Incorrect usage of UNION and ORDER BY

Tagged: code, databases, dev, mysql

A common problem when using the UNION command in MySQL is when you want to order the sets of data differently. If you do it incorrectly, you will see the error message:

Incorrect usage of UNION and ORDER BY

To solve the problem, wrap each individual SELECT statement in parenthesis as follows:

(SELECT col1,col2,col3 FROM table1)
UNION
(SELECT cola,colb,colc FROM table2)

Nice and simple, all you have to do is remember the brackets!

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3 Comments so far

  1. jimbo_dk on September 19th, 2007

    Thanks…I was having the same problem.

  2. SQL Abfragen nochmal sortieren - Relationale Datenbanken, SQL, MySQL, Oracle, DB2, MSSQL @ tutorials.de: Forum, Tutorial, Anleitung, Schulung & Hilfe on January 3rd, 2008

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  3. Anand Samyo on August 1st, 2008

    Thanks, i was looking for this

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