Re: [HACKERS] generic LONG VARLENA

> However, I see any reference to VARDATA could be a problem because it
> assume the data is there, and not in the long* relations.  I could
> probably figure out which ones need expanding.  They are mostly system
> table accesses.  The others go through adt or are output to the user.

VARDATA looks tricky.  Seems I may need that cache of values.  In most
cases, VARDATA values are used within the next few lines of code, just
like system cache tuples.  If I need it for longer periods, I have to
palloc it.  Good thing most VARDATA values are used for brief periods.

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