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BUG20733: Bug in partition pruning with zerofill field

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Problem was with handling NULL values in ranges


mysql-test/r/partition_hash.result:
  New partition pruning test cases
mysql-test/r/partition_list.result:
  New partition pruning test cases
mysql-test/r/partition_pruning.result:
  New partition pruning test cases
mysql-test/r/partition_range.result:
  New partition pruning test cases
mysql-test/t/partition_hash.test:
  New partition pruning test cases
mysql-test/t/partition_list.test:
  New partition pruning test cases
mysql-test/t/partition_pruning.test:
  New partition pruning test cases
mysql-test/t/partition_range.test:
  New partition pruning test cases
sql/opt_range.cc:
  Added comment
sql/sql_partition.cc:
  Partition pruning didn't handle ranges with NULL values in a proper manner
This commit is contained in:
unknown
2006-07-20 05:28:16 -04:00
parent 98a63cde87
commit d3b743ae18
10 changed files with 521 additions and 1 deletions
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11
sql/sql_partition.cc
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@@ -2415,6 +2415,10 @@ uint32 get_list_array_idx_for_endpoint(partition_info *part_info,
bool unsigned_flag= part_info->part_expr->unsigned_flag;
DBUG_ENTER("get_list_array_idx_for_endpoint");
if (part_info->part_expr->null_value)
{
DBUG_RETURN(0);
}
if (unsigned_flag)
part_func_value-= 0x8000000000000000ULL;
DBUG_ASSERT(part_info->no_list_values);
@@ -2539,6 +2543,13 @@ uint32 get_partition_id_range_for_endpoint(partition_info *part_info,
bool unsigned_flag= part_info->part_expr->unsigned_flag;
DBUG_ENTER("get_partition_id_range_for_endpoint");
if (part_info->part_expr->null_value)
{
uint32 ret_part_id= 0;
if (!left_endpoint && include_endpoint)
ret_part_id= 1;
DBUG_RETURN(ret_part_id);
}
if (unsigned_flag)
part_func_value-= 0x8000000000000000ULL;
while (max_part_id > min_part_id)