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| author | Alexander Korotkov <akorotkov@postgresql.org> | 2024-02-15 12:05:52 +0200 |
|---|---|---|
| committer | Alexander Korotkov <akorotkov@postgresql.org> | 2024-02-15 12:06:12 +0200 |
| commit | 9f133763961e280d8ba692bcad0b061b861e9138 (patch) | |
| tree | af76ca54ac251b87aefae347d586e6b300df3c8e /src/backend/tcop/postgres.c | |
| parent | 995d400ceca3e552f84fe19f150fb03327bdc0c2 (diff) | |
| download | postgresql-9f133763961e280d8ba692bcad0b061b861e9138.tar.gz postgresql-9f133763961e280d8ba692bcad0b061b861e9138.zip | |
Pull up ANY-SUBLINK with the necessary lateral support.
For ANY-SUBLINK, we adopted a two-stage pull-up approach to handle
different types of scenarios. In the first stage, the sublink is pulled up
as a subquery. Because of this, when writing this code, we did not have
the ability to perform lateral joins, and therefore, we were unable to
pull up Var with varlevelsup=1. Now that we have the ability to use
lateral joins, we can eliminate this limitation.
Author: Andy Fan <zhihui.fan1213@gmail.com>
Author: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: Richard Guo <guofenglinux@gmail.com>
Reviewed-by: Alena Rybakina <lena.ribackina@yandex.ru>
Reviewed-by: Andrey Lepikhov <a.lepikhov@postgrespro.ru>
Diffstat (limited to 'src/backend/tcop/postgres.c')
0 files changed, 0 insertions, 0 deletions