kyle.cao

[Optimizer] Column Pruning

3

The following statement can crop column `b` to optimize performance: ``` MATCH (a:teacher), (b:team) RETURN a.name ``` Currently this statement has the same overhead as the following statement, they all...

Inconsistent handling of dangling edges leads to incorrect results. **Environments** nebula 3.x **How To Reproduce** ``` (root@nebula) [nba]> insert edge like() values "Tim Duncan"->"emptyPoint":() Execution succeeded (time spent 2049/2361 us)...

Inactive indexes should not be selected

1

**Describe the bug (__required__)** A newly created index that has not been rebuilt is selected causing a query exception. **Your Environments (__required__)** version: v3.0 **How To Reproduce(__required__)** ``` (root@nebula) [nba]>...

Support DataX

1

**Feature description** [DataX](https://github.com/alibaba/DataX) is an offline data synchronization framework open sourced by Alibaba Cloud.This framework provides a unified abstraction for data synchronization. Users can implement Reader/Writer plugins to integrate data...

An exception occurs after multi-match statement executed multiple times

7

**Describe the bug (__required__)** An exception occurs after multi-match statement executed multiple times. **Your Environments (__required__)** nebula 3.1.0 **How To Reproduce(__required__)** ``` (root@nebula) [nba]> match (v:player) where v.player.name == "Tim...

Enhance property pruning rule

1

At present, our property pruning optimization only considers the symbols between operators without analyzing specific expressions, so some statements that can be optimized may be ignored. The following statement can...

Incorrect data filtering when the where clause of optional match refers to variables declared in other match. **Environment** version 3.0 **How To Reproduce** ``` (root@nebula) [nba]> MATCH (m)-[]-(n) WHERE id(m)=="Tim...

Enhance ScanVertices/ScanEdges and some index selecting logics

1

Degenerates to `ScanVertices/ScanEdges` only if no index exists. In other words, there will be `IndexScan` on the execution plan as long as there is an index available.(Fix Query1 and refactor...

**Feature Description** In many scenarios, users will not (or cannot) specify the rank explicitly. For example, the rank of bank transfer is set to the timestamp at that time, which...

GeoSeries to_sql not support

1

**Describe the bug** GeoSeries did not behave as expected when call to_sql. **To Reproduce** My test code: ```python import pandas as pd from arctern import GeoSeries import arctern def trans2wkb4series(s,index=range(0,0)):...