Re: bad variable subst after "AS"

Excerpts from Darren Duncan's message of jue sep 16 02:33:37 -0400 2010:

> My impression of this is that Pg is treating the "a1" after the "AS" like it was
> a variable reference and so substituted it for $1.

Yes.

> Now that just seems wrong to me.  I can understand either "a0" or "rv" getting a
> substitution, but something following an "AS" being substituted is just wrong.
> 
> Is that a bug and if not then what is the rationale for working that way, and
> can it be changed?

Fixed in 9.0.

> Meanwhile, what is the best way to write f to work around this misbehavior?

Give the column a different alias, one not colliding with a variable name.

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