Skip to main content

How can We do INSERT and UPDATE through a single MySQL Query? - "INSERT ..... ON DUPLICATE KEY UPDATE" Syntax

How can We do INSERT and UPDATE through a single MySQL Query? - "INSERT ..... ON DUPLICATE KEY UPDATE" Syntax

INSERT and UPDATE Actions in one MySQL Statement

Usually Update functions will check for a record with given key and if it exist then function will execute the UPDATE Query else perform an INSERT Query. So here happens a SELECT query on Table Followed by INSERTION / UPDATION of a Record.

You can do this in single MySQL query. How?

the Answer is "ON DUPLICATE KEY UPDATE" Option provided by MySQL from its 4.1.0 version onwards.


INSERT INTO YOUR_TABLE_NAME( ID, COL1, COL2 ) VALUES ( $id, $col1_val, $col2_val )
ON DUPLICATE KEY UPDATE COL1 = $col1_val, COL2=$col2_val

If you use the clause "ON DUPLICATE KEY UPDATE", and a row is inserted that would cause a duplicate value in a UNIQUE index or PRIMARY KEY, an UPDATE of the existing row is performed.

The ON DUPLICATE KEY UPDATE clause can contain multiple column assignments, separated by commas.
With ON DUPLICATE KEY UPDATE, the affected-rows value per row is 1 if the row is inserted as a new row, and 2 if an existing row is updated.

References: - INSERT ..... ON DUPLICATE KEY UPDATE" - Query Speed test


Popular posts from this blog

How to apply for a new ration card and what are the documents required?

List of documents required for new ration card application in Kerala and how to apply

Application for a new ration card should be addressed to Taluk Supply Officer (TSO) / City Rationing Officer (CRO) of applicant's residing area.

Primary document required are Residence certificate, Income certificate and incase the applicant's name is in another ration card then he/she should submit the reduction certificate ontained from previous TSO / CRO as proof for removing his/her name from old Ration card.

You can get the new application from your currently residing Taluk Supply Office.

Payback Points - How to redeem - How to merge multiple payback accounts - Block Payback card - Payback customer care

Joomla and Forum Integration - Integrating Forums to Joomla

Joomla is one of the most popular CMS opensource packages. It is very easier to develop website's using Joomla. You just need to download Joomla package from Joomla's Official website  and install it on your domain and later adding customizations to templates and feature and Your website is ready :). Now a days most websites provides a forum section for it users for discussing various article topics, gathering opinions etc.

Following are some best know forum opensource packages which can be integrated with Joomla and create a new forum experience for users

Urgent Openings for PHP trainees, Andriod / IOS developers and PHP developers in Kochi Trivandrum Calicut and Bangalore. Please Send Your updated resumes to   Read more »
Search This Blog