diff options
Diffstat (limited to 'src/backend/optimizer/plan/subselect.c')
| -rw-r--r-- | src/backend/optimizer/plan/subselect.c | 41 |
1 files changed, 37 insertions, 4 deletions
diff --git a/src/backend/optimizer/plan/subselect.c b/src/backend/optimizer/plan/subselect.c index 2cf177ab01e..595ff1d46bb 100644 --- a/src/backend/optimizer/plan/subselect.c +++ b/src/backend/optimizer/plan/subselect.c @@ -7,7 +7,7 @@ * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/optimizer/plan/subselect.c,v 1.147 2009/03/10 22:09:26 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/optimizer/plan/subselect.c,v 1.148 2009/04/05 19:59:40 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -412,8 +412,8 @@ build_subplan(PlannerInfo *root, Plan *plan, List *rtable, int paramid; /* - * Initialize the SubPlan node. Note plan_id isn't set till further down, - * likewise the cost fields. + * Initialize the SubPlan node. Note plan_id, plan_name, and cost fields + * are set further down. */ splan = makeNode(SubPlan); splan->subLinkType = subLinkType; @@ -606,6 +606,30 @@ build_subplan(PlannerInfo *root, Plan *plan, List *rtable, root->glob->rewindPlanIDs = bms_add_member(root->glob->rewindPlanIDs, splan->plan_id); + /* Label the subplan for EXPLAIN purposes */ + if (isInitPlan) + { + ListCell *lc; + int offset; + + splan->plan_name = palloc(32 + 12 * list_length(splan->setParam)); + sprintf(splan->plan_name, "InitPlan %d (returns ", splan->plan_id); + offset = strlen(splan->plan_name); + foreach(lc, splan->setParam) + { + sprintf(splan->plan_name + offset, "$%d%s", + lfirst_int(lc), + lnext(lc) ? "," : ""); + offset += strlen(splan->plan_name + offset); + } + sprintf(splan->plan_name + offset, ")"); + } + else + { + splan->plan_name = palloc(32); + sprintf(splan->plan_name, "SubPlan %d", splan->plan_id); + } + /* Lastly, fill in the cost estimates for use later */ cost_subplan(root, splan, plan); @@ -875,7 +899,7 @@ SS_process_ctes(PlannerInfo *root) * Make a SubPlan node for it. This is just enough unlike * build_subplan that we can't share code. * - * Note plan_id isn't set till further down, likewise the cost fields. + * Note plan_id, plan_name, and cost fields are set further down. */ splan = makeNode(SubPlan); splan->subLinkType = CTE_SUBLINK; @@ -931,6 +955,10 @@ SS_process_ctes(PlannerInfo *root) root->cte_plan_ids = lappend_int(root->cte_plan_ids, splan->plan_id); + /* Label the subplan for EXPLAIN purposes */ + splan->plan_name = palloc(4 + strlen(cte->ctename) + 1); + sprintf(splan->plan_name, "CTE %s", cte->ctename); + /* Lastly, fill in the cost estimates for use later */ cost_subplan(root, splan, plan); } @@ -2134,5 +2162,10 @@ SS_make_initplan_from_plan(PlannerInfo *root, Plan *plan, prm = generate_new_param(root, resulttype, resulttypmod); node->setParam = list_make1_int(prm->paramid); + /* Label the subplan for EXPLAIN purposes */ + node->plan_name = palloc(64); + sprintf(node->plan_name, "InitPlan %d (returns $%d)", + node->plan_id, prm->paramid); + return prm; } |