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POST indicates that the user is redirected to the form after attempting to save a wish without a description. The values of these elements depend on the Server Request method.If the Server Request method is POST, the values are received from the input form.Consider another table STUDENT_N, which holds updates for the target table STUDENT.Every week, table STUDENT needs to be synchronized with the data in STUDENT_N – any new entries for students who attempted the GMAT to be inserted, plus corrections if any made to the existing details.

In place of 3 separate unwieldy INSERT, UPDATE and DELETE statements with conditional sub-queries, the all-in-one MERGE does the job in one shot.

The current document is a part of the Creating a CRUD Application in the Net Beans IDE for PHP tutorial.

My SQL users: Click here to download the source code that reflects the project state after the previous lesson is completed.

Fortunately, there is another option that does not require using transactions, and can select and update the counter with a single access to the table: Session and Procedure Variables This statement selects the current value of the counter and increments it in a single statement: , and use it after the UPDATE statement (you do not need to execute SELECT @cur_value).

LAST_INSERT_ID Function Instead of using a session or local variable, you can get the same functionality using LAST_INSERT_ID function.

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