All procedural code is handled by the PL/SQL engine while all SQL is handled by the SQL statement executor, or SQL engine.
The set of rows the cursor holds is called the set.
There are two types of cursors in PL/SQL: These are created by default when DML statements like, INSERT, UPDATE, and DELETE statements are executed.
Even though the cursor stores multiple records, only one record can be processed at a time, which is called as current row.
When you fetch a row the current row position moves to next row.
Bulk binds can improve the performance when loading collections from a queries.
The SET SERVEROUTPUT ON DECLARE TYPE t_bulk_collect_test_tab IS TABLE OF bulk_collect_test%ROWTYPE; l_tab t_bulk_collect_test_tab := t_bulk_collect_test_tab(); l_start NUMBER; BEGIN -- Time a regular population.
Method 2: Temp table without ID In the second approach, we use a temp table without an identity column and simply grab the top row to process, then loop until we find no more rows to process.
If you're performing an INSERT/UPDATE/DELETE, again, be sure to use the explicit transactions to vastly reduce the load on your log file by committing per loop, which prevents huge rollbacks in the case of failure.
A cursor is a temporary work area created in the system memory when a SQL statement is executed.
A cursor contains information on a select statement and the rows of data accessed by it.
In this tip, I'll share some alternatives to cursors that provide looping functionality.