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Provide FORCE_NULL * and FORCE_NOT_NULL * options for COPY FROM

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These options already exist, but you need to specify a column list for
them, which can be cumbersome. We already have the possibility of all
columns for FORCE QUOTE, so this is simply extending that facility to
FORCE_NULL and FORCE_NOT_NULL.

Author: Zhang Mingli
Reviewed-By: Richard Guo, Kyatoro Horiguchi, Michael Paquier.

Discussion: https://postgr.es/m/CACJufxEnVqzOFtqhexF2+AwOKFrV8zHOY3y=p+gPK6eB14pn_w@mail.gmail.com
This commit is contained in:
Andrew Dunstan
2023-09-30 12:34:41 -04:00
parent c181f2e2bc
commit f6d4c9cf16
8 changed files with 103 additions and 12 deletions
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5
src/backend/commands/copyto.c
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@ -582,10 +582,7 @@ BeginCopyTo(ParseState *pstate,
cstate->opts.force_quote_flags = (bool *) palloc0(num_phys_attrs * sizeof(bool));
if (cstate->opts.force_quote_all)
{
int i;
for (i = 0; i < num_phys_attrs; i++)
cstate->opts.force_quote_flags[i] = true;
MemSet(cstate->opts.force_quote_flags, true, num_phys_attrs * sizeof(bool));
}
else if (cstate->opts.force_quote)
{