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Add the estimated number of output rows to the EXPLAIN QUERY PLAN output

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if compiled with SQLITE_EXPLAIN_ESTIMATED_ROWS.  This feature is off by
default for the time being.

FossilOrigin-Name: daa8314fba9dc3c4f5e7fbda42c97604fbfc4392
This commit is contained in:
drh
2014-10-10 17:20:39 +00:00
parent 6c97789d2e
commit 98545bb2ed
3 changed files with 14 additions and 7 deletions
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12
manifest
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@@ -1,5 +1,5 @@
C Simplify\sthe\scode\sused\sto\sgenerate\sthe\stext\sfor\sEXPLAIN\sQUERY\sPLAN. C Add\sthe\sestimated\snumber\sof\soutput\srows\sto\sthe\sEXPLAIN\sQUERY\sPLAN\soutput\nif\scompiled\swith\sSQLITE_EXPLAIN_ESTIMATED_ROWS.\s\sThis\sfeature\sis\soff\sby\ndefault\sfor\sthe\stime\sbeing.
D 2014-10-10T15:47:46.266 D 2014-10-10T17:20:39.349
F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
F Makefile.in cf57f673d77606ab0f2d9627ca52a9ba1464146a F Makefile.in cf57f673d77606ab0f2d9627ca52a9ba1464146a
F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -302,7 +302,7 @@ F src/vtab.c 019dbfd0406a7447c990e1f7bd1dfcdb8895697f
F src/wal.c 10e7de7ce90865a68153f001a61f1d985cd17983 F src/wal.c 10e7de7ce90865a68153f001a61f1d985cd17983
F src/wal.h df01efe09c5cb8c8e391ff1715cca294f89668a4 F src/wal.h df01efe09c5cb8c8e391ff1715cca294f89668a4
F src/walker.c c253b95b4ee44b21c406e2a1052636c31ea27804 F src/walker.c c253b95b4ee44b21c406e2a1052636c31ea27804
F src/where.c 23b9e5dd96a51657fb7d81091c28cd84f54dc8a0 F src/where.c b511252533ca9f70e6adfc0ffd5c82594df137a2
F src/whereInt.h 124d970450955a6982e174b07c320ae6d62a595c F src/whereInt.h 124d970450955a6982e174b07c320ae6d62a595c
F test/8_3_names.test ebbb5cd36741350040fd28b432ceadf495be25b2 F test/8_3_names.test ebbb5cd36741350040fd28b432ceadf495be25b2
F test/aggerror.test a867e273ef9e3d7919f03ef4f0e8c0d2767944f2 F test/aggerror.test a867e273ef9e3d7919f03ef4f0e8c0d2767944f2
@@ -1203,7 +1203,7 @@ F tool/vdbe_profile.tcl 67746953071a9f8f2f668b73fe899074e2c6d8c1
F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
F tool/warnings.sh 0abfd78ceb09b7f7c27c688c8e3fe93268a13b32 F tool/warnings.sh 0abfd78ceb09b7f7c27c688c8e3fe93268a13b32
F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
P 68e1b4de700b5291f79249a03e1a750c6b2c9ae4 P beea1efc3a49cad08087fcbb18dbce71c873fe57
R 1d64962e74f9e7c1f94f06e344d62c75 R a0896f7681cce645a858136a6e4bda47
U drh U drh
Z 5a7fbeb924ed3728c1bc69e5188e226a Z 8fddc2c9d3b88cabdf0b2692b84338ef

2
manifest.uuid
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@@ -1 +1 @@
beea1efc3a49cad08087fcbb18dbce71c873fe57 daa8314fba9dc3c4f5e7fbda42c97604fbfc4392

7
src/where.c
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@@ -2875,6 +2875,13 @@ static void explainOneScan(
sqlite3XPrintf(&str, 0, " VIRTUAL TABLE INDEX %d:%s", sqlite3XPrintf(&str, 0, " VIRTUAL TABLE INDEX %d:%s",
pLoop->u.vtab.idxNum, pLoop->u.vtab.idxStr); pLoop->u.vtab.idxNum, pLoop->u.vtab.idxStr);
} }
#endif
#ifdef SQLITE_EXPLAIN_ESTIMATED_ROWS
if( pLoop->nOut>=10 ){
sqlite3XPrintf(&str, 0, " (~%llu rows)", sqlite3LogEstToInt(pLoop->nOut));
}else{
sqlite3StrAccumAppend(&str, " (~1 row)", 9);
}
#endif #endif
zMsg = sqlite3StrAccumFinish(&str); zMsg = sqlite3StrAccumFinish(&str);
sqlite3VdbeAddOp4(v, OP_Explain, iId, iLevel, iFrom, zMsg, P4_DYNAMIC); sqlite3VdbeAddOp4(v, OP_Explain, iId, iLevel, iFrom, zMsg, P4_DYNAMIC);