Bug #21809: Error 1356 while selecting from view with grouping though underlying

            select OK.
The SQL parser was using Item::name to transfer user defined function attributes
to the user defined function (udf). It was not distinguishing between user defined 
function call arguments and stored procedure call arguments. Setting Item::name 
was causing Item_ref::print() method to print the argument as quoted identifiers 
and caused views that reference aggregate functions as udf call arguments (and 
rely on Item::print() for the text of the view to store) to throw an undefined 
identifier error.
Overloaded Item_ref::print to print aggregate functions as such when printing
the references to aggregate functions taken out of context by split_sum_func2()
Fixed the parser to properly detect using AS clause in stored procedure arguments
as an error.
Fixed printing the arguments of udf call to print properly the udf attribute.

1 files changed, 2 insertions, 0 deletions

diff --git a/sql/sql_lex.cc b/sql/sql_lex.cc
index 788276ac654..a65d36cb07c 100644
--- a/sql/sql_lex.cc
+++ b/sql/sql_lex.cc
@@ -163,6 +163,7 @@ void lex_start(THD *thd, uchar *buf,uint length)
   lex->select_lex.ftfunc_list= &lex->select_lex.ftfunc_list_alloc;
   lex->select_lex.group_list.empty();
   lex->select_lex.order_list.empty();
+  lex->select_lex.udf_list.empty();
   lex->current_select= &lex->select_lex;
   lex->yacc_yyss=lex->yacc_yyvs=0;
   lex->ignore_space=test(thd->variables.sql_mode & MODE_IGNORE_SPACE);
@@ -1166,6 +1167,7 @@ void st_select_lex::init_select()
   braces= 0;
   when_list.empty();
   expr_list.empty();
+  udf_list.empty();
   interval_list.empty();
   use_index.empty();
   ftfunc_list_alloc.empty();