WhichclauseshouldbeincludedinaALTERTABLEstatementtoupdateatabledefinitionwithanew column?
A: ADDCOLUMN
B: ALTERCOLUMN
C: APPENDCOLUMN
D: RENAMECOLUMN
A: ADDCOLUMN
B: ALTERCOLUMN
C: APPENDCOLUMN
D: RENAMECOLUMN
举一反三
- 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;
- A column that fails due to normal stress, is called ( ) A: short column B: long column C: weak column D: medium column
- Which one of the followings columns has the highest column efficiency? A: packed column B: WCOT column C: SCOT column D: PLOT column
- Identify the column where the formatting rules have not been applied. A: Date column B: Ref column C: Item $ column D: Bal $ column
- What is not included in the three column theory ( ). ____ A: Ant. Column B: Mid. Column C: Upper column D: Post. Colum