1. 

   laogui Administrator

   Staff Member

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   问问

    

   #1 laogui, Aug 24, 2007
2. 

   notnull New Member

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   这是不存在的
   除非你设计不合理

    

   #2 notnull, Aug 24, 2007
3. 

   yeshou New Member

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   同意2楼

    

   #3 yeshou, Aug 24, 2007
4. 

   Kevin New Member

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   主要是看一次查询的数据多少吧？

    

   #4 Kevin, Aug 24, 2007
5. 

   notnull New Member

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   在适当的列建好索引

    

   #5 notnull, Aug 24, 2007
6. 

   wm_chief New Member

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   字段多当然会影响。

    

   #6 wm_chief, Aug 24, 2007

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