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  • Users: blackhead
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  1. blackhead

    Support MySQL data integrity?

    Hi Should you help me please? I have one problem with select query. I made three tables as shown below. I need to do something like nested select. But it is not supported. How should I maintain the gain from database build with respect to data integrity? A -------------------- id int (pk)...
  2. blackhead

    MySQL nested selects

    Hi Please help me with MySQL! I need to query something like this: SELECT * FROM a WHERE NOT id IN ( SELECT a FROM c WHERE b = {x} ) While: A -------------------- id int (pk) name char B ---------------------- id int (pk) name char C -------------------- id int (pk) a int ref a b int ref...

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