Cursor for updating a column plsql
However, removing the open cursor with the JDBC method invalidates the positioned update.
A CREATE or DROP INDEX statement or an ALTER TABLE statement for the target table of a prepared positioned update invalidates the prepared positioned update statement.
changed_buff.count INSERT INTO changed VALUES changed_buff( i ); END; / can contain ten thousands and more rows, then this procedure might be slow, becasue it will consume a huge amount of PGA memory.Whenever you alter the value of a column referenced by the -- All the employees except the manager of -- department (WORKDEPT) 'E21' have been temporarily reassigned.-- Indicate this by changing their job (JOB) to NULL and their pay -- (SALARY, BONUS, COMM) values to zero in the EMPLOYEE table.Specifying DEFAULT for the update value sets the value of the column to the default defined for that table.The DEFAULT literal is the only value which you can directly assign to a generated column.
Search for cursor for updating a column plsql:
Dropping an alias invalidates a prepared update statement if the latter statement uses the alias.