| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | pgsql-committers(at)postgresql(dot)org |
| Subject: | pgsql: Fix ancient thinko in default table rowcount estimation. |
| Date: | 2015-01-18 22:04:18 |
| Message-ID: | E1YCxxC-0005Ce-Ej@gemulon.postgresql.org |
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| Lists: | pgsql-committers |
Fix ancient thinko in default table rowcount estimation.
The code used sizeof(ItemPointerData) where sizeof(ItemIdData) is correct,
since we're trying to account for a tuple's line pointer. Spotted by
Tomonari Katsumata (bug #12584).
Although this mistake is of very long standing, no back-patch, since it's
a relatively harmless error and changing it would risk changing default
planner behavior in stable branches. (I don't see any change in regression
test outputs here, but the buildfarm may think differently.)
Branch
------
master
Details
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http://git.postgresql.org/pg/commitdiff/75df6dc083f7a989697b5002a421fb204f2eeddb
Modified Files
--------------
src/backend/optimizer/util/plancat.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
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