pingcap/tidb

push avg & distinct functions across join when tidb_opt_agg_push_down is set

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#16.355 aperta il 14 apr 2020

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Bug Report

Please answer these questions before submitting your issue. Thanks!

1. What did you do?

When tidb_opt_agg_push_down is on, currently it does not support pushing avg function and distinct functions across Join.

After https://github.com/pingcap/tidb/pull/16344, it supports pushing those across Union, we should make it happen w/ Join, too.

2. What did you expect to see?

3. What did you see instead?

4. What version of TiDB are you using? (tidb-server -V or run select tidb_version(); on TiDB)

e90aac271

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