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Where can I find detail information about constraint ?
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: Where can I find detail information about constraint ?
From
: 纪晓曦 <
sheepjxx@xxxxxxxxx
>
Date
: Wed, 23 Sep 2009 20:23:19 +1000
I want detail usage introduction about constraint,such as how to constrain a string to be exactly 4 character and start with 'z'.
Where can I find the reference of CHECK? detail usage.
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