Which three are true?（）A、A MERGE statement is used to merge the data of one table with data from another.B、A MERGE statement replaces the data of one table with that of another.C、A MERGE statement can be used to insert new rows into a table.D、A MERGE statement can be used to update existing rows in a table.
Which three are true?（）
- A、A MERGE statement is used to merge the data of one table with data from another.
- B、A MERGE statement replaces the data of one table with that of another.
- C、A MERGE statement can be used to insert new rows into a table.
- D、A MERGE statement can be used to update existing rows in a table.
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