Disparity in search_path SHOW and SET

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I'm trying to figure out a way to modify the search_path temporarily, but
the "$user" construct is making this difficult. I need to prepend a schema
to the path. This works fine:

SELECT set_config('search_path', '$schema,' || current_setting('search_path'), true);

...but does not last outside of a transaction.

The problem is really that the output of "SHOW search_path" cannot be fed
back into "SET search_path" if the search_path contains the string "$user".

My only option appears to be to have the application parse the string returned
from SHOW search_path, quote the dollar-values, and rebuild the string. Is
there an easier way?

- --
Greg Sabino Mullane greg@turnstep.com
PGP Key: 0x14964AC8 200512201205
http://biglumber.com/x/web?pk=2529DF6AB8F79407E94445B4BC9B906714964AC8
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