In a MySQL SELECT query, can I use my "AS column" in a WHERE specification?

Posted by user556352 on Stack Overflow See other posts from Stack Overflow or by user556352
Published on 2010-12-28T19:51:11Z Indexed on 2010/12/28 19:54 UTC
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In my database I calculate distance between nodes with:

SELECT DISTINCT dest.name, AsText(orig.location), AsText(dest.location), round((glength(linestringfromwkb(linestring((orig.location), (dest.location)))))) as distance FROM nodes orig, nodes dest WHERE orig.name='GERP'

I would like to add "and distance < dest.visibility" at the end, but am told that distance is an unknown column.

Any insight very much appreciated.

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In a MySQL SELECT query, can I use my "AS column" in a WHERE specification? - Developer IT

In a MySQL SELECT query, can I use my "AS column" in a WHERE specification?

mysql

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