| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | pgsql-committers(at)lists(dot)postgresql(dot)org |
| Subject: | pgsql: Handle SubPlan cases in find_nonnullable_rels/vars. |
| Date: | 2022-11-05 19:24:47 |
| Message-ID: | E1orOmd-000aOL-Ps@gemulon.postgresql.org |
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| Lists: | pgsql-committers |
Handle SubPlan cases in find_nonnullable_rels/vars.
We can use some variants of SubPlan to deduce that Vars appearing
in the testexpr must be non-null.
Richard Guo
Discussion: https://postgr.es/m/CAMbWs4-jV=199A2Y_6==99dYnpnmaO_Wz_RGkRTTaCB=Pihw2w@mail.gmail.com
Branch
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master
Details
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https://git.postgresql.org/pg/commitdiff/ff8fa0bf7eb9001f321c2af4bbe9c0f2bd5c1bf8
Modified Files
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src/backend/optimizer/util/clauses.c | 34 ++++++++++++++++++++++++++++++++++
src/test/regress/expected/join.out | 28 ++++++++++++++++++++++++++++
src/test/regress/sql/join.sql | 13 +++++++++++++
3 files changed, 75 insertions(+)
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