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Add tab completion for ALTER DATABASE RESET

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Currently tab completion for ALTER DATABASE RESET shows a list of all
configuration parameters that may be set on a database, irrespectively
of which parameters are actually set. This patch improves tab completion
to offer only parameters that are set.

Author: Robins Tharakan
Reviewed-By: Tomas Vondra
Discussion: https://postgr.es/m/CAEP4nAzqiT6VbVC5r3nq5byLTnPzjniVGzEMpYcnAHQyNzEuaw%40mail.gmail.com
This commit is contained in:
Tomas Vondra
2025-02-17 17:49:53 +01:00
parent fc069a3a63
commit 9df8727c50
1 changed files with 19 additions and 1 deletions
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20
src/bin/psql/tab-complete.in.c
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@ -1000,6 +1000,15 @@ static const SchemaQuery Query_for_trigger_of_table = {
"SELECT datname FROM pg_catalog.pg_database "\
" WHERE datname LIKE '%s'"
#define Query_for_list_of_database_vars \
"SELECT conf FROM ("\
" SELECT setdatabase, pg_catalog.split_part(unnest(setconfig),'=',1) conf"\
" FROM pg_db_role_setting "\
" ) s, pg_database d "\
" WHERE s.setdatabase = d.oid "\
" AND conf LIKE '%s'"\
" AND d.datname LIKE '%s'"
#define Query_for_list_of_tablespaces \
"SELECT spcname FROM pg_catalog.pg_tablespace "\
" WHERE spcname LIKE '%s'"
@ -2320,6 +2329,13 @@ match_previous_words(int pattern_id,
"IS_TEMPLATE", "ALLOW_CONNECTIONS",
"CONNECTION LIMIT");
/* ALTER DATABASE <name> RESET */
else if (Matches("ALTER", "DATABASE", MatchAny, "RESET"))
{
set_completion_reference(prev2_wd);
COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_database_vars, "ALL");
}
/* ALTER DATABASE <name> SET TABLESPACE */
else if (Matches("ALTER", "DATABASE", MatchAny, "SET", "TABLESPACE"))
COMPLETE_WITH_QUERY(Query_for_list_of_tablespaces);
@ -4906,7 +4922,9 @@ match_previous_words(int pattern_id,
/* SET, RESET, SHOW */
/* Complete with a variable name */
else if (TailMatches("SET|RESET") && !TailMatches("UPDATE", MatchAny, "SET"))
else if (TailMatches("SET|RESET") &&
!TailMatches("UPDATE", MatchAny, "SET") &&
!TailMatches("ALTER", "DATABASE", MatchAny, "RESET"))
COMPLETE_WITH_QUERY_VERBATIM_PLUS(Query_for_list_of_set_vars,
"CONSTRAINTS",
"TRANSACTION",