• 2022-11-03
    查询订购单号(字符型,长度为4)尾字符是1的错误命令是()。
    A: SELECT*FROM订单WHERESUBSTR(订购单号,4)=,,1”        
    B: SELECT*FROM订单WHERESUBSTR(订购单号,4,1卜,,1”         
    C: SELECT*FROM订单WHERE”1”$订购单号         
    D: SELECT*FROM订单WHERERIGHT(订购单号,1)="1”
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