Increment a column in MySQL using the UPDATE query

Suppose you have a column in your table that you use as a counter (storing the value of the counter - eg. times an article has been displayed).

Basically what I used to do is something similar to the following:

  1. SELECT counter_field_value FROM table1 WHERE column1='this_article'
  2. Add 1 to counter_field_value
  3. UPDATE table1 SET counter_field_value=<new_counter_field_value> WHERE column1='this_article'

Combined with a PHP script this could be a few lines for something really small.


The quick trick to this is to do it all in one query:

UPDATE table1 SET counter_field_value=counter_field_value+1 WHERE column1='this_article'
  1.  UPDATE table1 SET counter_field_value=counter_field_value+1 WHERE column1='this_article' 
Category: MySQL :: Article: 243

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