Someone along the way suggested doing this as a kind of "wrapper" PL language.
So you would have a PL language like "obfuscate:plperl" which would obfuscate
the source code on the way in. Then when you execute a function it would
deobfuscate the source code and then just pass it to the normal plperl.

In such a scheme I think you would put the key in an attribute of the
language. Either in pg_lang or some configuration location which the
obfuscate:plperl interpreter knows where to find.

  Gregory Stark
  Ask me about EnterpriseDB's On-Demand Production Tuning

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