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mirror of https://github.com/postgres/postgres.git synced 2025-07-31 22:04:40 +03:00

Honor TMPDIR.

Add the script name to the tmp directory name.

Move trap up now that the dir is more unique.
This commit is contained in:
Bruce Momjian
2004-11-04 02:04:10 +00:00
parent ed9e8f5480
commit c21214f1c0
2 changed files with 11 additions and 7 deletions

View File

@ -250,12 +250,17 @@ Indexes
order. Another method would be to sort heap ctids matching the index
before accessing the heap rows.
* Use bitmaps to combine existing indexes [performance]
* Allow the creation of bitmap indexes which can be quickly combined
with other bitmap indexes
Bitmap indexes allow single indexed columns to be combined to
dynamically create a composite index to match a specific query. Each
index is a bitmap, and the bitmaps are AND'ed or OR'ed to be combined.
Bitmap indexes index single columns and can be combined with other bitmap
indexes to dynamically create a composite index to match a specific query.
Each index is a bitmap, and the bitmaps are bitwise AND'ed or OR'ed to be
combined.
* Allow non-bitmap indexes to be combined
Do loUse bitmaps to combine non-bitmap indexes
* Allow use of indexes to search for NULLs
One solution is to create a partial index on an IS NULL expression.