PL/SQL User’s Guide and Reference - Phần 10

Column_name This is the name of the column (or one of the columns) to be updated. It must be the name of a column in the referenced table or view. A column name cannot be repeated in the column_name list. Column names need not appear in the UPDATE statement in the same order that they appear in the table or view. returning_clause This clause lets you return values from updated rows, thereby eliminating the need to SELECT the rows afterward. You can retrieve the column values into variables and/or host variables, or into collections and/or host arrays. However, you cannot use the RETURNING clause for remote or parallel updates. For the syntax of returning_clause, see "DELETE Statement" on page 11-52.