Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
| Comment: | Fix a problem with min() and descending indexes. (CVS 4933) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
39705b617a775d4299e98ac88fab4525 |
| User & Date: | danielk1977 2008-03-28 19:16:57 |
|
2008-03-29
| ||
| 11:00 | Add the --pause option to the main test driver. (CVS 4934) (check-in: 37dfcdf5 user: drh tags: trunk) | |
|
2008-03-28
| ||
| 19:16 | Fix a problem with min() and descending indexes. (CVS 4933) (check-in: 39705b61 user: danielk1977 tags: trunk) | |
| 19:16 | Fix a memory leak that can occur when the library API is misused. (CVS 4932) (check-in: 2b6d3e01 user: danielk1977 tags: trunk) | |
Changes to src/where.c.
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
....
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
|
** This module contains C code that generates VDBE code used to process ** the WHERE clause of SQL statements. This module is reponsible for ** generating the code that loops through a table looking for applicable ** rows. Indices are selected and used to speed the search when doing ** so is applicable. Because this module is responsible for selecting ** indices, you might also think of this module as the "query optimizer". ** ** $Id: where.c,v 1.293 2008/03/28 18:11:17 danielk1977 Exp $ */ #include "sqliteInt.h" /* ** The number of bits in a Bitmask. "BMS" means "BitMask Size". */ #define BMS (sizeof(Bitmask)*8) ................................................................................ btmEq = pTerm->eOperator & (WO_LE|WO_GE); disableTerm(pLevel, pTerm); }else{ btmEq = 1; } if( nEq>0 || btmLimit || (isMinQuery&&!bRev) ){ int nCol = nEq + btmLimit; if( isMinQuery && !btmLimit ){ sqlite3VdbeAddOp2(v, OP_Null, 0, regBase+nCol); nCol++; btmEq = 0; } if( bRev ){ r1 = pLevel->iMem; testOp = OP_IdxLT; |
|
|
|
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
....
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
|
** This module contains C code that generates VDBE code used to process ** the WHERE clause of SQL statements. This module is reponsible for ** generating the code that loops through a table looking for applicable ** rows. Indices are selected and used to speed the search when doing ** so is applicable. Because this module is responsible for selecting ** indices, you might also think of this module as the "query optimizer". ** ** $Id: where.c,v 1.294 2008/03/28 19:16:57 danielk1977 Exp $ */ #include "sqliteInt.h" /* ** The number of bits in a Bitmask. "BMS" means "BitMask Size". */ #define BMS (sizeof(Bitmask)*8) ................................................................................ btmEq = pTerm->eOperator & (WO_LE|WO_GE); disableTerm(pLevel, pTerm); }else{ btmEq = 1; } if( nEq>0 || btmLimit || (isMinQuery&&!bRev) ){ int nCol = nEq + btmLimit; if( isMinQuery && !bRev && !btmLimit ){ sqlite3VdbeAddOp2(v, OP_Null, 0, regBase+nCol); nCol++; btmEq = 0; } if( bRev ){ r1 = pLevel->iMem; testOp = OP_IdxLT; |
Changes to test/minmax3.test.
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
...
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
# a legal notice, here is a blessing: # # May you do good and not evil. # May you find forgiveness for yourself and forgive others. # May you share freely, never taking more than you give. # #*********************************************************************** # $Id: minmax3.test,v 1.3 2008/03/28 18:11:17 danielk1977 Exp $ set testdir [file dirname $argv0] source $testdir/tester.tcl # Do an SQL statement. Append the search count to the end of the result. # proc count sql { ................................................................................ do_test minmax3-2.1 { execsql { CREATE TABLE t2(a, b); CREATE INDEX i3 ON t2(a, b); INSERT INTO t2 VALUES(1, NULL); INSERT INTO t2 VALUES(1, 1); INSERT INTO t2 VALUES(1, 2); INSERT INTO t2 VALUES(1, 3); INSERT INTO t2 VALUES(2, NULL); INSERT INTO t2 VALUES(2, 1); INSERT INTO t2 VALUES(2, 2); INSERT INTO t2 VALUES(2, 3); INSERT INTO t2 VALUES(3, 1); |
|
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
|
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
...
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
# a legal notice, here is a blessing: # # May you do good and not evil. # May you find forgiveness for yourself and forgive others. # May you share freely, never taking more than you give. # #*********************************************************************** # $Id: minmax3.test,v 1.4 2008/03/28 19:16:57 danielk1977 Exp $ set testdir [file dirname $argv0] source $testdir/tester.tcl # Do an SQL statement. Append the search count to the end of the result. # proc count sql { ................................................................................ do_test minmax3-2.1 { execsql { CREATE TABLE t2(a, b); CREATE INDEX i3 ON t2(a, b); INSERT INTO t2 VALUES(1, NULL); INSERT INTO t2 VALUES(1, 1); INSERT INTO t2 VALUES(1, 2); INSERT INTO t2 VALUES(1, 3); INSERT INTO t2 VALUES(2, NULL); INSERT INTO t2 VALUES(2, 1); INSERT INTO t2 VALUES(2, 2); INSERT INTO t2 VALUES(2, 3); INSERT INTO t2 VALUES(3, 1); INSERT INTO t2 VALUES(3, 2); INSERT INTO t2 VALUES(3, 3); } } {} do_test minmax3-2.2 { execsql { SELECT min(b) FROM t2 WHERE a = 1; } } {1} do_test minmax3-2.3 { execsql { SELECT min(b) FROM t2 WHERE a = 1 AND b>1; } } {2} do_test minmax3-2.4 { execsql { SELECT min(b) FROM t2 WHERE a = 1 AND b>-1; } } {1} do_test minmax3-2.5 { execsql { SELECT min(b) FROM t2 WHERE a = 1; } } {1} do_test minmax3-2.6 { execsql { SELECT min(b) FROM t2 WHERE a = 1 AND b<2; } } {1} do_test minmax3-2.7 { execsql { SELECT min(b) FROM t2 WHERE a = 1 AND b<1; } } {{}} do_test minmax3-2.8 { execsql { SELECT min(b) FROM t2 WHERE a = 3 AND b<1; } } {{}} do_test minmax3-2.1 { execsql { DROP TABLE t2; CREATE TABLE t2(a, b); CREATE INDEX i3 ON t2(a, b DESC); INSERT INTO t2 VALUES(1, NULL); INSERT INTO t2 VALUES(1, 1); INSERT INTO t2 VALUES(1, 2); INSERT INTO t2 VALUES(1, 3); INSERT INTO t2 VALUES(2, NULL); INSERT INTO t2 VALUES(2, 1); INSERT INTO t2 VALUES(2, 2); INSERT INTO t2 VALUES(2, 3); INSERT INTO t2 VALUES(3, 1); |