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Expose a routine to print triggers during EXPLAIN ANALYZE 

This is so that auto_explain can use it.

Kyotaro HORIGUCHI
This commit is contained in:
Alvaro Herrera 2014-01-20 17:12:50 -03:00
parent fe0c690dfd
commit d2458e3b20
2 changed files with 38 additions and 23 deletions
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60
src/backend/commands/explain.c
View File

@ -486,29 +486,7 @@ ExplainOnePlan(PlannedStmt *plannedstmt, IntoClause *into, ExplainState *es,
/* Print info about runtime of triggers */
if (es->analyze)
{
ResultRelInfo *rInfo;
bool show_relname;
int numrels = queryDesc->estate->es_num_result_relations;
List *targrels = queryDesc->estate->es_trig_target_relations;
int nr;
ListCell *l;
ExplainOpenGroup("Triggers", "Triggers", false, es);
show_relname = (numrels > 1 || targrels != NIL);
rInfo = queryDesc->estate->es_result_relations;
for (nr = 0; nr < numrels; rInfo++, nr++)
report_triggers(rInfo, show_relname, es);
foreach(l, targrels)
{
rInfo = (ResultRelInfo *) lfirst(l);
report_triggers(rInfo, show_relname, es);
}
ExplainCloseGroup("Triggers", "Triggers", false, es);
}
ExplainPrintTriggers(es, queryDesc);
/*
* Close down the query and free resources. Include time for this in the
@ -564,6 +542,42 @@ ExplainPrintPlan(ExplainState *es, QueryDesc *queryDesc)
ExplainNode(queryDesc->planstate, NIL, NULL, NULL, es);
}
/*
* ExplainPrintTriggers -
* convert a QueryDesc's trigger statistics to text and append it to
* es->str
*
* The caller should have set up the options fields of *es, as well as
* initializing the output buffer es->str. Other fields in *es are
* initialized here.
*/
void
ExplainPrintTriggers(ExplainState *es, QueryDesc *queryDesc)
{
ResultRelInfo *rInfo;
bool show_relname;
int numrels = queryDesc->estate->es_num_result_relations;
List *targrels = queryDesc->estate->es_trig_target_relations;
int nr;
ListCell *l;
ExplainOpenGroup("Triggers", "Triggers", false, es);
show_relname = (numrels > 1 || targrels != NIL);
rInfo = queryDesc->estate->es_result_relations;
for (nr = 0; nr < numrels; rInfo++, nr++)
report_triggers(rInfo, show_relname, es);
foreach(l, targrels)
{
rInfo = (ResultRelInfo *) lfirst(l);
report_triggers(rInfo, show_relname, es);
}
ExplainCloseGroup("Triggers", "Triggers", false, es);
}
/*
* ExplainQueryText -
* add a "Query Text" node that contains the actual text of the query

1
src/include/commands/explain.h
View File

@ -71,6 +71,7 @@ extern void ExplainOnePlan(PlannedStmt *plannedstmt, IntoClause *into,
const char *queryString, ParamListInfo params);
extern void ExplainPrintPlan(ExplainState *es, QueryDesc *queryDesc);
extern void ExplainPrintTriggers(ExplainState *es, QueryDesc *queryDesc);
extern void ExplainQueryText(ExplainState *es, QueryDesc *queryDesc);