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We store values for these options as array elements with the syntax
"name=value", hence a name containing "=" confuses matters when
it's time to read the array back in. Since validation of the
options is often done (long) after this conversion to array format,
that leads to confusing and off-point error messages. We can
improve matters by rejecting names containing "=" up-front.
(Probably a better design would have involved pairs of array
elements, but it's too late now --- and anyway, there's no
evident use-case for option names like this. We already
reject such names in some other contexts such as GUCs.)
Reported-by: Chapman Flack <jcflack@acm.org>
Author: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: Chapman Flack <jcflack@acm.org>
Discussion: https://postgr.es/m/6830EB30.8090904@acm.org
Backpatch-through: 13
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This commit introduces regression tests to validate incorrect settings
for the ON_ERROR, LOG_VERBOSITY, and REJECT_LIMIT options in file_fdw.
Author: Atsushi Torikoshi
Reviewed-by: Fujii Masao
Suggested-by: Yugo Nagata
Discussion: https://postgr.es/m/20241113231706.09e5b5ea9640289312835be8@sraoss.co.jp
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Commit 4ac2a9bece introduced the REJECT_LIMIT option for the COPY
command. This commit extends the support for this option to file_fdw.
As well as REJECT_LIMIT option for COPY, this option limits
the maximum number of erroneous rows that can be skipped.
If the number of data type conversion errors exceeds this limit,
accessing the file_fdw foreign table will fail with an error,
even when on_error = 'ignore' is specified.
Since the CREATE/ALTER FOREIGN TABLE commands require foreign
table options to be single-quoted, this commit updates
defGetCopyRejectLimitOption() to handle also string value for them,
in addition to int64 value for COPY command option.
Author: Atsushi Torikoshi
Reviewed-by: Fujii Masao, Yugo Nagata, Kirill Reshke
Discussion: https://postgr.es/m/bab68a9fc502b12693f0755b6f35f327@oss.nttdata.com
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In v17, the on_error and log_verbosity options were introduced for
the COPY command. This commit extends support for these options
to file_fdw.
Setting on_error = 'ignore' for a file_fdw foreign table allows users
to query it without errors, even when the input file contains
malformed rows, by skipping the problematic rows.
Both on_error and log_verbosity options apply to SELECT and ANALYZE
operations on file_fdw foreign tables.
Author: Atsushi Torikoshi
Reviewed-by: Masahiko Sawada, Fujii Masao
Discussion: https://postgr.es/m/ab59dad10490ea3734cf022b16c24cfd@oss.nttdata.com
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This allows for a string which if an input field matches causes the
column's default value to be inserted. The advantage of this is that
the default can be inserted in some rows and not others, for which
non-default data is available.
The file_fdw extension is also modified to take allow use of this
option.
Israel Barth Rubio
Discussion: https://postgr.es/m/CAO_rXXAcqesk6DsvioOZ5zmeEmpUN5ktZf-9=9yu+DTr0Xr8Uw@mail.gmail.com
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file_fdw doesn't support INSERT, UPDATE, DELETE and TRUNCATE.
It has the regression test that confirms that INSERT, UPDATE and DELETE
fail on its foreign table, but not TRUNCATE yet. It's better to
also test TRUNCATE fails on a foreign table not allowing TRUNCATE,
for test coverage. This commit adds that regression test using file_fdw.
Author: Yugo Nagata
Reviewed-by: Fujii Masao
Discussion: https://postgr.es/m/20220630104812.ec1556481452c019874f4ac9@sraoss.co.jp
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COPY FROM supports the HEADER option to silently discard the header
line from a CSV or text file. It is possible to load by mistake a
file that matches the expected format, for example, if two text
columns have been swapped, resulting in garbage in the database.
This adds a new option value HEADER MATCH that checks the column names
in the header line against the actual column names and errors out if
they do not match.
Author: Rémi Lapeyre <remi.lapeyre@lenstra.fr>
Reviewed-by: Daniel Verite <daniel@manitou-mail.org>
Reviewed-by: Peter Eisentraut <peter.eisentraut@enterprisedb.com>
Discussion: https://www.postgresql.org/message-id/flat/CAF1-J-0PtCWMeLtswwGV2M70U26n4g33gpe1rcKQqe6wVQDrFA@mail.gmail.com
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The COPY CSV format supports the HEADER option to output a header
line. This patch adds the same option to the default text format. On
input, the HEADER option causes the first line to be skipped, same as
with CSV.
Author: Rémi Lapeyre <remi.lapeyre@lenstra.fr>
Discussion: https://www.postgresql.org/message-id/flat/CAF1-J-0PtCWMeLtswwGV2M70U26n4g33gpe1rcKQqe6wVQDrFA@mail.gmail.com
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"git mv" all the input/*.source and output/*.source files into
the corresponding sql/ and expected/ directories. Then remove
the pg_regress and Makefile infrastructure associated with
dynamic translation.
Discussion: https://postgr.es/m/1655733.1639871614@sss.pgh.pa.us
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This is both very useful in its own right, and an important test case
for the core FDW support.
This commit includes a small refactoring of copy.c to expose its option
checking code as a separately callable function. The original patch
submission duplicated hundreds of lines of that code, which seemed pretty
unmaintainable.
Shigeru Hanada, reviewed by Itagaki Takahiro and Tom Lane
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