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When an index is used by all branches of the WHERE_MULTI_OR optimization and

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becomes a covering index, make sure the index has been created prior to
NULLing it in the OP_NullRow opcode of a LEFT JOIN.  See
[forum:/forumpost/0575376e07|forum post 0575376e07]. The covering-index for
WHERE_MULTI_OR optimization was added by [62678be3df35cdcb].  Test cases are
in the orindex01.test module of TH3.

FossilOrigin-Name: 787c76a865dc51dbca4f30432d64783199c2efb1df4619e4bbaf32182977321e
This commit is contained in:
drh
2021-06-22 23:24:58 +00:00
parent 2c7188732d
commit 415ac68ae8
3 changed files with 14 additions and 8 deletions
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14
manifest
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@@ -1,5 +1,5 @@
C Add\sthe\ssqlite3_changes64()\sand\ssqlite3_total_changes64()\sAPI\sfunctions.
D 2021-06-22T18:32:05.878
C When\san\sindex\sis\sused\sby\sall\sbranches\sof\sthe\sWHERE_MULTI_OR\soptimization\sand\nbecomes\sa\scovering\sindex,\smake\ssure\sthe\sindex\shas\sbeen\screated\sprior\sto\nNULLing\sit\sin\sthe\sOP_NullRow\sopcode\sof\sa\sLEFT\sJOIN.\s\sSee\n[forum:/forumpost/0575376e07|forum\spost\s0575376e07].\sThe\scovering-index\sfor\nWHERE_MULTI_OR\soptimization\swas\sadded\sby\s[62678be3df35cdcb].\s\sTest\scases\sare\nin\sthe\sorindex01.test\smodule\sof\sTH3.
D 2021-06-22T23:24:58.974
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F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -631,7 +631,7 @@ F src/vxworks.h d2988f4e5a61a4dfe82c6524dd3d6e4f2ce3cdb9
F src/wal.c c8ec20a1ca161d5635a4f19c2a4efec2e006e19a8a61f272bf6bce1c80ab7436
F src/wal.h c3aa7825bfa2fe0d85bef2db94655f99870a285778baa36307c0a16da32b226a
F src/walker.c 7342becedf3f8a26f9817f08436bdf8b56ad69af83705f6b9320a0ad3092c2ac
F src/where.c 4caf843825c6292440113258fefaa6f747fd570c6915628957e42e39529988f5
F src/where.c 07a4097fe42a01b1f99d2a136598654051f0bdcd6c17cbef7fa285a9cf21e4d2
F src/whereInt.h 9248161dd004f625ce5d3841ca9b99fed3fc8d61522cf76340fc5217dbe1375b
F src/wherecode.c 9f1f65d11437b25cd0a1497a170514c785f19ce6ad9d3e6fc73719cb5a49012f
F src/whereexpr.c 5a9c9f5d2dac4bcdcaae3035034b4667523f731df228e0bb1d4efc669efa9da5
@@ -1919,7 +1919,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
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@@ -1 +1 @@
48fdec22c966003f5577e0bf52906ef90df11e4e395723a646304e67ed976f37
787c76a865dc51dbca4f30432d64783199c2efb1df4619e4bbaf32182977321e

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src/where.c
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@@ -5528,6 +5528,12 @@ void sqlite3WhereEnd(WhereInfo *pWInfo){
if( (ws & WHERE_INDEXED)
|| ((ws & WHERE_MULTI_OR) && pLevel->u.pCovidx)
){
if( ws & WHERE_MULTI_OR ){
Index *pIx = pLevel->u.pCovidx;
int iDb = sqlite3SchemaToIndex(db, pIx->pSchema);
sqlite3VdbeAddOp3(v, OP_ReopenIdx, pLevel->iIdxCur, pIx->tnum, iDb);
sqlite3VdbeSetP4KeyInfo(pParse, pIx);
}
sqlite3VdbeAddOp1(v, OP_NullRow, pLevel->iIdxCur);
}
if( pLevel->op==OP_Return ){