HappenLee opened a new pull request #7785:
URL: https://github.com/apache/incubator-doris/pull/7785
# Proposed changes
Issue Number: close #6238
Co-authored-by: HappenLee <[email protected]>
Co-authored-by: stdpain <[email protected]>
Co-authored-by: Zhengguo Yang <[email protected]>
Co-authored-by: wangbo <[email protected]>
Co-authored-by: emmymiao87 <[email protected]>
Co-authored-by: Pxl <[email protected]>
Co-authored-by: zhangstar333
<[email protected]>
Co-authored-by: thinker <[email protected]>
Co-authored-by: Zeno Yang <[email protected]>
Co-authored-by: Wang Shuo <[email protected]>
Co-authored-by: zhoubintao <[email protected]>
Co-authored-by: Gabriel <[email protected]>
Co-authored-by: xinghuayu007 <[email protected]>
Co-authored-by: weizuo93 <[email protected]>
Co-authored-by: yiguolei <[email protected]>
Co-authored-by: anneji-dev <[email protected]>
Co-authored-by: awakeljw <[email protected]>
Co-authored-by: taberylyang
<[email protected]>
Co-authored-by: Cui Kaifeng <[email protected]>
## Problem Summary:
### 1. Some code from clickhouse
**ClickHouse is an excellent implementation of the vectorized execution
engine database, so here we have borrowed a lot from its excellent
implementation in terms of data structure and function implementation. We are
based on ClickHouse v19.16.2.2 and would like to thank the ClickHouse community
and developers.**
we add all code about Clickhouse Title:
// This file is copied from
//
https://github.com/ClickHouse/ClickHouse/blob/master/src/Interpreters/AggregationCommon.h
// and modified by Doris
### 2. Support exec node and query:
* vaggregation_node
* vanalytic_eval_node
* vassert_num_rows_node
* vblocking_join_node
* vcross_join_node
* vempty_set_node
* ves_http_scan_node
* vexcept_node
* vexchange_node
* vintersect_node
* vmysql_scan_node
* vodbc_scan_node
* volap_scan_node
* vrepeat_node
* vschema_scan_node
* vselect_node
* vset_operation_node
* vsort_node
* vunion_node
* vhash_join_node
You can run exec engine of SSB/TPCH and 70% TPCDS stand query test set.
### 3. Data Model
Vec Exec Engine Support **Dup/Agg/Unq** table, Support Block Reader
Vectorized. Segment Vec is working in process.
### 4. How to use
1. Set the environment variable `set enable_vectorized_engine = true;
`(required)
2. Set the environment variable `set batch_size = 4096; ` (recommended)
### 5. Some diff from origin exec engine
https://github.com/doris-vectorized/doris-vectorized/issues/294
## Checklist(Required)
1. Does it affect the original behavior: (No)
2. Has unit tests been added: (Yes)
3. Has document been added or modified: (No)
4. Does it need to update dependencies: (No)
5. Are there any changes that cannot be rolled back: (Yes)
## Further comments
If this is a relatively large or complex change, kick off the discussion at
[[email protected]](mailto:[email protected]) by explaining why you
chose the solution you did and what alternatives you considered, etc...
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