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Allow LIKE operators that appear in a WHERE clause to be included in the cursor-hint for a cursor on the rhs of a LEFT JOIN.

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FossilOrigin-Name: 7455d932f5079ffe40462a8c119fc22b8a9bcbcc
This commit is contained in:
dan 2016-06-20 17:22:06 +00:00
parent e6912fd819
commit 2b693d63e4
4 changed files with 28 additions and 9 deletions
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14
manifest
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@ -1,5 +1,5 @@
C Include\sWHERE\sterms\sin\sthe\scursor-hint\spassed\sto\sa\scursor\sopened\sfor\sthe\srhs\sof\sa\sLEFT\sJOIN\siff\swe\scan\sbe\ssure\sthat\sthose\sterms\swill\snot\sevaluate\sto\strue\sif\sthe\sLEFT\sJOIN\sgenerates\sa\srow\sof\sNULLs.
D 2016-06-17T19:27:13.114
C Allow\sLIKE\soperators\sthat\sappear\sin\sa\sWHERE\sclause\sto\sbe\sincluded\sin\sthe\scursor-hint\sfor\sa\scursor\son\sthe\srhs\sof\sa\sLEFT\sJOIN.
D 2016-06-20T17:22:06.973
F Makefile.in f3f7d2060ce03af4584e711ef3a626ef0b1d6340
F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
F Makefile.msc 50149765ef72f4e652b9a0f1f6462c4784bb9423
@ -464,7 +464,7 @@ F src/wal.h 2f7c831cf3b071fa548bf2d5cac640846a7ff19c
F src/walker.c 0f142b5bd3ed2041fc52d773880748b212e63354
F src/where.c 74f0798525b6306682d7234f230ea93f86959b9b
F src/whereInt.h e5b939701a7ceffc5a3a8188a37f9746416ebcd0
F src/wherecode.c c1b11ad09468577afd3c36cd8c854fb6dd77f258
F src/wherecode.c e20cb381ff621e56a4684c71e31999aca2547ca6
F src/whereexpr.c c32d47085dbaca0b8fd013210f56693c7d220d48
F test/8_3_names.test ebbb5cd36741350040fd28b432ceadf495be25b2
F test/affinity2.test a6d901b436328bd67a79b41bb0ac2663918fe3bd
@ -617,7 +617,7 @@ F test/cse.test 277350a26264495e86b1785f34d2d0c8600e021c
F test/csv01.test 0929a9ce47021519512be92861f29e32d2538e5f
F test/ctime.test 7bd009071e242aac4f18521581536b652b789a47
F test/cursorhint.test 7bc346788390475e77a345da2b92270d04d35856
F test/cursorhint2.test cef69bab25b9141071b4239fa5c3b4ce18eeafd0
F test/cursorhint2.test 2b45341d32d1aae9991a00ef31ebca339b274255
F test/date.test 984ac1e3e5e031386866f034006148d3972b4a65
F test/dbstatus.test 8de104bb5606f19537d23cd553b41349b5ab1204
F test/dbstatus2.test e93ab03bfae6d62d4d935f20de928c19ca0ed0ab
@ -1502,7 +1502,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
P fcd12b69cee1335224a65aa6d22c4e302b889398
R aa7c436ce5d8105be03298dc84afa8de
P 998095aba01b75f685ed981b377e1dfe650d9bbf
R 6b36cf1cbd5dc0e94253a2a90e40c230
U dan
Z a2cf93e232f8c6f0bcf6400999626f67
Z 7f5e55d96c0f8c6a30345a5c923b92ab

2
manifest.uuid
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@ -1 +1 @@
998095aba01b75f685ed981b377e1dfe650d9bbf
7455d932f5079ffe40462a8c119fc22b8a9bcbcc

9
src/wherecode.c
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@ -642,12 +642,19 @@ static int codeCursorHintCheckExpr(Walker *pWalker, Expr *pExpr){
** CASE WHEN col THEN 0 ELSE 1 END
*/
static int codeCursorHintIsOrFunction(Walker *pWalker, Expr *pExpr){
if( pExpr->op==TK_IS || pExpr->op==TK_FUNCTION
if( pExpr->op==TK_IS
|| pExpr->op==TK_ISNULL || pExpr->op==TK_ISNOT
|| pExpr->op==TK_NOTNULL || pExpr->op==TK_CASE
){
pWalker->eCode = 1;
}else if( pExpr->op==TK_FUNCTION ){
int d1;
char d2[3];
if( 0==sqlite3IsLikeFunction(pWalker->pParse->db, pExpr, &d1, d2) ){
pWalker->eCode = 1;
}
}
return WRC_Continue;
}

12
test/cursorhint2.test
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@ -164,5 +164,17 @@ do_extract_hints_test 2.10 {
x2 {AND(EQ(c1,ADD(32,32)),EQ(c0,r[2]))}
}
do_extract_hints_test 2.11 {
SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE x2.b LIKE 'abc%'
} {
x2 {AND(expr,EQ(c0,r[2]))}
}
do_extract_hints_test 2.11 {
SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE coalesce(x2.b, 1)
} {
x2 {EQ(c0,r[2])}
}
finish_test