diff options
Diffstat (limited to 'src/backend/commands/variable.c')
| -rw-r--r-- | src/backend/commands/variable.c | 103 |
1 files changed, 96 insertions, 7 deletions
diff --git a/src/backend/commands/variable.c b/src/backend/commands/variable.c index 9cf3b930087..17728b35a37 100644 --- a/src/backend/commands/variable.c +++ b/src/backend/commands/variable.c @@ -2,7 +2,7 @@ * Routines for handling of 'SET var TO', * 'SHOW var' and 'RESET var' statements. * - * $Id: variable.c,v 1.15 1998/10/08 23:50:28 tgl Exp $ + * $Id: variable.c,v 1.16 1998/10/14 05:09:58 momjian Exp $ * */ @@ -18,6 +18,10 @@ #ifdef MULTIBYTE #include "mb/pg_wchar.h" #endif +#ifdef QUERY_LIMIT +#include "executor/executor.h" +#include "executor/execdefs.h" +#endif static bool show_date(void); static bool reset_date(void); @@ -40,6 +44,11 @@ static bool parse_geqo(const char *); static bool show_ksqo(void); static bool reset_ksqo(void); static bool parse_ksqo(const char *); +#ifdef QUERY_LIMIT +static bool show_query_limit(void); +static bool reset_query_limit(void); +static bool parse_query_limit(const char *); +#endif extern Cost _cpu_page_wight_; extern Cost _cpu_index_page_wight_; @@ -48,7 +57,11 @@ extern int32 _use_geqo_rels_; extern bool _use_right_sided_plans_; extern bool _use_keyset_query_optimizer; -/*-----------------------------------------------------------------------*/ +/* + * + * Get_Token + * + */ static const char * get_token(char **tok, char **val, const char *str) { @@ -149,7 +162,11 @@ get_token(char **tok, char **val, const char *str) return str; } -/*-----------------------------------------------------------------------*/ +/* + * + * GEQO + * + */ static bool parse_geqo(const char *value) { @@ -221,6 +238,11 @@ reset_geqo(void) return TRUE; } +/* + * + * R_PLANS + * + */ static bool parse_r_plans(const char *value) { @@ -240,7 +262,6 @@ parse_r_plans(const char *value) return TRUE; } -/*-----------------------------------------------------------------------*/ static bool show_r_plans() { @@ -264,7 +285,11 @@ reset_r_plans() return TRUE; } -/*-----------------------------------------------------------------------*/ +/* + * + * COST_HEAP + * + */ static bool parse_cost_heap(const char *value) { @@ -297,7 +322,11 @@ reset_cost_heap() return TRUE; } -/*-----------------------------------------------------------------------*/ +/* + * + * COST_INDEX + * + */ static bool parse_cost_index(const char *value) { @@ -330,7 +359,11 @@ reset_cost_index() return TRUE; } -/*-----------------------------------------------------------------------*/ +/* + * + * DATE_STYLE + * + */ static bool parse_date(const char *value) { @@ -448,6 +481,11 @@ static char *defaultTZ = NULL; static char TZvalue[64]; static char tzbuf[64]; +/* + * + * TIMEZONE + * + */ /* parse_timezone() * Handle SET TIME ZONE... * Try to save existing TZ environment variable for later use in RESET TIME ZONE. @@ -545,7 +583,53 @@ reset_timezone() return TRUE; } /* reset_timezone() */ +/* + * + * Query_limit + * + */ +#ifdef QUERY_LIMIT +static bool +parse_query_limit(const char *value) +{ + int32 limit; + + if (value == NULL) { + reset_query_limit(); + return(TRUE); + } + limit = pg_atoi(value, sizeof(int32), '\0'); + if (limit <= -1) { + elog(ERROR, "Bad value for # of query limit (%s)", value); + } + ExecutorLimit(limit); + return(TRUE); +} + +static bool +show_query_limit(void) +{ + int limit; + + limit = ExecutorGetLimit(); + if (limit == ALL_TUPLES) { + elog(NOTICE, "No query limit is set"); + } else { + elog(NOTICE, "query limit is %d",limit); + } + return(TRUE); +} + +static bool +reset_query_limit(void) +{ + ExecutorLimit(ALL_TUPLES); + return(TRUE); +} +#endif + /*-----------------------------------------------------------------------*/ + struct VariableParsers { const char *name; @@ -584,6 +668,11 @@ struct VariableParsers { "ksqo", parse_ksqo, show_ksqo, reset_ksqo }, +#ifdef QUERY_LIMIT + { + "query_limit", parse_query_limit, show_query_limit, reset_query_limit + }, +#endif { NULL, NULL, NULL, NULL } |