From: drh <>
Date: Wed, 19 Oct 2022 10:56:05 +0000 (+0000)
Subject: If a query uses an index where one or more of the columns of the index is
X-Git-Tag: version-3.40.0~134
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=805055f734b1dde892dfeb4c66888b448fb25cff;p=thirdparty%2Fsqlite.git

If a query uses an index where one or more of the columns of the index is
an expression or a virtual column, and if the corresponding expression is
used elsewhere in the query, then strive to read the value of the expression
out of the index, rather than recomputing it.  This is the
"Indexed Expression Optimizations".

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---

805055f734b1dde892dfeb4c66888b448fb25cff
diff --cc manifest
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--- a/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
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- D 2022-10-19T07:51:12.703
 -C If\sa\svirtual\scolumn\swhose\svalue\sis\sconstant\sgets\sindexed,\sdo\snot\sinclude\nthat\scolumn\sin\sthe\sIndexedExpr\slist.\ndbsqlfuzz\s59ac17a99b9a5c4930ee71cc153c9428a0c0e794
 -D 2022-10-18T22:37:07.303
++C If\sa\squery\suses\san\sindex\swhere\sone\sor\smore\sof\sthe\scolumns\sof\sthe\sindex\sis\nan\sexpression\sor\sa\svirtual\scolumn,\sand\sif\sthe\scorresponding\sexpression\sis\nused\selsewhere\sin\sthe\squery,\sthen\sstrive\sto\sread\sthe\svalue\sof\sthe\sexpression\nout\sof\sthe\sindex,\srather\sthan\srecomputing\sit.\s\sThis\sis\sthe\n"Indexed\sExpression\sOptimizations".
++D 2022-10-19T10:56:05.300
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  # Remove this line to create a well-formed Fossil manifest.
diff --cc manifest.uuid
index a16b04e95f,5b7598c5ff..a7c20b191b
--- a/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
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