[#1863] Support more DML queries which can be pushed down to MySQL directly. More Detail,see 3.SQL_Syntax/3.2_DML
[#1849] Refactor config files:There are big changes for config files of dble, More Detail,see 1.00_config_file . If you want to upgrade your old configs(must be 2.20.04.x) to new configs， you can use the tool named dble_update_config. .
[#1848] Support online ddl. More Detail,see online_ddl
[#1846] send query by WriteToBackendExecutor in complex query
[#1906] Supports the tool OGG for data synchronization (alpha)
[#2030] Execute a complex SQL which contains many unions but hang
[#2029] Occur error"field not found:c.成功一" when the column name contains Chinese
[#2025] Error when there is constant in select
[#2022] Round function have problem
[#2021] After multiple unions and subqueries, the column order is incorrect
[#1977] The query needs to be printed in the log，when management commands not supported
[#1939] When PreparedStatement is enabled, multiple insert operations on tables containing data types such as blob、text; the inserted value contains the value of the previous SQL insert/update.
[#1926] If sharding value is a hex type,dble will report error or route to the wrong node
[#1913] When two sharding_table inner join , the select DATEDIFF() result is different from one table select DATEDIFF()
[#1820] JDBC has problems saving pictures via setblob or setBinaryStream , thanks to @z3093964447 for reporting the bug.
[#1814] When load data failed,the file:temp was left behind
[#1788] Front connect timeout,may cause heartbeat detection to fail
[#1760] Contaminate mysql connection pool when doing ddl in xa transaction
[#1701] Expect the default xa log name and xa log directoty name contain 'xa'
[#1678] Column name of [show tables] resultset is not consistent with mysql
[#1658] When tempReadHostAvailable="1",
show slave statusnot work, thanks to @dairight for reporting the bug.
Breaking backward compatibility:
[#1849] Refactor config files:There are big changes for config files of dble, More Detail,see 1.00_config_file . If you want to upguard your old configs(must be 2.20.04.x) to new configs by tool.
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