From eccb42eb0e522646d54b0e1a87d872339a7613dc Mon Sep 17 00:00:00 2001
From: drh <>
Date: Wed, 29 May 2024 14:04:52 +0000
Subject: [PATCH] Small performance enhancement in wherePathSolver()

FossilOrigin-Name: bdab69641df4704f7b080cf7841bbf39da9160222f7b664a79ed662b70ca7b0a
---
 manifest      | 12 ++++++------
 manifest.uuid |  2 +-
 src/where.c   |  6 +++++-
 3 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/manifest b/manifest
index ac9d2b1802..4cd59f57db 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Improvements\sto\scomments\sand\sdebugging\soutput.
-D 2024-05-29T13:29:39.023
+C Small\sperformance\senhancement\sin\swherePathSolver()
+D 2024-05-29T14:04:52.593
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -840,7 +840,7 @@ F src/vxworks.h d2988f4e5a61a4dfe82c6524dd3d6e4f2ce3cdb9
 F src/wal.c 887fc4ca3f020ebb2e376f222069570834ac63bf50111ef0cbf3ae417048ed89
 F src/wal.h ba252daaa94f889f4b2c17c027e823d9be47ce39da1d3799886bbd51f0490452
 F src/walker.c 7c7ea0115345851c3da4e04e2e239a29983b61fb5b038b94eede6aba462640e2
-F src/where.c 8b1e8f8db0d1be2e724c55dd2bd9d6df0d4084455fe5d7c08533ad56bc51f0e9
+F src/where.c ae248eaaa25432b770147e3f76e2b3a933669f207b5b42a831128bb762b73e02
 F src/whereInt.h 002adc3aa2cc10733b9b27958fdbe893987cd989fab25a9853941c1f9b9b0a65
 F src/wherecode.c d5184620bcb5265d59072cb66e1386bfe0331a9ce7614286f9ab79a4fcd00fb8
 F src/whereexpr.c 67d15caf88a1a9528283d68ff578e024cf9fe810b517bb0343e5aaf695ad97dd
@@ -2194,8 +2194,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 21daf2463ef70e6b5dc73ba5bf62b3d2fb504e9189f645ac74b513d3d8b979c2
-R 4cfa81a11fe00a9778c1578283da953a
+P 85164ee155e42809fe34e6c6b6fbe0a2baa9d616326a811173a0b0c8a885fcce
+R 1a7e0e6bfeb5455dea75e487f47f86c2
 U drh
-Z b6f4b963a23017a1edcad5f2b0da308c
+Z a5d1401220c4de69b865dec1abe508f7
 # Remove this line to create a well-formed Fossil manifest.
diff --git a/manifest.uuid b/manifest.uuid
index 1de88c6c8a..57c8db329e 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-85164ee155e42809fe34e6c6b6fbe0a2baa9d616326a811173a0b0c8a885fcce
\ No newline at end of file
+bdab69641df4704f7b080cf7841bbf39da9160222f7b664a79ed662b70ca7b0a
\ No newline at end of file
diff --git a/src/where.c b/src/where.c
index 5a5fd7b28f..fe2e39b9c5 100644
--- a/src/where.c
+++ b/src/where.c
@@ -5457,7 +5457,10 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){
 
         /* At this point, pWLoop is a candidate to be the next loop.
         ** Compute its cost */
-        rUnsorted = sqlite3LogEstAdd(pWLoop->rSetup,pWLoop->rRun + pFrom->nRow);
+        rUnsorted = pWLoop->rRun + pFrom->nRow;
+        if( pWLoop->rSetup ){
+          rUnsorted = sqlite3LogEstAdd(pWLoop->rSetup, rUnsorted);
+        }
         rUnsorted = sqlite3LogEstAdd(rUnsorted, pFrom->rUnsorted);
         nOut = pFrom->nRow + pWLoop->nOut;
         maskNew = pFrom->maskLoop | pWLoop->maskSelf;
@@ -5502,6 +5505,7 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){
         ** to (pTo->isOrdered==(-1))==(isOrdered==(-1))" for the range
         ** of legal values for isOrdered, -1..64.
         */
+        assert( nTo>0 );
         for(jj=0, pTo=aTo; jj<nTo; jj++, pTo++){
           if( pTo->maskLoop==maskNew
            && ((pTo->isOrdered^isOrdered)&0x80)==0
-- 
2.47.2