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Show opclass and opfamily related information in psql

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This commit provides psql commands for listing operator classes, operator
families and its contents in psql.  New commands will be useful for exploring
capabilities of both builtin opclasses/opfamilies as well as
opclasses/opfamilies defined in extensions.

Discussion: https://postgr.es/m/1529675324.14193.5.camel%40postgrespro.ru
Author: Sergey Cherkashin, Nikita Glukhov, Alexander Korotkov
Reviewed-by: Michael Paquier, Alvaro Herrera, Arthur Zakirov
Reviewed-by: Kyotaro Horiguchi, Andres Freund
This commit is contained in:
Alexander Korotkov
2020-03-08 13:32:25 +03:00
parent 691e8b2e18
commit b0b5e20cd8
8 changed files with 676 additions and 2 deletions
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33
src/bin/psql/command.c
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@@ -721,7 +721,38 @@ exec_command_d(PsqlScanState scan_state, bool active_branch, const char *cmd)
success = listTables("tvmsE", NULL, show_verbose, show_system);
break;
case 'A':
success = describeAccessMethods(pattern, show_verbose);
{
char *pattern2 = NULL;
if (pattern && cmd[2] != '\0' && cmd[2] != '+')
pattern2 = psql_scan_slash_option(scan_state, OT_NORMAL, NULL, true);
switch (cmd[2])
{
case '\0':
case '+':
success = describeAccessMethods(pattern, show_verbose);
break;
case 'c':
success = listOperatorClasses(pattern, pattern2, show_verbose);
break;
case 'f':
success = listOperatorFamilies(pattern, pattern2, show_verbose);
break;
case 'o':
success = listOpFamilyOperators(pattern, pattern2, show_verbose);
break;
case 'p':
success = listOpFamilyProcedures(pattern, pattern2);
break;
default:
status = PSQL_CMD_UNKNOWN;
break;
}
if (pattern2)
free(pattern2);
}
break;
case 'a':
success = describeAggregates(pattern, show_verbose, show_system);