IN now aggregates all argument types for comparison

mysql-test/r/func_in.result

@@ -143,3 +143,24 @@ select * from t1 where 'a' in (a,b,c collate latin1_bin);
 a	b	c
 a	c	c
 drop table t1;
+select '1.0' in (1,2);
+'1.0' in (1,2)
+1
+select 1 in ('1.0',2);
+1 in ('1.0',2)
+1
+select 1 in (1,'2.0');
+1 in (1,'2.0')
+1
+select 1 in ('1.0',2.0);
+1 in ('1.0',2.0)
+1
+select 1 in (1.0,'2.0');
+1 in (1.0,'2.0')
+1
+select 1 in ('1.1',2);
+1 in ('1.1',2)
+0
+select 1 in ('1.1',2.0);
+1 in ('1.1',2.0)
+0

mysql-test/t/func_in.test

@@ -73,3 +73,11 @@ select * from t1 where 'a' collate latin1_general_ci in (a,b,c);
 select * from t1 where 'a' collate latin1_bin in (a,b,c);
 select * from t1 where 'a' in (a,b,c collate latin1_bin);
 drop table t1;
+
+select '1.0' in (1,2);
+select 1 in ('1.0',2);
+select 1 in (1,'2.0');
+select 1 in ('1.0',2.0);
+select 1 in (1.0,'2.0');
+select 1 in ('1.1',2);
+select 1 in ('1.1',2.0);

sql/item_cmpfunc.cc

@@ -1405,7 +1405,8 @@ void Item_func_in::fix_length_and_dec()
   Item **arg, **arg_end;
   uint const_itm= 1;
   
-  if ((args[0]->result_type() == STRING_RESULT) &&
+  agg_cmp_type(&cmp_type, args, arg_count);
+  if ((cmp_type == STRING_RESULT) &&
       (agg_arg_collations_for_comparison(cmp_collation, args, arg_count)))
     return;
   
@@ -1418,7 +1419,7 @@ void Item_func_in::fix_length_and_dec()
   */
   if (const_itm && !nulls_in_row())
   {
-    switch (args[0]->result_type()) {
+    switch (cmp_type) {
     case STRING_RESULT:
       uint i;
       array=new in_string(arg_count-1,(qsort2_cmp) srtcmp_in, 
@@ -1452,7 +1453,7 @@ void Item_func_in::fix_length_and_dec()
   else
   {
     in_item= cmp_item::get_comparator(args[0]);
-    if (args[0]->result_type() == STRING_RESULT)
+    if (cmp_type  == STRING_RESULT)
       in_item->cmp_charset= cmp_collation.collation;
   }
   maybe_null= args[0]->maybe_null;

sql/item_cmpfunc.h

@@ -611,6 +611,7 @@ class cmp_item_sort_string_in_static :public cmp_item_string
 
 class Item_func_in :public Item_int_func
 {
+  Item_result cmp_type;
   in_vector *array;
   cmp_item *in_item;
   bool have_null;