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Relax pointless restrictions on allowing tables in the FROM clause from

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crossing over LEFT JOINs, as long as the table being moved is not the
right table of the LEFT JOIN.

FossilOrigin-Name: c1ea064948ba08c4be209ad6efc2126a7367bcb06266ea35eb957bf2d4e2cb9f
This commit is contained in:
drh 2020-07-16 18:55:58 +00:00
parent 369e758fdc
commit b1c993f681
3 changed files with 10 additions and 10 deletions
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12
manifest
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@ -1,6 +1,6 @@
B 7a876209a678a34c198b54ceef9e3c041f128a14dc73357f6a57cadadaa6cf7b
C Small\sperformance\simprovement\sand\ssize\sreduction\sin\ssqlite3DbStrNDup().
D 2020-07-16T14:19:57.140
C Relax\spointless\srestrictions\son\sallowing\stables\sin\sthe\sFROM\sclause\sfrom\ncrossing\sover\sLEFT\sJOINs,\sas\slong\sas\sthe\stable\sbeing\smoved\sis\snot\sthe\nright\stable\sof\sthe\sLEFT\sJOIN.
D 2020-07-16T18:55:58.182
F Makefile.in 19374a5db06c3199ec1bab71ab74a103d8abf21053c05e9389255dc58083f806
F Makefile.msc 48f5a3fc32672c09ad73795749f6253e406a31526935fbbffd8f021108d54574
F autoconf/Makefile.am a8d1d24affe52ebf8d7ddcf91aa973fa0316618ab95bb68c87cabf8faf527dc8
@ -32,7 +32,7 @@ F src/update.c 6a0484134635f167594d597a33d186051125d3ef41803a90b246cea6cf7f11f9
F src/util.c c0bacc165f46169d2b720c37c8719165e383211698fad1de39dd16a8c161815a
F src/vdbe.c 981666c49d33039df6dc9fccd40191575586ac4866255b2f57819cc5eb99f572
F src/vdbeapi.c c1a9004ac554d8d48794d2ce5f80397f8e419fd28643a543cc1e004c7713c3ef
F src/where.c 35cb38d45294118e484fd3a8011aaee8ebe96b28855a6913575a7fe3722d7af5
F src/where.c 2ea911238674e9baaeddf105dddabed92692a01996073c4d4983f9a7efe481f9
F src/window.c 0dec178bfa541c757d15a2be78f34aea36393a0966600366810e5f8739ccf370
F test/altertab.test b8b2104212e8ea87c75c3cbe3cb78ed7236a6c828ee2e59ed09d3dbe9812d002
F test/busy2.test 415364312743992641f9bf679c84918327296067f85a5d00012b339dc35acbd7
@ -53,7 +53,7 @@ F tool/mksqlite3c.tcl f4ef476510eca4124c874a72029f1e01bc54a896b1724e8f9eef0d8bfa
F tool/mksqlite3h.tcl 1f5e4a1dbbbc43c83cc6e74fe32c6c620502240b66c7c0f33a51378e78fc4edf
F tool/showlocks.c 9cc5e66d4ebbf2d194f39db2527ece92077e86ae627ddd233ee48e16e8142564
F tool/speed-check.sh 615cbdf50f1409ef3bbf9f682e396df80f49d97ed93ed3e61c8e91fae6afde58
P 73d62f82f94347c60e026bc9cb859fec2d8b5f0c756df0c4941f11817234bff8
R f09333fed65b681a6fbe59d83c290bad
P 35cd87063d1933b87bc2176f957ecd758d7d167e9473fa615e33caec3be14783
R 746d9475007e84ed494c6df8218f252e
U drh
Z 6c54c89f5e7635548f965099a9cbdebe
Z e8621449358c788389d3aef6e8aa26e8

2
manifest.uuid
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@ -1 +1 @@
35cd87063d1933b87bc2176f957ecd758d7d167e9473fa615e33caec3be14783
c1ea064948ba08c4be209ad6efc2126a7367bcb06266ea35eb957bf2d4e2cb9f

6
src/where.c
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@ -3610,7 +3610,6 @@ static int whereLoopAddAll(WhereLoopBuilder *pBuilder){
sqlite3 *db = pWInfo->pParse->db;
int rc = SQLITE_OK;
WhereLoop *pNew;
u8 priorJointype = 0;
/* Loop over the tables in the join, from left to right */
pNew = pBuilder->pNew;
@ -3621,12 +3620,13 @@ static int whereLoopAddAll(WhereLoopBuilder *pBuilder){
pNew->iTab = iTab;
pBuilder->iPlanLimit += SQLITE_QUERY_PLANNER_LIMIT_INCR;
pNew->maskSelf = sqlite3WhereGetMask(&pWInfo->sMaskSet, pItem->iCursor);
if( ((pItem->fg.jointype|priorJointype) & (JT_LEFT|JT_CROSS))!=0 ){
if( (pItem->fg.jointype & (JT_LEFT|JT_CROSS))!=0 ){
/* This condition is true when pItem is the FROM clause term on the
** right-hand-side of a LEFT or CROSS JOIN. */
mPrereq = mPrior;
}else{
mPrereq = 0;
}
priorJointype = pItem->fg.jointype;
#ifndef SQLITE_OMIT_VIRTUALTABLE
if( IsVirtual(pItem->pTab) ){
struct SrcList_item *p;