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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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2
src/include/commands/copy.h
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@@ -56,8 +56,10 @@ typedef struct CopyFormatOptions
bool force_quote_all; /* FORCE_QUOTE *? */
bool *force_quote_flags; /* per-column CSV FQ flags */
List *force_notnull; /* list of column names */
bool force_notnull_all; /* FORCE_NOT_NULL *? */
bool *force_notnull_flags; /* per-column CSV FNN flags */
List *force_null; /* list of column names */
bool force_null_all; /* FORCE_NULL *? */
bool *force_null_flags; /* per-column CSV FN flags */
bool convert_selectively; /* do selective binary conversion? */
List *convert_select; /* list of column names (can be NIL) */