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| author | Heikki Linnakangas <heikki.linnakangas@iki.fi> | 2013-02-27 18:17:21 +0200 |
|---|---|---|
| committer | Heikki Linnakangas <heikki.linnakangas@iki.fi> | 2013-02-27 18:22:31 +0200 |
| commit | 3d009e45bde2a2681826ef549637ada76508b597 (patch) | |
| tree | 6f429ba5f7bbfee65dfd14fcfacd19a2e0ddd053 /contrib/file_fdw/file_fdw.c | |
| parent | 73dc003beef859e0b67da463c5e28f5468d3f17f (diff) | |
| download | postgresql-3d009e45bde2a2681826ef549637ada76508b597.tar.gz postgresql-3d009e45bde2a2681826ef549637ada76508b597.zip | |
Add support for piping COPY to/from an external program.
This includes backend "COPY TO/FROM PROGRAM '...'" syntax, and corresponding
psql \copy syntax. Like with reading/writing files, the backend version is
superuser-only, and in the psql version, the program is run in the client.
In the passing, the psql \copy STDIN/STDOUT syntax is subtly changed: if you
the stdin/stdout is quoted, it's now interpreted as a filename. For example,
"\copy foo from 'stdin'" now reads from a file called 'stdin', not from
standard input. Before this, there was no way to specify a filename called
stdin, stdout, pstdin or pstdout.
This creates a new function in pgport, wait_result_to_str(), which can
be used to convert the exit status of a process, as returned by wait(3),
to a human-readable string.
Etsuro Fujita, reviewed by Amit Kapila.
Diffstat (limited to 'contrib/file_fdw/file_fdw.c')
| -rw-r--r-- | contrib/file_fdw/file_fdw.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/contrib/file_fdw/file_fdw.c b/contrib/file_fdw/file_fdw.c index d644a46ea7d..d1cca1ec3ed 100644 --- a/contrib/file_fdw/file_fdw.c +++ b/contrib/file_fdw/file_fdw.c @@ -588,6 +588,7 @@ fileBeginForeignScan(ForeignScanState *node, int eflags) */ cstate = BeginCopyFrom(node->ss.ss_currentRelation, filename, + false, NIL, options); @@ -660,6 +661,7 @@ fileReScanForeignScan(ForeignScanState *node) festate->cstate = BeginCopyFrom(node->ss.ss_currentRelation, festate->filename, + false, NIL, festate->options); } @@ -993,7 +995,7 @@ file_acquire_sample_rows(Relation onerel, int elevel, /* * Create CopyState from FDW options. */ - cstate = BeginCopyFrom(onerel, filename, NIL, options); + cstate = BeginCopyFrom(onerel, filename, false, NIL, options); /* * Use per-tuple memory context to prevent leak of memory used to read |