When executing a query like "select id, 0 as const, val from ...", there are 3 columns(items) in Query->select at handlerton->create_group_by(). After that, MariaDB makes a temporary table with 2 columns. The skipped items are const item, so fixing Spider to skip const items for items at Query->select.
Some functions on ha_partition call functions on all partitions, but handler->reset() is only called that pruned by m_partitions_to_reset. So Spider didn't clear pointer on unpruned partitions, if the unpruned partitions are used by next query, Spider reference the pointer that is already freed.
Some functions on ha_partition call functions on all partitions, but handler->reset() is only called that pruned by m_partitions_to_reset. So Spider didn't clear pointer on unpruned partitions, if the unpruned partitions are used by next query, Spider reference the pointer that is already freed.
Some functions on ha_partition call functions on all partitions, but handler->reset() is only called that pruned by m_partitions_to_reset. So Spider didn't clear pointer on unpruned partitions, if the unpruned partitions are used by next query, Spider reference the pointer that is already freed.
Some functions on ha_partition call functions on all partitions, but handler->reset() is only called that pruned by m_partitions_to_reset. So Spider didn't clear pointer on unpruned partitions, if the unpruned partitions are used by next query, Spider reference the pointer that is already freed.
fix the following type mrr scan
(select 0,`id`,`node` from `auto_test_remote`.`tbl_a` where (`id` <> 0) order by `id`)union all(select 1,`id`,`node` from `auto_test_remote`.`tbl_a` where (`id` <> 0) order by `id`) order by `id`
fix the following type mrr scan
(select 0,`id`,`node` from `auto_test_remote`.`tbl_a` where (`id` <> 0) order by `id`)union all(select 1,`id`,`node` from `auto_test_remote`.`tbl_a` where (`id` <> 0) order by `id`) order by `id`
fix the following type mrr scan
(select 0,`id`,`node` from `auto_test_remote`.`tbl_a` where (`id` <> 0) order by `id`)union all(select 1,`id`,`node` from `auto_test_remote`.`tbl_a` where (`id` <> 0) order by `id`) order by `id`
Change the following function for batch call instead of each partition
- store_lock
- external_lock
- start_stmt
- extra
- cond_push
- info_push
- top_table
When executing a query like "select id, 0 as const, val from ...", there are 3 columns(items) in Query->select at handlerton->create_group_by(). After that, MariaDB makes a temporary table with 2 columns. The skipped items are const item, so fixing Spider to skip const items for items at Query->select.
When executing a query like "select id, 0 as const, val from ...", there are 3 columns(items) in Query->select at handlerton->create_group_by(). After that, MariaDB makes a temporary table with 2 columns. The skipped items are const item, so fixing Spider to skip const items for items at Query->select.
- multi_range_read_info_const now uses the new records_in_range interface
- Added handler::avg_io_cost()
- Don't calculate avg_io_cost() in get_sweep_read_cost if avg_io_cost is
not 1.0. In this case we trust the avg_io_cost() from the handler.
- Changed test_quick_select to use TIME_FOR_COMPARE instead of
TIME_FOR_COMPARE_IDX to align this with the rest of the code.
- Fixed bug when using test_if_cheaper_ordering where we didn't use
keyread if index was changed
- Fixed a bug where we didn't use index only read when using order-by-index
- Added keyread_time() to HEAP.
The default keyread_time() was optimized for blocks and not suitable for
HEAP. The effect was the HEAP prefered table scans over ranges for btree
indexes.
- Fixed get_sweep_read_cost() for HEAP tables
- Ensure that range and ref have same cost for simple ranges
Added a small cost (MULTI_RANGE_READ_SETUP_COST) to ranges to ensure
we favior ref for range for simple queries.
- Fixed that matching_candidates_in_table() uses same number of records
as the rest of the optimizer
- Added avg_io_cost() to JT_EQ_REF cost. This helps calculate the cost for
HEAP and temporary tables better. A few tests changed because of this.
- heap::read_time() and heap::keyread_time() adjusted to not add +1.
This was to ensure that handler::keyread_time() doesn't give
higher cost for heap tables than for normal tables. One effect of
this is that heap and derived tables stored in heap will prefer
key access as this is now regarded as cheap.
- Changed cost for index read in sql_select.cc to match
multi_range_read_info_const(). All index cost calculation is now
done trough one function.
- 'ref' will now use quick_cost for keys if it exists. This is done
so that for '=' ranges, 'ref' is prefered over 'range'.
- scan_time() now takes avg_io_costs() into account
- get_delayed_table_estimates() uses block_size and avg_io_cost()
- Removed default argument to test_if_order_by_key(); simplifies code
The test failed to specify default-character-set when
invoking the client. The compile-time default parameters of the
client could be overridden by configuration files in /etc/mysql.
Let us explicitly specify --default-character-set.
fix bug for spider where using "not like" (#890)
test case:
t1 is a spider engine table;
CREATE TABLE `t1` (
`id` int(11) NOT NULL DEFAULT '0',
`name` char(64) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=SPIDER
query: "select * from t1 where name not like 'x%' " would dispatch "select xxx name name like 'x%' " to remote mysqld, is wrong
Add the following parameter.
- spider_sync_sql_mode
Local sql_mode synchronous existence to remote server.
0 : It doesn't synchronize.
1 : It synchronizes.
The default value is 1
error code 12701 is already included in default value, but other plugin specific error codes are ignored because of checking with ER_ERROR_LAST. ER_ERROR_LAST does not include plugin specific error codes. So I just removed it for fixing this issue.
