jakevin

Could the developer offer a More detailed manual？

5

Perhaps just an example can't explain its usage in great detail. Or, this library is for those skilled developers. additionally,maybe it isn't reasonable that using the screenshots as instruction in...

Readings in Database Systems 已经出了第5版了

1

http://www.redbook.io/index.html 这是第5版的链接 我目前正在翻译 这是我的翻译链接 https://github.com/jackwener/Readings-in-Database-Systems-5th-CN

Datafusion Optimizer Enhancement

2

**Is your feature request related to a problem or challenge? Please describe what you are trying to do.** Enhance Optimizer Summary: - [x] https://github.com/apache/arrow-datafusion/issues/217 - [ ] https://github.com/apache/arrow-datafusion/issues/475 - [...

# Proposed changes Issue Number: close #xxx ## Problem summary refactor equals code in Catalog dir. ## Checklist(Required) 1. Does it affect the original behavior: - [ ] Yes -...

[feature](nereids): SimplifyCastRule

1

# Proposed changes Issue Number: close #xxx ## Problem summary - Remove redundant cast like - cast(1 as int) -> 1. - Merge cast like - cast(cast(1 as bigint) as...

Add Usage Example

5

## What you want to add I have tried to add it in my test repo. It didn't work. It will be better to add Usage Example ## Why this...

# Proposed changes Issue Number: close #xxx ## Problem summary Describe your changes. ## Checklist(Required) 1. Does it affect the original behavior: - [ ] Yes - [x] No -...

# Proposed changes Issue Number: close #xxx ## Problem summary - fix Outer LAsscom, current forgot to check onCondtion for Outer LAsscom - improve onConditon checker. ## Checklist(Required) 1. Does...

# Proposed changes Issue Number: close #xxx ## Problem summary current pushdownFilterThroughJoin just push inside `EqualTo` we should push cmp. ## Checklist(Required) 1. Does it affect the original behavior: -...

[Enhancement] Use `NIO` to replace the legacy IO.

5

### Search before asking - [X] I had searched in the [issues](https://github.com/apache/incubator-doris/issues?q=is%3Aissue) and found no similar issues. ### Description The legacy IO is hard to use. After Java 7, the...