Zhenglong Li

This is another way to fix #11849, more details can be found at #13823. And is this fix, there has no regression on uncorrelated EXISTS sublinks that have DISTINCT/DISTINCT ON/ORDER...

ubuntu 20.04 企业微信(2.8.10)无法升级到最新版本(3.0.30)

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RT.

Not grab distributed snapshot if it's direct dispatch

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Currently, we will create a distributed snapshot in the function `GetSnapshotData()` if we are QD, and we will iterate `procArray` again to get the global xmin/xmax/xip. But if the current...

[6X] Using postgres query optimizer instead of ORCA to run resgroup group pipeline tests

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This is the backport of #13974. The resource group pipeline uses ORCA as an optimizer by default. But as a resource management tool, it's unimportant which optimizer we use. So...

Fix the value of `Gp_max_tuple_chunk_size`

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This PR is trying to fix the problem that there are 4 bytes in IC package that are never used. When we set `gp_max_packet_size` to the minimum value of 512...

change the name of 'memory_limit' to 'memory_quota'

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`CREATE RESOURCE GROUP` and `ALTER RESOURCE GROUP`, both 6X and 7X have the same parameter name, though the meaning for them is totally different (7X is an absolute number and...

There are 2 commits, please review them respectively. ---- The first commit is quite simple, trying to fix the issue of #17176, just changing the 32-bit integer to 64-bit. ----...

This PR is trying to fix the issue #16680. --- ### 1. Context At #8624, Heikki used `PlaceholderVar` to wrap the SubPlan nodes that could be referred to many times...