SQL for sorting boolean column as true, null, false

Posted by petehern on Stack Overflow See other posts from Stack Overflow or by petehern
Published on 2010-05-13T15:39:38Z Indexed on 2010/05/13 16:04 UTC
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Filed under:

sql

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postgresql

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sorting

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boolean

My table has three boolean fields: f1, f2, f3. If I do

SELECT * FROM table ORDER BY f1, f2, f3

the records will be sorted by these fields in the order false, true, null. I wish to order them with null in between true and false: the correct order should be true, null, false.

I am using PostgreSQL.

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