(单选题)6: 在SQL语句中,与表达式"仓库号 NOT IN("wh1","wh2")"功能相同的表达式是( )。
A: 仓库号="wh1" AND 仓库号="wh2"
B: 仓库号!="wh1" OR 仓库号# "wh2"
C: 仓库号〈 〉"wh1" OR 仓库号!="wh2"
D: 仓库号!="wh1" AND 仓库号!="wh2"
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