ensures that all new DML operations on the constrained
data comply with the constraint. This clause does not ensure that existing data in
the table complies with the constraint and therefore does not require a table lock.[@more@]
data comply with the constraint. This clause does not ensure that existing data in
the table complies with the constraint and therefore does not require a table lock.[@more@]
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/10599713/viewspace-1001507/ ，如需转载，请注明出处，否则将追究法律责任。
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