Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
Comment: | Merge the LEFT JOIN query flattener fixes from 3.19.2. |
---|---|
Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA3-256: |
6513e4a121e32df7e5cd95f47cdf8049 |
User & Date: | drh 2017-05-25 17:27:52.435 |
Context
2017-05-25
| ||
21:35 | Small performance increase and size decrease in the btreeInitPage() routine. (check-in: 6f415833e0 user: drh tags: trunk) | |
17:27 | Merge the LEFT JOIN query flattener fixes from 3.19.2. (check-in: 6513e4a121 user: drh tags: trunk) | |
16:50 | Version 3.19.2 (check-in: edb4e819b0 user: drh tags: release, version-3.19.2, branch-3.19) | |
00:08 | The TK_IF_NULL_ROW expression node must be treated as a variable that references the table Expr.iTable. Proposed fix for ticket [7fde638e94287d2c]. (check-in: 77fc23013c user: drh tags: trunk) | |
Changes
Changes to src/select.c.
︙ | ︙ | |||
3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 | */ if( (pSubitem->fg.jointype & JT_OUTER)!=0 ){ isLeftJoin = 1; if( pSubSrc->nSrc>1 || isAgg ){ return 0; /* Restriction (3) */ } } /* Restriction 17: If the sub-query is a compound SELECT, then it must ** use only the UNION ALL operator. And none of the simple select queries ** that make up the compound SELECT are allowed to be aggregate or distinct ** queries. */ if( pSub->pPrior ){ | > > > > > > > > | 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 | */ if( (pSubitem->fg.jointype & JT_OUTER)!=0 ){ isLeftJoin = 1; if( pSubSrc->nSrc>1 || isAgg ){ return 0; /* Restriction (3) */ } } #ifdef SQLITE_EXTRA_IFNULLROW else if( iFrom>0 && !isAgg ){ /* Setting isLeftJoin to -1 causes OP_IfNullRow opcodes to be generated for ** every reference to any result column from subquery in a join, even though ** they are not necessary. This will stress-test the OP_IfNullRow opcode. */ isLeftJoin = -1; } #endif /* Restriction 17: If the sub-query is a compound SELECT, then it must ** use only the UNION ALL operator. And none of the simple select queries ** that make up the compound SELECT are allowed to be aggregate or distinct ** queries. */ if( pSub->pPrior ){ |
︙ | ︙ | |||
3760 3761 3762 3763 3764 3765 3766 | } assert( pParent->pOrderBy==0 ); assert( pSub->pPrior==0 ); pParent->pOrderBy = pOrderBy; pSub->pOrderBy = 0; } pWhere = sqlite3ExprDup(db, pSub->pWhere, 0); | | | 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 | } assert( pParent->pOrderBy==0 ); assert( pSub->pPrior==0 ); pParent->pOrderBy = pOrderBy; pSub->pOrderBy = 0; } pWhere = sqlite3ExprDup(db, pSub->pWhere, 0); if( isLeftJoin>0 ){ setJoinExpr(pWhere, iNewParent); } if( subqueryIsAgg ){ assert( pParent->pHaving==0 ); pParent->pHaving = pParent->pWhere; pParent->pWhere = pWhere; pParent->pHaving = sqlite3ExprAnd(db, |
︙ | ︙ |
Changes to test/releasetest.tcl.
︙ | ︙ | |||
1032 1033 1034 1035 1036 1037 1038 | && $target!="fuzzoomtest" && !$::BUILDONLY && $::QUICK<2} { set debug_idx [lsearch -glob $config_options -DSQLITE_DEBUG*] set xtarget $target regsub -all {fulltest[a-z]*} $xtarget test xtarget regsub -all {fuzzoomtest} $xtarget fuzztest xtarget if {$debug_idx < 0} { incr NTEST | | | 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 | && $target!="fuzzoomtest" && !$::BUILDONLY && $::QUICK<2} { set debug_idx [lsearch -glob $config_options -DSQLITE_DEBUG*] set xtarget $target regsub -all {fulltest[a-z]*} $xtarget test xtarget regsub -all {fuzzoomtest} $xtarget fuzztest xtarget if {$debug_idx < 0} { incr NTEST append config_options " -DSQLITE_DEBUG=1 -DSQLITE_EXTRA_IFNULLROW=1" add_test_suite all "${zConfig}_debug" $xtarget $config_options } else { incr NTEST regsub { *-DSQLITE_MEMDEBUG[^ ]* *} $config_options { } config_options regsub { *-DSQLITE_DEBUG[^ ]* *} $config_options { } config_options add_test_suite all "${zConfig}_ndebug" $xtarget $config_options } |
︙ | ︙ |