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Improved EXPLAIN QUERY PLAN output for Bloom filters.

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FossilOrigin-Name: 00070e1fff6aec3d7c7b121f2b02bbca38a1664aca9afc3fb7e293f07fd1704f
This commit is contained in:
drh 2021-12-06 23:07:59 +00:00
parent 23d41e63f2
commit 3bd7cd736d
3 changed files with 36 additions and 19 deletions
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12
manifest
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@ -1,5 +1,5 @@
C Add\sSQLITE_STMTSTATUS_FILTER_HIT\sand\s_MISS\sfor\stracking\sthe\seffectiveness\nof\sBloom\sfilters.
D 2021-12-06T21:45:31.659
C Improved\sEXPLAIN\sQUERY\sPLAN\soutput\sfor\sBloom\sfilters.
D 2021-12-06T23:07:59.482
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@ -640,7 +640,7 @@ F src/wal.h c3aa7825bfa2fe0d85bef2db94655f99870a285778baa36307c0a16da32b226a
F src/walker.c f890a3298418d7cba3b69b8803594fdc484ea241206a8dfa99db6dd36f8cbb3b
F src/where.c 21bd1078837afb127827243d7ad549a4b47022ffaa43c5baa74dcac7f89809a7
F src/whereInt.h 5c6601d6d0b7b8936482506d2d835981cc6efcd8e106a829893a27a14cfb10b8
F src/wherecode.c fa667db48db1077b42731bfd97e9181b39409ffdc7051162ecae6895ca71ad2c
F src/wherecode.c f82a322a8849a0290587d968f5c1c71b0d5018e078f43ea732a4cdbf837ed42b
F src/whereexpr.c 19394cb463003e9cc9305730b1508b8817a22bb7247170d81234b691a7f05b89
F src/window.c 5d3b397b0c026d0ff5890244ac41359e524c01ae31e78782e1ff418c3e271a9e
F test/8_3_names.test ebbb5cd36741350040fd28b432ceadf495be25b2
@ -1934,7 +1934,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
P 8a9036ee617a6ad93bfe827b0789773c49d3d45b085cb76fa4b9b20a41b79b97
R ec73578237c4366b7d0d282bfae04830
P 24ba535d200fc8a99dd8e66c6d100b5f6ae442098bafb152008429398eefe3e7
R 7eae2a1d2a9d2b173d70c0467bdac4ba
U drh
Z e55f2c8840b9a35831f295372358b466
Z 477e7fdac36f7f761dc02a6457a5f233

2
manifest.uuid
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@ -1 +1 @@
24ba535d200fc8a99dd8e66c6d100b5f6ae442098bafb152008429398eefe3e7
00070e1fff6aec3d7c7b121f2b02bbca38a1664aca9afc3fb7e293f07fd1704f

41
src/wherecode.c
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@ -176,19 +176,27 @@ int sqlite3WhereExplainOneScan(
explainIndexRange(&str, pLoop);
}
}else if( (flags & WHERE_IPK)!=0 && (flags & WHERE_CONSTRAINT)!=0 ){
const char *zRangeOp;
char cRangeOp;
#if 0 /* Better output, but breaks many tests */
const Table *pTab = pItem->pTab;
const char *zRowid = pTab->iPKey>=0 ? pTab->aCol[pTab->iPKey].zCnName:
"rowid";
#else
const char *zRowid = "rowid";
#endif
sqlite3_str_appendf(&str, " USING INTEGER PRIMARY KEY (%s", zRowid);
if( flags&(WHERE_COLUMN_EQ|WHERE_COLUMN_IN) ){
zRangeOp = "=";
cRangeOp = '=';
}else if( (flags&WHERE_BOTH_LIMIT)==WHERE_BOTH_LIMIT ){
zRangeOp = ">? AND rowid<";
sqlite3_str_appendf(&str, ">? AND %s", zRowid);
cRangeOp = '<';
}else if( flags&WHERE_BTM_LIMIT ){
zRangeOp = ">";
cRangeOp = '>';
}else{
assert( flags&WHERE_TOP_LIMIT);
zRangeOp = "<";
cRangeOp = '<';
}
sqlite3_str_appendf(&str,
" USING INTEGER PRIMARY KEY (rowid%s?)",zRangeOp);
sqlite3_str_appendf(&str, "%c?)", cRangeOp);
}
#ifndef SQLITE_OMIT_VIRTUALTABLE
else if( (flags & WHERE_VIRTUALTABLE)!=0 ){
@ -243,12 +251,21 @@ int sqlite3WhereExplainBloomFilter(
sqlite3StrAccumInit(&str, db, zBuf, sizeof(zBuf), SQLITE_MAX_LENGTH);
str.printfFlags = SQLITE_PRINTF_INTERNAL;
sqlite3_str_appendf(&str, "BLOOM FILTER ON %S(", pItem);
sqlite3_str_appendf(&str, "BLOOM FILTER ON %S (", pItem);
pLoop = pLevel->pWLoop;
for(i=pLoop->nSkip; i<pLoop->u.btree.nEq; i++){
const char *z = pItem->pTab->aCol[i].zCnName;
if( i>pLoop->nSkip ) sqlite3_str_append(&str, " AND ", 5);
sqlite3_str_appendf(&str, "%s=?", z);
if( pLoop->wsFlags & WHERE_IPK ){
const Table *pTab = pItem->pTab;
if( pTab->iPKey>=0 ){
sqlite3_str_appendf(&str, "%s=?", pTab->aCol[pTab->iPKey].zCnName);
}else{
sqlite3_str_appendf(&str, "rowid=?");
}
}else{
for(i=pLoop->nSkip; i<pLoop->u.btree.nEq; i++){
const char *z = explainIndexColumnName(pLoop->u.btree.pIndex, i);
if( i>pLoop->nSkip ) sqlite3_str_append(&str, " AND ", 5);
sqlite3_str_appendf(&str, "%s=?", z);
}
}
sqlite3_str_append(&str, ")", 1);
zMsg = sqlite3StrAccumFinish(&str);