Allow the planner-related functions and hook to accept the query string.

This commit adds query_string argument into the planner-related functions
and hook and allows us to pass the query string to them.

Currently there is no user of the query string passed. But the upcoming patch
for the planning counters will add the planning hook function into
pg_stat_statements and the function will need the query string. So this change
will be necessary for that patch.

Also this change is useful for some extensions that want to use the query
string in their planner hook function.

Author: Pascal Legrand, Julien Rouhaud
Reviewed-by: Yoshikazu Imai, Tom Lane, Fujii Masao
Discussion: https://postgr.es/m/CAOBaU_bU1m3_XF5qKYtSj1ua4dxd=FWDyh2SH4rSJAUUfsGmAQ@mail.gmail.com
Discussion: https://postgr.es/m/[email protected]

1 files changed, 4 insertions, 2 deletions

diff --git a/src/include/tcop/tcopprot.h b/src/include/tcop/tcopprot.h
index 750ba4a3e25..bd30607b070 100644
--- a/src/include/tcop/tcopprot.h
+++ b/src/include/tcop/tcopprot.h
@@ -52,9 +52,11 @@ extern List *pg_analyze_and_rewrite_params(RawStmt *parsetree,
 										   ParserSetupHook parserSetup,
 										   void *parserSetupArg,
 										   QueryEnvironment *queryEnv);
-extern PlannedStmt *pg_plan_query(Query *querytree, int cursorOptions,
+extern PlannedStmt *pg_plan_query(Query *querytree, const char *query_string,
+								  int cursorOptions,
 								  ParamListInfo boundParams);
-extern List *pg_plan_queries(List *querytrees, int cursorOptions,
+extern List *pg_plan_queries(List *querytrees, const char *query_string,
+							 int cursorOptions,
 							 ParamListInfo boundParams);
 
 extern bool check_max_stack_depth(int *newval, void **extra, GucSource source);