check clause造句

例句与造句

1. The CHECK clause is parsed but ignored by all storage engines ."
2. Does anyone know what the syntax is for a CHECK clause in SQL?
3. I found information about ranges ( e . g ., less than value " x " ), but I need a CHECK clause ( or any type of statement, really ) that limits an attribute to five choices.
4. It's difficult to find check clause in a sentence. 用check clause造句挺难的