots of data for other purposes in Cassandra. – H6. Jan 13 '12 a...
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Can you use an alias in the WHERE clause in mysql?

...will not work, in which case you'll need to use a HAVING clause. From the MySQL Manual: It is not allowable to refer to a column alias in a WHERE clause, because the column value might not yet be determined when the WHERE clause is executed. See Section B.1.5.4, “Problems with Colu...
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ROW_NUMBER() in MySQL

Is there a nice way in MySQL to replicate the SQL Server function ROW_NUMBER() ? 24 Answers ...
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ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网 - 专注IT技能提升

...tialize方法前,需要手动释放所有的全局或者静态变量。 如何手动释放呢: 设置指针指向NULL 调用Release方法,注意是要调用智能指针的Release方法,而不是内部指针的,指针指针的Release方法,会调用内部指针的Relase,然后设...
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ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网 - 专注IT技能提升

...tialize方法前,需要手动释放所有的全局或者静态变量。 如何手动释放呢: 设置指针指向NULL 调用Release方法,注意是要调用智能指针的Release方法,而不是内部指针的,指针指针的Release方法,会调用内部指针的Relase,然后设...
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ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网移动版 - 专注IT技能提升

...tialize方法前,需要手动释放所有的全局或者静态变量。 如何手动释放呢: 设置指针指向NULL 调用Release方法,注意是要调用智能指针的Release方法,而不是内部指针的,指针指针的Release方法,会调用内部指针的Relase,然后设...
https://www.tsingfun.com/it/cp... 

ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网移动版 - 专注IT技能提升

...tialize方法前,需要手动释放所有的全局或者静态变量。 如何手动释放呢: 设置指针指向NULL 调用Release方法,注意是要调用智能指针的Release方法,而不是内部指针的,指针指针的Release方法,会调用内部指针的Relase,然后设...
https://www.tsingfun.com/it/cp... 

ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网移动版 - 专注IT技能提升

...tialize方法前,需要手动释放所有的全局或者静态变量。 如何手动释放呢: 设置指针指向NULL 调用Release方法,注意是要调用智能指针的Release方法,而不是内部指针的,指针指针的Release方法,会调用内部指针的Relase,然后设...
https://www.tsingfun.com/it/cp... 

ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网移动版 - 专注IT技能提升

...tialize方法前,需要手动释放所有的全局或者静态变量。 如何手动释放呢: 设置指针指向NULL 调用Release方法,注意是要调用智能指针的Release方法,而不是内部指针的,指针指针的Release方法,会调用内部指针的Relase,然后设...