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EmmyMiao87 9f9b666bc1 [Feature](Nereids) Data structure of comparison predicate (#9506 )

1. The data structure of the comparison expression
2. Refactored the inheritance and implementation relationship of tree node

```
        +-- ---- ---- ---+- ---- ---- ---- ---+- ---- ----- ---- ----TreeNode-----------------+
        |                |                    |                                               |
                                                                                              |
        |                |                    |                                               |
                                                                                              v
        v                v                    v                                           Abstract Tree Node
    Leaf Node        Unary Node          Binary Node                              +--------          ---------+
        |                |                    |                                   |        (children)         |
                                                                                  |                           |
        v                v                    v                                   v                           v
Leaf Expression   Unary Expression      Binary Expression              +------Expression----+           Plan Node
        |                |                    |                        |                    |
                                                                       |                    |
        |                |                    |                        v                    v
        |                |                    +- ---- ---- -----> Comparison Predicate     Named Expr
                                                                                       +----   -------+
        |                |                                                             v              v
        |                +- -- --- --- --- --- --- --- --- --- --- --- --- --- ---> Alias Expr      Slot
                                                                                                      ^
        |                                                                                             |
        |                                                                                             |
        +---- --- ---- ------ ---- ------- ------ ------- --- ------ ------ ----- ---- ----- ----- ---+
```

2022-05-16 15:01:13 +08:00

.github

[refactor](Nereids): cascades refactor (#9470 )

2022-05-11 11:07:58 +08:00

[fix](function) fix last_value get wrong result when have order by clause (#9247 )

2022-05-15 23:56:01 +08:00

bin

[fix](script) meet error on start_fe.sh(#9187 )

2022-04-26 10:21:03 +08:00

build-support

[style]add IntelliJ code style xml (#9438 )

2022-05-08 06:41:46 +08:00

conf

[Optimize][RoutineLoad] Avoid sending tasks if there is no data to be consumed (#6805 )

2021-10-13 11:39:01 +08:00

contrib/udf

[UDF] support RPC udaf part 1: support create RPC udaf in fe (#8510 )

2022-04-21 17:38:58 +08:00

dist

[WIP-feature](Optimizer) Nereids code base (#9392 )

2022-05-06 16:22:29 +08:00

docker

[chore][fix](librdkafka) disable librdkafka assert and update some thirdparty (#8425 )

2022-03-12 22:09:06 +08:00

docs

[Doc]Add show tables help documentation (#9568 )

2022-05-15 10:18:33 +08:00

extension

[feature][datax]doriswriter support timeZone (#9327 )

2022-05-06 18:39:10 +08:00

[Feature](Nereids) Data structure of comparison predicate (#9506 )

2022-05-16 15:01:13 +08:00

fe_plugins

[feature] (sql-digest) support sql digest (#8919 )

2022-05-08 17:25:41 +08:00

fs_brokers/apache_hdfs_broker

[Bug] (load) Broker load kerberos auth fail (#9494 )

2022-05-12 15:43:29 +08:00

gensrc

[refactor](es) Clean es tcp scannode and related thrift definitions (#9553 )

2022-05-14 10:03:55 +08:00

regression-test

[fix](function) fix last_value get wrong result when have order by clause (#9247 )

2022-05-15 23:56:01 +08:00

samples

[UDF] support RPC udaf part 1: support create RPC udaf in fe (#8510 )

2022-04-21 17:38:58 +08:00

thirdparty

Revert "[Thirdparty]Add llvm for codegen (#8938 )" (#8948 )

2022-04-11 13:03:16 +08:00

tools

[fix](tools) Access denied when creating tpch tables (#9003 )

2022-04-14 11:45:53 +08:00

[fix](fe-ui) fix home page spin bug #7170 (#7912 )

2022-01-30 16:47:58 +08:00

webroot

[License] Organize and modify the license of the code (#4371 )

2020-08-24 21:51:55 +08:00

.asf.yaml

[doc][community] add more collaborator and modify documents (#9320 )

2022-05-05 20:46:03 +08:00

.clang-format

[refactor][style] Use clang-format to sort includes (#9483 )

2022-05-10 21:25:35 +08:00

.clang-format-ignore

[chore](clang-format)(license-eye) Add Clang Format/Skywalking eyes github action (#7132 )

2021-11-24 10:41:02 +08:00

.clang-tidy

[refactor] add some clang-tidy checks && some code style fix (#8752 )

2022-03-31 13:53:41 +08:00

.editorconfig

[community](*) polish config about project (#8987 )

2022-04-20 14:48:32 +08:00

.gitattributes

Enable auto convert when check in (#1926 )

2019-10-09 22:31:27 +08:00

.gitignore

[refactor][style] Use clang-format to sort includes (#9483 )

2022-05-10 21:25:35 +08:00

.gitmodules

[FE Code Style][step 0]add github action to check incremental code in pr (#9328 )

2022-05-01 17:30:29 +08:00

.licenserc.yaml

[Features]Add dbt doris adapter (#9299 )

2022-04-29 11:40:29 +08:00

.rat-excludes

[improvement] Improve sig handler (#8545 )

2022-03-22 10:40:31 +08:00

build_plugin.sh

[Fix Bug] Fix ehco command not found (#9021 )

2022-04-15 13:43:47 +08:00

build.sh

Clean the version.sh file before build, otherwise the version information in the binary package produced by this compilation is still the commit id of the last time. (#9534 )

2022-05-13 10:23:44 +08:00

CODE_OF_CONDUCT.md

[Doc] Create CODE_OF_CONDUCT.md (#4070 )

2020-07-14 22:28:38 +08:00

CONTRIBUTING_CN.md

[typo](doc) Fix the broken link in the CONTRIBUTING.md (#8876 )

2022-04-14 10:04:32 +08:00

CONTRIBUTING.md

[typo](doc) Fix the broken link in the CONTRIBUTING.md (#8876 )

2022-04-14 10:04:32 +08:00

DISCLAIMER

[Apache] Add DISCLAIMER back (#5531 )

2021-03-18 11:24:19 +08:00

env.sh

[refactor] fix warings when compile with clang (#8069 )

2022-02-19 11:29:02 +08:00

LICENSE.txt

[improvement] Improve sig handler (#8545 )

2022-03-22 10:40:31 +08:00

NOTICE.txt

[license] Organize third-party dependent licenses for bianry releases (#8350 )

2022-03-07 23:18:58 +08:00

README.md

[fix][doc]Modify readme link (#9334 )

2022-04-30 16:55:43 +08:00

run-be-ut.sh

update comments in run-be-ut.sh (#9092 )

2022-04-26 12:48:35 +08:00

run-fe-ut.sh

[Fix Bug] Fix ehco command not found (#9021 )

2022-04-15 13:43:47 +08:00

run-regression-test.sh

[improvement](regression-test) support exclude suite/group/directory (#9096 )

2022-05-05 09:50:07 +08:00

tsan_suppressions

[TSAN] Fix tsan bugs (part 1) (#5162 )

2021-01-15 09:45:11 +08:00

README.md

Apache Doris (incubating)

Doris is an MPP-based interactive SQL data warehousing for reporting and analysis. Its original name was Palo, developed in Baidu. After donated to Apache Software Foundation, it was renamed Doris.

Doris provides high concurrent low latency point query performance, as well as high throughput queries of ad-hoc analysis.
Doris provides batch data loading and real-time mini-batch data loading.
Doris provides high availability, reliability, fault tolerance, and scalability.

The main advantages of Doris are the simplicity (of developing, deploying and using) and meeting many data serving requirements in a single system. For details, refer to Overview.

Official website: https://doris.apache.org/

License

Apache License, Version 2.0

Note

Some licenses of the third-party dependencies are not compatible with Apache 2.0 License. So you need to disable some Doris features to be complied with Apache 2.0 License. For details, refer to the thirdparty/LICENSE.txt

Technology

Doris mainly integrates the technology of Google Mesa and Apache Impala, and it is based on a column-oriented storage engine and can communicate by MySQL client.