From: drh <>
Date: Sat, 22 Jan 2022 22:28:32 +0000 (+0000)
Subject: Add support for the sqlite3_vtab_distinct() interface.  Virtual table
X-Git-Tag: version-3.38.0~96
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=bcba3655eebb87d6620fea13ebbfdf9d032a278d;p=thirdparty%2Fsqlite.git

Add support for the sqlite3_vtab_distinct() interface.  Virtual table
implementations can use this API to determine more detail about the ordering
requirements needed by the query plan and perhaps reduce the amount of
work required to compute a correct answer.  This is an optimization
opportunity for the virtual table implementation.  The correct answer should
still be obtained (though perhaps more slowly) even if sqlite3_vtab_distinct()
is ignored.

FossilOrigin-Name: e4caf1e3932b1bd0dea072df7fc9458aed98c84ea397b6948b89292603949c41
---

bcba3655eebb87d6620fea13ebbfdf9d032a278d
diff --cc manifest
index 577199e3ba,882cfbc89f..c9f7856650
--- a/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
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- D 2022-01-21T19:26:18.123
 -C Bring\ssqlite3_vtab_distinct()\sup\sto\sspec\sso\sthat\sit\sworks\sas\sdescribed\sin\sthe\ndocumentation.
 -D 2022-01-22T20:45:57.210
++C Add\ssupport\sfor\sthe\ssqlite3_vtab_distinct()\sinterface.\s\sVirtual\stable\nimplementations\scan\suse\sthis\sAPI\sto\sdetermine\smore\sdetail\sabout\sthe\sordering\nrequirements\sneeded\sby\sthe\squery\splan\sand\sperhaps\sreduce\sthe\samount\sof\nwork\srequired\sto\scompute\sa\scorrect\sanswer.\s\sThis\sis\san\soptimization\nopportunity\sfor\sthe\svirtual\stable\simplementation.\s\sThe\scorrect\sanswer\sshould\nstill\sbe\sobtained\s(though\sperhaps\smore\sslowly)\seven\sif\ssqlite3_vtab_distinct()\nis\signored.
++D 2022-01-22T22:28:32.461
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diff --cc manifest.uuid
index 7a58964939,e96d220661..4cfc6dc89d
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