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Overview
Comment: | Cherrypick the changes for enhancement requests [e090183531fc27474] (use indices on LIKE with no wildcards) and [4711020446da7d93d993] (use nocase index for LIKE even if the column is binary) into the 3.6.23.1 release of the Apple-OSX branch. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | apple-osx-3623 |
Files: | files | file ages | folders |
SHA1: |
220cca50da08c5166afa3d2364fdf7f8 |
User & Date: | drh 2010-08-17 23:13:42.000 |
Original Comment: | Cherrypick the changes for enhancement requests [e090183531fc27474] (use indices on LIKE with no wildcards) and [4711020446da7d93d993] (use nocase index for LIKE even if the column is binary) into the 3.6.23.1 release of the Apple-OSX branch. |
Context
2010-08-24
| ||
01:59 | Cherrypick the incremental_vacuum bug fix ([255f1eefa373153942c67b18b]) into the apple-osx 3.6.23 branch. (check-in: 60f16838cc user: drh tags: apple-osx-3623) | |
2010-08-17
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23:13 | Cherrypick the changes for enhancement requests [e090183531fc27474] (use indices on LIKE with no wildcards) and [4711020446da7d93d993] (use nocase index for LIKE even if the column is binary) into the 3.6.23.1 release of the Apple-OSX branch. (check-in: 220cca50da user: drh tags: apple-osx-3623) | |
2010-06-16
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19:48 | Merge in changes up to and including the 3.6.23.1 release. (check-in: 21ca87f691 user: drh tags: apple-osx) | |
Changes
Changes to src/expr.c.
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50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 | int j = pExpr->iColumn; if( j<0 ) return SQLITE_AFF_INTEGER; assert( pExpr->pTab && j<pExpr->pTab->nCol ); return pExpr->pTab->aCol[j].affinity; } return pExpr->affinity; } /* ** Set the collating sequence for expression pExpr to be the collating ** sequence named by pToken. Return a pointer to the revised expression. ** The collating sequence is marked as "explicit" using the EP_ExpCollate ** flag. An explicit collating sequence will override implicit ** collating sequences. */ | > > > > > > > > > > > > | < | | < < < < | 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | int j = pExpr->iColumn; if( j<0 ) return SQLITE_AFF_INTEGER; assert( pExpr->pTab && j<pExpr->pTab->nCol ); return pExpr->pTab->aCol[j].affinity; } return pExpr->affinity; } /* ** Set the explicit collating sequence for an expression to the ** collating sequence supplied in the second argument. */ Expr *sqlite3ExprSetColl(Expr *pExpr, CollSeq *pColl){ if( pExpr && pColl ){ pExpr->pColl = pColl; pExpr->flags |= EP_ExpCollate; } return pExpr; } /* ** Set the collating sequence for expression pExpr to be the collating ** sequence named by pToken. Return a pointer to the revised expression. ** The collating sequence is marked as "explicit" using the EP_ExpCollate ** flag. An explicit collating sequence will override implicit ** collating sequences. */ Expr *sqlite3ExprSetCollByToken(Parse *pParse, Expr *pExpr, Token *pCollName){ char *zColl = 0; /* Dequoted name of collation sequence */ CollSeq *pColl; sqlite3 *db = pParse->db; zColl = sqlite3NameFromToken(db, pCollName); pColl = sqlite3LocateCollSeq(pParse, zColl); sqlite3ExprSetColl(pExpr, pColl); sqlite3DbFree(db, zColl); return pExpr; } /* ** Return the default collation sequence for the expression pExpr. If ** there is no default collation type, return 0. |
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Changes to src/parse.y.
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776 777 778 779 780 781 782 | } expr(A) ::= VARIABLE(X). { spanExpr(&A, pParse, TK_VARIABLE, &X); sqlite3ExprAssignVarNumber(pParse, A.pExpr); spanSet(&A, &X, &X); } expr(A) ::= expr(E) COLLATE ids(C). { | | | 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 | } expr(A) ::= VARIABLE(X). { spanExpr(&A, pParse, TK_VARIABLE, &X); sqlite3ExprAssignVarNumber(pParse, A.pExpr); spanSet(&A, &X, &X); } expr(A) ::= expr(E) COLLATE ids(C). { A.pExpr = sqlite3ExprSetCollByToken(pParse, E.pExpr, &C); A.zStart = E.zStart; A.zEnd = &C.z[C.n]; } %ifndef SQLITE_OMIT_CAST expr(A) ::= CAST(X) LP expr(E) AS typetoken(T) RP(Y). { A.pExpr = sqlite3PExpr(pParse, TK_CAST, E.pExpr, 0, &T); spanSet(&A,&X,&Y); |
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1087 1088 1089 1090 1091 1092 1093 | idxlist_opt(A) ::= . {A = 0;} idxlist_opt(A) ::= LP idxlist(X) RP. {A = X;} idxlist(A) ::= idxlist(X) COMMA nm(Y) collate(C) sortorder(Z). { Expr *p = 0; if( C.n>0 ){ p = sqlite3Expr(pParse->db, TK_COLUMN, 0); | | | | 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 | idxlist_opt(A) ::= . {A = 0;} idxlist_opt(A) ::= LP idxlist(X) RP. {A = X;} idxlist(A) ::= idxlist(X) COMMA nm(Y) collate(C) sortorder(Z). { Expr *p = 0; if( C.n>0 ){ p = sqlite3Expr(pParse->db, TK_COLUMN, 0); sqlite3ExprSetCollByToken(pParse, p, &C); } A = sqlite3ExprListAppend(pParse,X, p); sqlite3ExprListSetName(pParse,A,&Y,1); sqlite3ExprListCheckLength(pParse, A, "index"); if( A ) A->a[A->nExpr-1].sortOrder = (u8)Z; } idxlist(A) ::= nm(Y) collate(C) sortorder(Z). { Expr *p = 0; if( C.n>0 ){ p = sqlite3PExpr(pParse, TK_COLUMN, 0, 0, 0); sqlite3ExprSetCollByToken(pParse, p, &C); } A = sqlite3ExprListAppend(pParse,0, p); sqlite3ExprListSetName(pParse, A, &Y, 1); sqlite3ExprListCheckLength(pParse, A, "index"); if( A ) A->a[A->nExpr-1].sortOrder = (u8)Z; } |
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Changes to src/sqliteInt.h.
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2843 2844 2845 2846 2847 2848 2849 | void *sqlite3HexToBlob(sqlite3*, const char *z, int n); int sqlite3TwoPartName(Parse *, Token *, Token *, Token **); const char *sqlite3ErrStr(int); int sqlite3ReadSchema(Parse *pParse); CollSeq *sqlite3FindCollSeq(sqlite3*,u8 enc, const char*,int); CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char*zName); CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr); | | > | 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 | void *sqlite3HexToBlob(sqlite3*, const char *z, int n); int sqlite3TwoPartName(Parse *, Token *, Token *, Token **); const char *sqlite3ErrStr(int); int sqlite3ReadSchema(Parse *pParse); CollSeq *sqlite3FindCollSeq(sqlite3*,u8 enc, const char*,int); CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char*zName); CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr); Expr *sqlite3ExprSetColl(Expr*, CollSeq*); Expr *sqlite3ExprSetCollByToken(Parse *pParse, Expr*, Token*); int sqlite3CheckCollSeq(Parse *, CollSeq *); int sqlite3CheckObjectName(Parse *, const char *); void sqlite3VdbeSetChanges(sqlite3 *, int); const void *sqlite3ValueText(sqlite3_value*, u8); int sqlite3ValueBytes(sqlite3_value*, u8); void sqlite3ValueSetStr(sqlite3_value*, int, const void *,u8, |
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Changes to src/where.c.
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629 630 631 632 633 634 635 | ){ const char *z = 0; /* String on RHS of LIKE operator */ Expr *pRight, *pLeft; /* Right and left size of LIKE operator */ ExprList *pList; /* List of operands to the LIKE operator */ int c; /* One character in z[] */ int cnt; /* Number of non-wildcard prefix characters */ char wc[3]; /* Wildcard characters */ | < < < < < < < < < < < < < < | 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 | ){ const char *z = 0; /* String on RHS of LIKE operator */ Expr *pRight, *pLeft; /* Right and left size of LIKE operator */ ExprList *pList; /* List of operands to the LIKE operator */ int c; /* One character in z[] */ int cnt; /* Number of non-wildcard prefix characters */ char wc[3]; /* Wildcard characters */ sqlite3 *db = pParse->db; /* Database connection */ sqlite3_value *pVal = 0; int op; /* Opcode of pRight */ if( !sqlite3IsLikeFunction(db, pExpr, pnoCase, wc) ){ return 0; } #ifdef SQLITE_EBCDIC if( *pnoCase ) return 0; #endif pList = pExpr->x.pList; pLeft = pList->a[1].pExpr; if( pLeft->op!=TK_COLUMN || sqlite3ExprAffinity(pLeft)!=SQLITE_AFF_TEXT ){ /* IMP: R-02065-49465 The left-hand side of the LIKE or GLOB operator must ** be the name of an indexed column with TEXT affinity. */ return 0; } assert( pLeft->iColumn!=(-1) ); /* Because IPK never has AFF_TEXT */ pRight = pList->a[0].pExpr; op = pRight->op; if( op==TK_REGISTER ){ op = pRight->op2; } if( op==TK_VARIABLE ){ |
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683 684 685 686 687 688 689 | z = pRight->u.zToken; } if( z ){ cnt = 0; while( (c=z[cnt])!=0 && c!=wc[0] && c!=wc[1] && c!=wc[2] ){ cnt++; } | | | | 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 | z = pRight->u.zToken; } if( z ){ cnt = 0; while( (c=z[cnt])!=0 && c!=wc[0] && c!=wc[1] && c!=wc[2] ){ cnt++; } if( cnt!=0 && 255!=(u8)z[cnt-1] ){ Expr *pPrefix; *pisComplete = c==wc[0] && z[cnt+1]==0; pPrefix = sqlite3Expr(db, TK_STRING, z); if( pPrefix ) pPrefix->u.zToken[cnt] = 0; *ppPrefix = pPrefix; if( op==TK_VARIABLE ){ Vdbe *v = pParse->pVdbe; sqlite3VdbeSetVarmask(v, pRight->iColumn); if( *pisComplete && pRight->u.zToken[1] ){ |
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1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 | ){ Expr *pLeft; /* LHS of LIKE/GLOB operator */ Expr *pStr2; /* Copy of pStr1 - RHS of LIKE/GLOB operator */ Expr *pNewExpr1; Expr *pNewExpr2; int idxNew1; int idxNew2; pLeft = pExpr->x.pList->a[1].pExpr; pStr2 = sqlite3ExprDup(db, pStr1, 0); if( !db->mallocFailed ){ u8 c, *pC; /* Last character before the first wildcard */ pC = (u8*)&pStr2->u.zToken[sqlite3Strlen30(pStr2->u.zToken)-1]; c = *pC; if( noCase ){ /* The point is to increment the last character before the first ** wildcard. But if we increment '@', that will push it into the ** alphabetic range where case conversions will mess up the ** inequality. To avoid this, make sure to also run the full ** LIKE on all candidate expressions by clearing the isComplete flag */ if( c=='A'-1 ) isComplete = 0; c = sqlite3UpperToLower[c]; } *pC = c + 1; } | > > | > > | > > | 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 | ){ Expr *pLeft; /* LHS of LIKE/GLOB operator */ Expr *pStr2; /* Copy of pStr1 - RHS of LIKE/GLOB operator */ Expr *pNewExpr1; Expr *pNewExpr2; int idxNew1; int idxNew2; CollSeq *pColl; /* Collating sequence to use */ pLeft = pExpr->x.pList->a[1].pExpr; pStr2 = sqlite3ExprDup(db, pStr1, 0); if( !db->mallocFailed ){ u8 c, *pC; /* Last character before the first wildcard */ pC = (u8*)&pStr2->u.zToken[sqlite3Strlen30(pStr2->u.zToken)-1]; c = *pC; if( noCase ){ /* The point is to increment the last character before the first ** wildcard. But if we increment '@', that will push it into the ** alphabetic range where case conversions will mess up the ** inequality. To avoid this, make sure to also run the full ** LIKE on all candidate expressions by clearing the isComplete flag */ if( c=='A'-1 ) isComplete = 0; c = sqlite3UpperToLower[c]; } *pC = c + 1; } pColl = sqlite3FindCollSeq(db, SQLITE_UTF8, noCase ? "NOCASE" : "BINARY",0); pNewExpr1 = sqlite3PExpr(pParse, TK_GE, sqlite3ExprSetColl(sqlite3ExprDup(db,pLeft,0), pColl), pStr1, 0); idxNew1 = whereClauseInsert(pWC, pNewExpr1, TERM_VIRTUAL|TERM_DYNAMIC); testcase( idxNew1==0 ); exprAnalyze(pSrc, pWC, idxNew1); pNewExpr2 = sqlite3PExpr(pParse, TK_LT, sqlite3ExprSetColl(sqlite3ExprDup(db,pLeft,0), pColl), pStr2, 0); idxNew2 = whereClauseInsert(pWC, pNewExpr2, TERM_VIRTUAL|TERM_DYNAMIC); testcase( idxNew2==0 ); exprAnalyze(pSrc, pWC, idxNew2); pTerm = &pWC->a[idxTerm]; if( isComplete ){ pWC->a[idxNew1].iParent = idxTerm; pWC->a[idxNew2].iParent = idxTerm; |
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Changes to test/analyze3.test.
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264 265 266 267 268 269 270 271 272 273 274 275 276 277 | set like "a%" sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE $like } } {101 0 100} do_test analyze3-2.5 { set like "%a" sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE $like } } {999 999 100} #------------------------------------------------------------------------- # This block of tests checks that statements are correctly marked as # expired when the values bound to any parameters that may affect the # query plan are modified. # | > > > > > > > > > > > > > > > > | 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 | set like "a%" sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE $like } } {101 0 100} do_test analyze3-2.5 { set like "%a" sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE $like } } {999 999 100} do_test analyze3-2.6 { set like "a" sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE $like } } {101 0 0} do_test analyze3-2.7 { set like "ab" sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE $like } } {11 0 0} do_test analyze3-2.8 { set like "abc" sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE $like } } {2 0 1} do_test analyze3-2.9 { set like "a_c" sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE $like } } {101 0 10} #------------------------------------------------------------------------- # This block of tests checks that statements are correctly marked as # expired when the values bound to any parameters that may affect the # query plan are modified. # |
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Changes to test/like.test.
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189 190 191 192 193 194 195 196 197 198 199 200 201 202 | queryplan { SELECT x FROM t1 WHERE x LIKE 'abc%' ORDER BY 1; } } {abc abcd nosort {} i1} do_test like-3.4 { set sqlite_like_count } 0 # Partial optimization when the pattern does not end in '%' # do_test like-3.5 { set sqlite_like_count 0 queryplan { SELECT x FROM t1 WHERE x LIKE 'a_c' ORDER BY 1; | > > > > > > > > > > > > > > > > > > > > > > > > > | 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 | queryplan { SELECT x FROM t1 WHERE x LIKE 'abc%' ORDER BY 1; } } {abc abcd nosort {} i1} do_test like-3.4 { set sqlite_like_count } 0 # The LIKE optimization still works when the RHS is a string with no # wildcard. Ticket [e090183531fc2747] # do_test like-3.4.2 { queryplan { SELECT x FROM t1 WHERE x LIKE 'a' ORDER BY 1; } } {a nosort {} i1} do_test like-3.4.3 { queryplan { SELECT x FROM t1 WHERE x LIKE 'ab' ORDER BY 1; } } {ab nosort {} i1} do_test like-3.4.4 { queryplan { SELECT x FROM t1 WHERE x LIKE 'abcd' ORDER BY 1; } } {abcd nosort {} i1} do_test like-3.4.5 { queryplan { SELECT x FROM t1 WHERE x LIKE 'abcde' ORDER BY 1; } } {nosort {} i1} # Partial optimization when the pattern does not end in '%' # do_test like-3.5 { set sqlite_like_count 0 queryplan { SELECT x FROM t1 WHERE x LIKE 'a_c' ORDER BY 1; |
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304 305 306 307 308 309 310 311 312 313 314 315 316 317 | PRAGMA case_sensitive_like=off; SELECT x FROM t1 WHERE x GLOB 'a[bc]d' ORDER BY 1; } } {abd acd nosort {} i1} do_test like-3.24 { set sqlite_like_count } 6 # No optimization if the LHS of the LIKE is not a column name or # if the RHS is not a string. # do_test like-4.1 { execsql {PRAGMA case_sensitive_like=on} set sqlite_like_count 0 | > > > > > > > > > > > > > > > > > > > > | 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 | PRAGMA case_sensitive_like=off; SELECT x FROM t1 WHERE x GLOB 'a[bc]d' ORDER BY 1; } } {abd acd nosort {} i1} do_test like-3.24 { set sqlite_like_count } 6 # GLOB optimization when there is no wildcard. Ticket [e090183531fc2747] # do_test like-3.25 { queryplan { SELECT x FROM t1 WHERE x GLOB 'a' ORDER BY 1; } } {a nosort {} i1} do_test like-3.26 { queryplan { SELECT x FROM t1 WHERE x GLOB 'abcd' ORDER BY 1; } } {abcd nosort {} i1} do_test like-3.27 { queryplan { SELECT x FROM t1 WHERE x GLOB 'abcde' ORDER BY 1; } } {nosort {} i1} # No optimization if the LHS of the LIKE is not a column name or # if the RHS is not a string. # do_test like-4.1 { execsql {PRAGMA case_sensitive_like=on} set sqlite_like_count 0 |
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728 729 730 731 732 733 734 735 | } } {12 123 scan 3 like 0} do_test like-10.15 { count { SELECT a FROM t10b WHERE a GLOB '12*' ORDER BY a; } } {12 123 scan 5 like 6} | > > | > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 | } } {12 123 scan 3 like 0} do_test like-10.15 { count { SELECT a FROM t10b WHERE a GLOB '12*' ORDER BY a; } } {12 123 scan 5 like 6} # LIKE and GLOB where the default collating sequence is not appropriate # but an index with the appropriate collating sequence exists. # do_test like-11.0 { execsql { CREATE TABLE t11( a INTEGER PRIMARY KEY, b TEXT COLLATE nocase, c TEXT COLLATE binary ); INSERT INTO t11 VALUES(1, 'a','a'); INSERT INTO t11 VALUES(2, 'ab','ab'); INSERT INTO t11 VALUES(3, 'abc','abc'); INSERT INTO t11 VALUES(4, 'abcd','abcd'); INSERT INTO t11 VALUES(5, 'A','A'); INSERT INTO t11 VALUES(6, 'AB','AB'); INSERT INTO t11 VALUES(7, 'ABC','ABC'); INSERT INTO t11 VALUES(8, 'ABCD','ABCD'); INSERT INTO t11 VALUES(9, 'x','x'); INSERT INTO t11 VALUES(10, 'yz','yz'); INSERT INTO t11 VALUES(11, 'X','X'); INSERT INTO t11 VALUES(12, 'YZ','YZ'); SELECT count(*) FROM t11; } } {12} do_test like-11.1 { queryplan { PRAGMA case_sensitive_like=OFF; SELECT b FROM t11 WHERE b LIKE 'abc%' ORDER BY a; } } {abc abcd ABC ABCD nosort t11 *} do_test like-11.2 { queryplan { PRAGMA case_sensitive_like=ON; SELECT b FROM t11 WHERE b LIKE 'abc%' ORDER BY a; } } {abc abcd nosort t11 *} do_test like-11.3 { queryplan { PRAGMA case_sensitive_like=OFF; CREATE INDEX t11b ON t11(b); SELECT b FROM t11 WHERE b LIKE 'abc%' ORDER BY a; } } {abc abcd ABC ABCD sort {} t11b} do_test like-11.4 { queryplan { PRAGMA case_sensitive_like=ON; SELECT b FROM t11 WHERE b LIKE 'abc%' ORDER BY a; } } {abc abcd nosort t11 *} do_test like-11.5 { queryplan { PRAGMA case_sensitive_like=OFF; DROP INDEX t11b; CREATE INDEX t11bnc ON t11(b COLLATE nocase); SELECT b FROM t11 WHERE b LIKE 'abc%' ORDER BY a; } } {abc abcd ABC ABCD sort {} t11bnc} do_test like-11.6 { queryplan { CREATE INDEX t11bb ON t11(b COLLATE binary); SELECT b FROM t11 WHERE b LIKE 'abc%' ORDER BY a; } } {abc abcd ABC ABCD sort {} t11bnc} do_test like-11.7 { queryplan { PRAGMA case_sensitive_like=ON; SELECT b FROM t11 WHERE b LIKE 'abc%' ORDER BY a; } } {abc abcd sort {} t11bb} do_test like-11.8 { queryplan { PRAGMA case_sensitive_like=OFF; SELECT b FROM t11 WHERE b GLOB 'abc*' ORDER BY a; } } {abc abcd sort {} t11bb} do_test like-11.9 { queryplan { CREATE INDEX t11cnc ON t11(c COLLATE nocase); CREATE INDEX t11cb ON t11(c COLLATE binary); SELECT c FROM t11 WHERE c LIKE 'abc%' ORDER BY a; } } {abc abcd ABC ABCD sort {} t11cnc} do_test like-11.10 { queryplan { SELECT c FROM t11 WHERE c GLOB 'abc*' ORDER BY a; } } {abc abcd sort {} t11cb} finish_test |