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Add FORCE_NOT_NULL support to the file_fdw foreign data wrapper.

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This is implemented as a per-column boolean option, rather than trying
to match COPY's convention of a single option listing the column names.

Shigeru Hanada, reviewed by KaiGai Kohei
This commit is contained in:
Tom Lane
2011-09-16 16:35:51 -04:00
parent 9d306c66e6
commit 86a3f2d492
5 changed files with 185 additions and 12 deletions
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16
contrib/file_fdw/input/file_fdw.source
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@ -78,6 +78,22 @@ CREATE FOREIGN TABLE agg_bad (
) SERVER file_server
OPTIONS (format 'csv', filename '@abs_srcdir@/data/agg.bad', header 'true', delimiter ';', quote '@', escape '"', null '');
-- per-column options tests
CREATE FOREIGN TABLE text_csv (
word1 text OPTIONS (force_not_null 'true'),
word2 text OPTIONS (force_not_null 'off')
) SERVER file_server
OPTIONS (format 'text', filename '@abs_srcdir@/data/text.csv', null 'NULL');
SELECT * FROM text_csv; -- ERROR
ALTER FOREIGN TABLE text_csv OPTIONS (SET format 'csv');
SELECT * FROM text_csv;
-- force_not_null is not allowed to be specified at any foreign object level:
ALTER FOREIGN DATA WRAPPER file_fdw OPTIONS (ADD force_not_null '*'); -- ERROR
ALTER SERVER file_server OPTIONS (ADD force_not_null '*'); -- ERROR
CREATE USER MAPPING FOR public SERVER file_server OPTIONS (force_not_null '*'); -- ERROR
CREATE FOREIGN TABLE tbl () SERVER file_server OPTIONS (force_not_null '*'); -- ERROR
-- basic query tests
SELECT * FROM agg_text WHERE b > 10.0 ORDER BY a;
SELECT * FROM agg_csv ORDER BY a;