-C Make\sthe\squery\splanners\suse\sof\spartial\sindexes\sbased\son\sbound\svariables\nresponsive\sto\sthe\sSQLITE_DBCONFIG_ENABLE_QPSG\ssetting.
-D 2017-06-28T18:25:03.706
+C Alternative\simplementation\sof\sexprCompareVariable().\s\sNeed\sto\srun\stests\son\nboth\sthis\sbranch\sand\sthe\soriginal\sto\ssee\swhich\sone\sto\sgo\swith.
+D 2017-06-28T21:47:16.657
F Makefile.in 1cc758ce3374a32425e4d130c2fe7b026b20de5b8843243de75f087c0a2661fb
F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
F Makefile.msc 8eeb80162074004e906b53d7340a12a14c471a83743aab975947e95ce061efcc
F src/date.c cc42a41c7422389860d40419a5e3bce5eaf6e7835c3ba2677751dc653550a5c7
F src/dbstat.c 19ee7a4e89979d4df8e44cfac7a8f905ec89b77d
F src/delete.c 3213547e97b676c6fa79948b7a9ede4801ea04a01a2043241deafedf132ecf5d
-F src/expr.c 9aea9dbac1169c5cda3ee5d288b9e6c25de597a38023f8104406e0312145ca8d
+F src/expr.c 8281b9e5b88862176862c614acda20fdeb85c20143c5125cee4efd2893c1a64e
F src/fault.c 460f3e55994363812d9d60844b2a6de88826e007
F src/fkey.c 5ff2c895fe087756d8085dc1a9bc229b5670e2a65c3929dd87c71e43649af333
F src/func.c 9d52522cc8ae7f5cdadfe14594262f1618bc1f86083c4cd6da861b4cf5af6174
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 8f63c5863231eba7f853f9587b58a81102c31708402fa9962a6e91aa622fad13
-R c0bca5815e0b14a60d8900b0ad5f06a7
+P a934dd14ac55177ac541423f4a077484bb3b461b60c9c2e88d067cca922fa2bc
+R d8af740d34bab1193c95ada6cd028712
+T *branch * partial-index-variables-v2
+T *sym-partial-index-variables-v2 *
+T -sym-partial-index-variables *
U drh
-Z afcf7a655c64b8f5d4a7cb72e9e49496
+Z 929717708efb4b9fc1714d496de51de5
*/
static int exprCompareVariable(Parse *pParse, Expr *pVar, Expr *pExpr){
int res = 0;
- int iVar = pVar->iColumn;
- Expr *p = pExpr;
-
- while( p->op==TK_UMINUS ) p = p->pLeft;
- if( p->op==TK_NULL || p->op==TK_INTEGER
- || p->op==TK_FLOAT || p->op==TK_STRING
- || p->op==TK_BLOB
- ){
+ int iVar;
+ sqlite3_value *pL, *pR = 0;
+
+ sqlite3ValueFromExpr(pParse->db, pExpr, SQLITE_UTF8, SQLITE_AFF_BLOB, &pR);
+ if( pR ){
+ iVar = pVar->iColumn;
sqlite3VdbeSetVarmask(pParse->pVdbe, iVar);
- sqlite3_value *pL;
pL = sqlite3VdbeGetBoundValue(pParse->pReprepare, iVar, SQLITE_AFF_BLOB);
- if( pL ){
- sqlite3_value *pR = 0;
- sqlite3ValueFromExpr(pParse->db, pExpr, SQLITE_UTF8, SQLITE_AFF_BLOB,&pR);
- assert( pR || pParse->db->mallocFailed );
- if( pR && 0==sqlite3MemCompare(pL, pR, 0) ){
- res = 1;
- }
- sqlite3ValueFree(pR);
- sqlite3ValueFree(pL);
- }else if( p->op==TK_NULL ){
+ if( pL && 0==sqlite3MemCompare(pL, pR, 0) ){
res = 1;
}
+ sqlite3ValueFree(pR);
+ sqlite3ValueFree(pL);
}
return res;
** just might result in some slightly slower code. But returning
** an incorrect 0 or 1 could lead to a malfunction.
**
-** Argument pParse should normally be NULL. If it is not NULL and
-** expression pA contains SQL variable references, then the values
-** currently bound to those variable references may be compared to
-** simple SQL values in pB. See comments above function exprCompareVariable()
-** for details.
+** If pParse is not NULL then TK_VARIABLE terms in pA with bindings in
+** pParse->pReprepare can be matched against literals in pB. The
+** pParse->pVdbe->expmask bitmask is updated for each variable referenced.
+** If pParse is NULL (the normal case) then any TK_VARIABLE term in
+** Argument pParse should normally be NULL. If it is not NULL and pA or
+** pB causes a return value of 2.
*/
int sqlite3ExprCompare(Parse *pParse, Expr *pA, Expr *pB, int iTab){
u32 combinedFlags;
** When comparing TK_COLUMN nodes between pE1 and pE2, if pE2 has
** Expr.iTable<0 then assume a table number given by iTab.
**
+** If pParse is not NULL, then the values of bound variables in pE1 are
+** compared against literal values in pE2 and pParse->pVdbe->expmask is
+** modified to record which bound variables are referenced. If pParse
+** is NULL, then false will be returned if pE1 contains any bound variables.
+**
** When in doubt, return false. Returning true might give a performance
** improvement. Returning false might cause a performance reduction, but
** it will always give the correct answer and is hence always safe.