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Create a psql command \gset to store query results into psql variables.

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This eases manipulation of query results in psql scripts.

Pavel Stehule, reviewed by Piyush Newe, Shigeru Hanada, and Tom Lane
This commit is contained in:
Tom Lane
2013-02-02 17:06:38 -05:00
parent 101d6ae755
commit d2d153fdb0
10 changed files with 254 additions and 15 deletions
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18
src/bin/psql/command.c
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@ -731,7 +731,7 @@ exec_command(const char *cmd,
free(fname);
}
/* \g [filename] means send query, optionally with output to file/pipe */
/* \g [filename] -- send query, optionally with output to file/pipe */
else if (strcmp(cmd, "g") == 0)
{
char *fname = psql_scan_slash_option(scan_state,
@ -748,6 +748,22 @@ exec_command(const char *cmd,
status = PSQL_CMD_SEND;
}
/* \gset [prefix] -- send query and store result into variables */
else if (strcmp(cmd, "gset") == 0)
{
char *prefix = psql_scan_slash_option(scan_state,
OT_NORMAL, NULL, false);
if (prefix)
pset.gset_prefix = prefix;
else
{
/* we must set a non-NULL prefix to trigger storing */
pset.gset_prefix = pg_strdup("");
}
status = PSQL_CMD_SEND;
}
/* help */
else if (strcmp(cmd, "h") == 0 || strcmp(cmd, "help") == 0)
{