chenbaggio

gporca can not evaluate correct input rows when lacking histogram

3

## Bug Report ### Greenplum version or build gpdb 6.x - PostgreSQL 9.4.24 (Greenplum Database 6.9.0 build 9999) ### OS version and uname -a Linux i-90cp5pkf 3.10.0-1160.59.1.el7.x86_64 #1 SMP Wed...

Is any plan to develop 'utf8_slice_charunits' like existed 'utf8_slice_codeunits'

8

STOP! Are you reporting a bug, a possible bug, or requesting a feature? If so, please report under the ARROW project on the ASF JIRA server https://issues.apache.org/jira/browse/ARROW. This JIRA server...

1. gpdb version gpdb_6x_stable debug版 2. gporca version gpdb_6x_stable 内置 3. 问题描述 对两个表做`EXPLAIN`, `LEFT JOIN` 并设立了一个numeric(30,8)列的等值条件, 但是在优化过程中在 函数 ``` gpopt::CExpressionHandle::DeriveRootStats ``` 中会出现异常，具体语句为 ``` pstatsRoot = popLogical->PstatsDerive(m_mp, *this, stats_ctxt); ``` 基本判断是内存有被破坏...