对于表A（col1 int,col2 char（1))更新col1=1的数据col2值为N，下面语句正确的是（）A．update table A set col2=’N’ where col1=1B．modify table A set col2=N where col1=1C．update A set col2=’N’ where col1=1D．modify A set col2=N where col1=1
对于表A（col1 int,col2 char（1))更新col1=1的数据col2值为N，下面语句正确的是（）
A．update table A set col2=’N’ where col1=1
B．modify table A set col2=N where col1=1
C．update A set col2=’N’ where col1=1
D．modify A set col2=N where col1=1
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