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 <[email protected]> Author: Tom Lane <[email protected]> Reviewed-by: Tom Lane <[email protected]> Reviewed-by: Richard Guo <[email protected]> Reviewed-by: Alena Rybakina <[email protected]> Reviewed-by: Andrey Lepikhov <[email protected]> Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/9f133763961e280d8ba692bcad0b061b861e9138 Modified Files -------------- contrib/postgres_fdw/expected/postgres_fdw.out | 6 +- contrib/postgres_fdw/sql/postgres_fdw.sql | 4 +- src/backend/optimizer/plan/subselect.c | 17 +++- src/test/regress/expected/join.out | 14 +-- src/test/regress/expected/subselect.out | 126 +++++++++++++++++++++++++ src/test/regress/sql/join.sql | 8 +- src/test/regress/sql/subselect.sql | 37 ++++++++ 7 files changed, 192 insertions(+), 20 deletions(-)
