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Merge ibabaev@bk-internal.mysql.com:/home/bk/mysql-5.0-opt

Browse source 
into  olga.mysql.com:/home/igor/mysql-5.0-opt
This commit is contained in:
igor@olga.mysql.com 2007-01-31 08:43:42 -08:00
commit 8760182170
2 changed files with 16 additions and 14 deletions
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10
sql/opt_sum.cc
View file

@ -67,9 +67,9 @@ static int maxmin_in_range(bool max_fl, Field* field, COND *cond);
GROUP BY part.
RETURN VALUES
0 No errors
1 if all items were resolved
-1 on impossible conditions
0 no errors
1 if all items were resolved
HA_ERR_KEY_NOT_FOUND on impossible conditions
OR an error number from my_base.h HA_ERR_... if a deadlock or a lock
wait timeout happens, for example
*/
@ -224,7 +224,7 @@ int opt_sum_query(TABLE_LIST *tables, List<Item> &all_fields,COND *conds)
if (error)
{
if (error == HA_ERR_KEY_NOT_FOUND || error == HA_ERR_END_OF_FILE)
return -1; // No rows matching WHERE
return HA_ERR_KEY_NOT_FOUND; // No rows matching WHERE
/* HA_ERR_LOCK_DEADLOCK or some other error */
table->file->print_error(error, MYF(0));
return(error);
@ -311,7 +311,7 @@ int opt_sum_query(TABLE_LIST *tables, List<Item> &all_fields,COND *conds)
if (error)
{
if (error == HA_ERR_KEY_NOT_FOUND || error == HA_ERR_END_OF_FILE)
return -1; // No rows matching WHERE
return HA_ERR_KEY_NOT_FOUND; // No rows matching WHERE
/* HA_ERR_LOCK_DEADLOCK or some other error */
table->file->print_error(error, MYF(0));
return(error);

20
sql/sql_select.cc
View file

@ -707,11 +707,20 @@ JOIN::optimize()
{
int res;
/*
opt_sum_query() returns -1 if no rows match to the WHERE conditions,
or 1 if all items were resolved, or 0, or an error number HA_ERR_...
opt_sum_query() returns HA_ERR_KEY_NOT_FOUND if no rows match
to the WHERE conditions,
or 1 if all items were resolved,
or 0, or an error number HA_ERR_...
*/
if ((res=opt_sum_query(select_lex->leaf_tables, all_fields, conds)))
{
if (res == HA_ERR_KEY_NOT_FOUND)
{
DBUG_PRINT("info",("No matching min/max row"));
zero_result_cause= "No matching min/max row";
error=0;
DBUG_RETURN(0);
}
if (res > 1)
{
thd->fatal_error();
@ -719,13 +728,6 @@ JOIN::optimize()
DBUG_PRINT("error",("Error from opt_sum_query"));
DBUG_RETURN(1);
}
if (res < 0)
{
DBUG_PRINT("info",("No matching min/max row"));
zero_result_cause= "No matching min/max row";
error=0;
DBUG_RETURN(0);
}
DBUG_PRINT("info",("Select tables optimized away"));
zero_result_cause= "Select tables optimized away";
tables_list= 0; // All tables resolved