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Sql procedure loop while updating records using cursors
Part 12 in a series of articles on understanding and using PL/SQL The central purpose of the Oracle PL/SQL language is to make it as easy and efficient as possible to query and change the contents of tables in a database.
You must, of course, use the SQL language to access tables, and each time you do so, you use a to get the job done.
If there is no such row, the block will fail with an unhandled NO_DATA_FOUND exception.
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When that bonus pool is exhausted, it stops fetching and commits all changes.
In this case, there is just a single column value, so you could just as easily have declared l_employee_id as employees.employee_id%TYPE.
But whenever you use an explicit cursor, it is best to declare a record by using %ROWTYPE, so that if the SELECT list of the cursor ever changes, that variable will change with it.
This article focuses on the most-common ways programmers execute SELECT statements in PL/SQL, namely At the end of the article, I offer some quick tips to help you figure out which of these techniques you should use for different scenarios.
SELECT-INTO offers the fastest and simplest way to fetch a single row from a SELECT statement.