以下语句错误的是( ) A: alter table emp delete column addcolumn; B: alter table emp modify column addcolumn char(10); C: alter table emp change addcolumn addcolumn int; D: alter table emp add column addcolumn int;
以下语句错误的是( ) A: alter table emp delete column addcolumn; B: alter table emp modify column addcolumn char(10); C: alter table emp change addcolumn addcolumn int; D: alter table emp add column addcolumn int;
WhichclauseshouldbeincludedinaALTERTABLEstatementtoupdateatabledefinitionwithanew column? A: ADDCOLUMN B: ALTERCOLUMN C: APPENDCOLUMN D: RENAMECOLUMN
WhichclauseshouldbeincludedinaALTERTABLEstatementtoupdateatabledefinitionwithanew column? A: ADDCOLUMN B: ALTERCOLUMN C: APPENDCOLUMN D: RENAMECOLUMN
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