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工作学习 / 专业技术讨论 / 要给一个ORACLE表加一个CONSTRAINT,要求一个COLUMN不为空时, 另一个COLUMN也必须不为空. 请问该怎么写. 谢谢!
-e_dragon(e_dragon);
2005-10-26
(#2574066@0)
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up
-e_dragon(e_dragon);
2005-10-26
(#2574298@0)
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database trigger
-f001(感觉良好);
2005-10-26
(#2575263@0)
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Use CASE expression in the CHECK constraint for version 8i or up.
-sdy2005(cuttie);
2005-10-27
(#2575399@0)