单选题在SQL语句的WHERE子句中,下列涉及空值的操作,不正确的是()AAGEISNULLBAGEISNOTNULLCAGE=NULLDNOT(AGEISNULL)
单选题
在SQL语句的WHERE子句中,下列涉及空值的操作,不正确的是()
A
AGEISNULL
B
AGEISNOTNULL
C
AGE=NULL
D
NOT(AGEISNULL)
参考解析
解析:
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