1.5.0 (Not Apache Release)

Milestones

1. The new SQL parsing module removes the dependence on Druid. We only need to parse the sharding context, and adopt a "semi understanding" concept for SQL to further improve performance and compatibility, and reduce code complexity
2. The new SQL rewrite module adds an optimized rewrite module
3. The new SQL merge module is rebuilt into 3 merging engines: streaming, memory and decorator

New Features

1. Support Oracle, SQLServer and PostgreSQL
2. Non functional sub-query support

Enhancements

1. ISSUE #256 Configurable display sharding execute to SQL log
2. ISSUE #291 Processing SQL use stream mode that contains only GroupBy

Changes

1. Simplify the distributed self increasing sequence. Each table is supported by simplifying a multiple self increasing sequence to a single table supporting only a single distributed self increasing sequence, and no longer supporting workerID settings through environment variables
2. Remove support for OR

Bug Fixes

1. ISSUE #239 LIMIT routes to multiple query result sets. If there is only one result set that is not empty, the result of paging is incorrect
2. ISSUE #263 Sharding and logical table configuration can be case insensitive
3. ISSUE #292 When the memory mode handles GROUP BY statement, if there is paging information, it needs to be rewritten
4. ISSUE #295 LIMIT 0 does not filter the result set according to paging restrictions