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Post-merge fixes.

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2007-04-11 17:10:44 -07:00
parent 91d3299ce6
commit a6d18d56f4
1 changed files with 41 additions and 20 deletions
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61
sql/item_cmpfunc.cc
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@@ -125,7 +125,7 @@ static int cmp_row_type(Item* item1, Item* item2)
0 otherwise
*/
static int agg_cmp_type(THD *thd, Item_result *type, Item **items, uint nitems)
static int agg_cmp_type(Item_result *type, Item **items, uint nitems)
{
uint i;
type[0]= items[0]->result_type();
@@ -146,6 +146,42 @@ static int agg_cmp_type(THD *thd, Item_result *type, Item **items, uint nitems)
}
/*
Collects different types for comparison of first item with each other items
SYNOPSIS
collect_cmp_types()
items Array of items to collect types from
nitems Number of items in the array
DESCRIPTION
This function collects different result types for comparison of the first
item in the list with each of the remaining items in the 'items' array.
RETURN
0 - if row type incompatibility has been detected (see cmp_row_type)
Bitmap of collected types - otherwise
*/
static uint collect_cmp_types(Item **items, uint nitems)
{
uint i;
uint found_types;
Item_result left_result= items[0]->result_type();
DBUG_ASSERT(nitems > 1);
found_types= 0;
for (i= 1; i < nitems ; i++)
{
if ((left_result == ROW_RESULT ||
items[i]->result_type() == ROW_RESULT) &&
cmp_row_type(items[0], items[i]))
return 0;
found_types|= 1<< (uint)item_cmp_type(left_result,
items[i]->result_type());
}
return found_types;
}
static void my_coll_agg_error(DTCollation &c1, DTCollation &c2,
const char *fname)
{
@@ -2069,24 +2105,8 @@ void Item_func_case::fix_length_and_dec()
for (nagg= 0; nagg < ncases/2 ; nagg++)
agg[nagg+1]= args[nagg*2];
nagg++;
found_types= collect_cmp_types(agg, nagg);
for (i= 0; i <= (uint)DECIMAL_RESULT; i++)
{
if (found_types & (1 << i) && !cmp_items[i])
{
DBUG_ASSERT((Item_result)i != ROW_RESULT);
if ((Item_result)i == STRING_RESULT &&
agg_arg_charsets(cmp_collation, agg, nagg, MY_COLL_CMP_CONV, 1))
return;
if (!(cmp_items[i]=
cmp_item::get_comparator((Item_result)i,
cmp_collation.collation)))
return;
}
}
found_types= collect_cmp_types(agg, nagg);
if (!(found_types= collect_cmp_types(agg, nagg)))
return;
for (i= 0; i <= (uint)DECIMAL_RESULT; i++)
{
@@ -2790,7 +2810,8 @@ void Item_func_in::fix_length_and_dec()
uint type_cnt= 0, i;
Item_result cmp_type= STRING_RESULT;
left_result_type= args[0]->result_type();
found_types= collect_cmp_types(args, arg_count);
if (!(found_types= collect_cmp_types(args, arg_count)))
return;
for (arg= args + 1, arg_end= args + arg_count; arg != arg_end ; arg++)
{