Zhenghua Lyu

## Bug Report ### Greenplum version or build Master branch, with top commit (a5fa90c9de) ### Step to reproduce the behavior ```sql create table rank (id int, rank int, year int,...

Arbitrarily cap the size of CUBE, which has exponential grow is not a computationable SQL. Disallow elements more than 12 to keep align with upstream. ---------- * Master branch already...

## Bug Report ### Greenplum version or build Test under Master branch (top commit: ec10c4dfc45d204c4f383bd14b1fb6b50e2c2b23) and 6X_STABLE (top commit: 72d9dff1c40a2bdfae3cc3ddd79206da2a635298) ### Reproduce SQL **NOTE: AO column is key to reproduce...

In AbortTransaction, Postgres does not need to tell other backend to invalidate catcache because the change is invisible. However, Greenplum's MPP architecture has writer gang, reader gangs and gangs can...

Reader QEs cannot execute DML nodes, so I think it is not needed to init result relations for them. -------------------- No test cases are needed for this PR since we...

Reader Gang's old catcache not cleard

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## Bug Report ### Greenplum version or build Tested on master branch with top commit ( 58cb8cf4320bded3b7bca45489575f3412ec5eff ). But seems for me this impact all versions of gpdb. I try...

## Bug Report ### Greenplum version or build master branch with top commit (86d7da285c3fdd95d458d6a77b929c7d42220253) ``` gpadmin@mdw:~/benchmarks/tpcds/sql$ psql tpcds Timing is on. psql (12beta2) Type "help" for help. tpcds=# \i 116.sql...

## Bug Report ### Greenplum version or build 6X (top commit 0eb8cd4a74adf0b10ceac334036f90bfeaa92faa), regerssion problem, regression commit is ebc448703a0b186fa25177fb48a7e5c5463270d7. ### Step to reproduce the behavior ``` gpadmin@zlyu-rr:~/workspace/gpdb$ psql psql (9.4.26) Type...

Bug: special char in dbname is not correctly handled

3

## Reproduce Steps First go to Postgres to create a database: ```sql CREATE DATABASE "funny""db'with\\quotes"; ``` Then run the following python code: ```python In [1]: import pgdb In [2]: dbname...