Hi Konstantin,
On 2/3/16 11:47 AM, Konstantin Knizhnik wrote:
Attached please find patch for "ALTER INDEX ... WHERE ..." clause.
It is now able to handle all three possible situations:
1. Making index partial (add WHERE condition to the ordinary index)
2. Extend partial index range (less restricted index predicate)
3. Arbitrary change of partial index predicate
In case 2) new records are added to the index.
In other two cases index is completely reconstructed.
This patch includes src/bin/insbench utility for testing insert
performance. It can be easily excluded from the patch to reduce it size.
Also it is better to apply this patch together with "index-only scans
with partial indexes" patch:
This patch no longer applies on master:
$ git apply ../other/alter-index.patch
../other/alter-index.patch:27: trailing whitespace.
static void
../other/alter-index.patch:62: indent with spaces.
SPIPlanPtr plan;
../other/alter-index.patch:63: indent with spaces.
Portal portal;
../other/alter-index.patch:90: trailing whitespace.
../other/alter-index.patch:99: trailing whitespace.
error: patch failed: src/test/regress/expected/aggregates.out:831
error: src/test/regress/expected/aggregates.out: patch does not apply
Please provide a new patch for review. Meanwhile I am marking this
"waiting on author".
Thanks,
--
-David
da...@pgmasters.net
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