| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | pgsql-committers(at)lists(dot)postgresql(dot)org |
| Subject: | pgsql: Don't bother to attach column name lists to RowExprs of named ty |
| Date: | 2022-03-17 22:25:51 |
| Message-ID: | E1nUyZ5-000BJn-1V@gemulon.postgresql.org |
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| Lists: | pgsql-committers |
Don't bother to attach column name lists to RowExprs of named types.
If a RowExpr is marked as returning a named composite type, we aren't
going to consult its colnames list; we'll use the attribute names
shown for the type in pg_attribute. Hence, skip storing that list,
to save a few nanoseconds when copying the expression tree around.
Discussion: https://postgr.es/m/2950001.1638729947@sss.pgh.pa.us
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/d7b5c071dd6af2b81a7042dc60295061c7230cdc
Modified Files
--------------
src/backend/optimizer/prep/prepjointree.c | 6 +++---
src/backend/optimizer/util/var.c | 1 +
src/backend/rewrite/rewriteManip.c | 6 +++---
src/include/nodes/primnodes.h | 16 +++++++---------
4 files changed, 14 insertions(+), 15 deletions(-)
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