Made stored FUNCTION invokation work almost always. Still buggy and unstable, and

various known problems, but good enough for a checkpoint commit.


mysql-test/r/sp.result:
  New tests for invoking simple FUNCTIONs.
mysql-test/t/sp.test:
  New tests for invoking simple FUNCTIONs.
sql/item_func.cc:
  New Item_func_sp for stored FUNCTIONs.
sql/item_func.h:
  New Item_func_sp for stored FUNCTIONs.
sql/sp.cc:
  Close mysql.proc table earlier so recursive find_function calls work.
  Added temporary sp_function_exists() function for checking without parsing.
sql/sp.h:
  Added temporary sp_function_exists() function for checking without parsing.
sql/sp_head.cc:
  New code for executing a FUNCTION. (And reworked some of the old code in the process.)
sql/sp_head.h:
  New code for executing a FUNCTION.
sql/sp_rcontext.h:
  Added result slot for FUNCTIONs.
sql/sql_lex.cc:
  Added check for stored FUNCTION, analogous to UDFs.
sql/sql_parse.cc:
  sp_head::execute was renamed into execute_procedure.
sql/sql_yacc.yy:
  Added parsing of stored FUNCTION invocation and code generation for RETURN statement.

1 files changed, 4 insertions, 0 deletions

diff --git a/sql/sp.h b/sql/sp.h
index 084afb8c8e0..b9ade8fb3c1 100644
--- a/sql/sp.h
+++ b/sql/sp.h
@@ -46,4 +46,8 @@ sp_create_function(THD *thd, char *name, uint namelen, char *def, uint deflen);
 int
 sp_drop_function(THD *thd, char *name, uint namelen);
 
+// QQ Temporary until the function call detection in sql_lex has been reworked.
+bool
+sp_function_exists(THD *thd, LEX_STRING *name);
+
 #endif /* _SP_H_ */