下列正确的命令是() A: showtables; B: showcolumns; C: showcolumnsfromcustomers; D: showdatabases;
下列正确的命令是() A: showtables; B: showcolumns; C: showcolumnsfromcustomers; D: showdatabases;
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下列正确的命令是() A: showtables; B: showcolumns; C: showcolumnsfromcustomers; D: showdatabases;