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| 1 # 2001 September 15 | |
| 2 # | |
| 3 # The author disclaims copyright to this source code. In place of | |
| 4 # a legal notice, here is a blessing: | |
| 5 # | |
| 6 # May you do good and not evil. | |
| 7 # May you find forgiveness for yourself and forgive others. | |
| 8 # May you share freely, never taking more than you give. | |
| 9 # | |
| 10 #*********************************************************************** | |
| 11 # This file implements regression tests for SQLite library. The | |
| 12 # focus of this file is testing the DELETE FROM statement. | |
| 13 # | |
| 14 # $Id: delete.test,v 1.26 2009/06/05 17:09:12 drh Exp $ | |
| 15 | |
| 16 set testdir [file dirname $argv0] | |
| 17 source $testdir/tester.tcl | |
| 18 | |
| 19 # Try to delete from a non-existant table. | |
| 20 # | |
| 21 do_test delete-1.1 { | |
| 22 set v [catch {execsql {DELETE FROM test1}} msg] | |
| 23 lappend v $msg | |
| 24 } {1 {no such table: test1}} | |
| 25 | |
| 26 # Try to delete from sqlite_master | |
| 27 # | |
| 28 do_test delete-2.1 { | |
| 29 set v [catch {execsql {DELETE FROM sqlite_master}} msg] | |
| 30 lappend v $msg | |
| 31 } {1 {table sqlite_master may not be modified}} | |
| 32 | |
| 33 # Delete selected entries from a table with and without an index. | |
| 34 # | |
| 35 do_test delete-3.1.1 { | |
| 36 execsql {CREATE TABLE table1(f1 int, f2 int)} | |
| 37 execsql {INSERT INTO table1 VALUES(1,2)} | |
| 38 execsql {INSERT INTO table1 VALUES(2,4)} | |
| 39 execsql {INSERT INTO table1 VALUES(3,8)} | |
| 40 execsql {INSERT INTO table1 VALUES(4,16)} | |
| 41 execsql {SELECT * FROM table1 ORDER BY f1} | |
| 42 } {1 2 2 4 3 8 4 16} | |
| 43 do_test delete-3.1.2 { | |
| 44 execsql {DELETE FROM table1 WHERE f1=3} | |
| 45 } {} | |
| 46 do_test delete-3.1.3 { | |
| 47 execsql {SELECT * FROM table1 ORDER BY f1} | |
| 48 } {1 2 2 4 4 16} | |
| 49 do_test delete-3.1.4 { | |
| 50 execsql {CREATE INDEX index1 ON table1(f1)} | |
| 51 execsql {PRAGMA count_changes=on} | |
| 52 ifcapable explain { | |
| 53 execsql {EXPLAIN DELETE FROM table1 WHERE f1=3} | |
| 54 } | |
| 55 execsql {DELETE FROM 'table1' WHERE f1=3} | |
| 56 } {0} | |
| 57 do_test delete-3.1.5 { | |
| 58 execsql {SELECT * FROM table1 ORDER BY f1} | |
| 59 } {1 2 2 4 4 16} | |
| 60 do_test delete-3.1.6.1 { | |
| 61 execsql {DELETE FROM table1 WHERE f1=2} | |
| 62 } {1} | |
| 63 do_test delete-3.1.6.2 { | |
| 64 db changes | |
| 65 } 1 | |
| 66 do_test delete-3.1.7 { | |
| 67 execsql {SELECT * FROM table1 ORDER BY f1} | |
| 68 } {1 2 4 16} | |
| 69 integrity_check delete-3.2 | |
| 70 | |
| 71 # Semantic errors in the WHERE clause | |
| 72 # | |
| 73 do_test delete-4.1 { | |
| 74 execsql {CREATE TABLE table2(f1 int, f2 int)} | |
| 75 set v [catch {execsql {DELETE FROM table2 WHERE f3=5}} msg] | |
| 76 lappend v $msg | |
| 77 } {1 {no such column: f3}} | |
| 78 | |
| 79 do_test delete-4.2 { | |
| 80 set v [catch {execsql {DELETE FROM table2 WHERE xyzzy(f1+4)}} msg] | |
| 81 lappend v $msg | |
| 82 } {1 {no such function: xyzzy}} | |
| 83 integrity_check delete-4.3 | |
| 84 | |
| 85 # Lots of deletes | |
| 86 # | |
| 87 do_test delete-5.1.1 { | |
| 88 execsql {DELETE FROM table1} | |
| 89 } {2} | |
| 90 do_test delete-5.1.2 { | |
| 91 execsql {SELECT count(*) FROM table1} | |
| 92 } {0} | |
| 93 do_test delete-5.2.1 { | |
| 94 execsql {BEGIN TRANSACTION} | |
| 95 for {set i 1} {$i<=200} {incr i} { | |
| 96 execsql "INSERT INTO table1 VALUES($i,[expr {$i*$i}])" | |
| 97 } | |
| 98 execsql {COMMIT} | |
| 99 execsql {SELECT count(*) FROM table1} | |
| 100 } {200} | |
| 101 do_test delete-5.2.2 { | |
| 102 execsql {DELETE FROM table1} | |
| 103 } {200} | |
| 104 do_test delete-5.2.3 { | |
| 105 execsql {BEGIN TRANSACTION} | |
| 106 for {set i 1} {$i<=200} {incr i} { | |
| 107 execsql "INSERT INTO table1 VALUES($i,[expr {$i*$i}])" | |
| 108 } | |
| 109 execsql {COMMIT} | |
| 110 execsql {SELECT count(*) FROM table1} | |
| 111 } {200} | |
| 112 do_test delete-5.2.4 { | |
| 113 execsql {PRAGMA count_changes=off} | |
| 114 execsql {DELETE FROM table1} | |
| 115 } {} | |
| 116 do_test delete-5.2.5 { | |
| 117 execsql {SELECT count(*) FROM table1} | |
| 118 } {0} | |
| 119 do_test delete-5.2.6 { | |
| 120 execsql {BEGIN TRANSACTION} | |
| 121 for {set i 1} {$i<=200} {incr i} { | |
| 122 execsql "INSERT INTO table1 VALUES($i,[expr {$i*$i}])" | |
| 123 } | |
| 124 execsql {COMMIT} | |
| 125 execsql {SELECT count(*) FROM table1} | |
| 126 } {200} | |
| 127 do_test delete-5.3 { | |
| 128 for {set i 1} {$i<=200} {incr i 4} { | |
| 129 execsql "DELETE FROM table1 WHERE f1==$i" | |
| 130 } | |
| 131 execsql {SELECT count(*) FROM table1} | |
| 132 } {150} | |
| 133 do_test delete-5.4.1 { | |
| 134 execsql "DELETE FROM table1 WHERE f1>50" | |
| 135 db changes | |
| 136 } [db one {SELECT count(*) FROM table1 WHERE f1>50}] | |
| 137 do_test delete-5.4.2 { | |
| 138 execsql {SELECT count(*) FROM table1} | |
| 139 } {37} | |
| 140 do_test delete-5.5 { | |
| 141 for {set i 1} {$i<=70} {incr i 3} { | |
| 142 execsql "DELETE FROM table1 WHERE f1==$i" | |
| 143 } | |
| 144 execsql {SELECT f1 FROM table1 ORDER BY f1} | |
| 145 } {2 3 6 8 11 12 14 15 18 20 23 24 26 27 30 32 35 36 38 39 42 44 47 48 50} | |
| 146 do_test delete-5.6 { | |
| 147 for {set i 1} {$i<40} {incr i} { | |
| 148 execsql "DELETE FROM table1 WHERE f1==$i" | |
| 149 } | |
| 150 execsql {SELECT f1 FROM table1 ORDER BY f1} | |
| 151 } {42 44 47 48 50} | |
| 152 do_test delete-5.7 { | |
| 153 execsql "DELETE FROM table1 WHERE f1!=48" | |
| 154 execsql {SELECT f1 FROM table1 ORDER BY f1} | |
| 155 } {48} | |
| 156 integrity_check delete-5.8 | |
| 157 | |
| 158 | |
| 159 # Delete large quantities of data. We want to test the List overflow | |
| 160 # mechanism in the vdbe. | |
| 161 # | |
| 162 do_test delete-6.1 { | |
| 163 execsql {BEGIN; DELETE FROM table1} | |
| 164 for {set i 1} {$i<=3000} {incr i} { | |
| 165 execsql "INSERT INTO table1 VALUES($i,[expr {$i*$i}])" | |
| 166 } | |
| 167 execsql {DELETE FROM table2} | |
| 168 for {set i 1} {$i<=3000} {incr i} { | |
| 169 execsql "INSERT INTO table2 VALUES($i,[expr {$i*$i}])" | |
| 170 } | |
| 171 execsql {COMMIT} | |
| 172 execsql {SELECT count(*) FROM table1} | |
| 173 } {3000} | |
| 174 do_test delete-6.2 { | |
| 175 execsql {SELECT count(*) FROM table2} | |
| 176 } {3000} | |
| 177 do_test delete-6.3 { | |
| 178 execsql {SELECT f1 FROM table1 WHERE f1<10 ORDER BY f1} | |
| 179 } {1 2 3 4 5 6 7 8 9} | |
| 180 do_test delete-6.4 { | |
| 181 execsql {SELECT f1 FROM table2 WHERE f1<10 ORDER BY f1} | |
| 182 } {1 2 3 4 5 6 7 8 9} | |
| 183 do_test delete-6.5.1 { | |
| 184 execsql {DELETE FROM table1 WHERE f1>7} | |
| 185 db changes | |
| 186 } {2993} | |
| 187 do_test delete-6.5.2 { | |
| 188 execsql {SELECT f1 FROM table1 ORDER BY f1} | |
| 189 } {1 2 3 4 5 6 7} | |
| 190 do_test delete-6.6 { | |
| 191 execsql {DELETE FROM table2 WHERE f1>7} | |
| 192 execsql {SELECT f1 FROM table2 ORDER BY f1} | |
| 193 } {1 2 3 4 5 6 7} | |
| 194 do_test delete-6.7 { | |
| 195 execsql {DELETE FROM table1} | |
| 196 execsql {SELECT f1 FROM table1} | |
| 197 } {} | |
| 198 do_test delete-6.8 { | |
| 199 execsql {INSERT INTO table1 VALUES(2,3)} | |
| 200 execsql {SELECT f1 FROM table1} | |
| 201 } {2} | |
| 202 do_test delete-6.9 { | |
| 203 execsql {DELETE FROM table2} | |
| 204 execsql {SELECT f1 FROM table2} | |
| 205 } {} | |
| 206 do_test delete-6.10 { | |
| 207 execsql {INSERT INTO table2 VALUES(2,3)} | |
| 208 execsql {SELECT f1 FROM table2} | |
| 209 } {2} | |
| 210 integrity_check delete-6.11 | |
| 211 | |
| 212 do_test delete-7.1 { | |
| 213 execsql { | |
| 214 CREATE TABLE t3(a); | |
| 215 INSERT INTO t3 VALUES(1); | |
| 216 INSERT INTO t3 SELECT a+1 FROM t3; | |
| 217 INSERT INTO t3 SELECT a+2 FROM t3; | |
| 218 SELECT * FROM t3; | |
| 219 } | |
| 220 } {1 2 3 4} | |
| 221 ifcapable {trigger} { | |
| 222 do_test delete-7.2 { | |
| 223 execsql { | |
| 224 CREATE TABLE cnt(del); | |
| 225 INSERT INTO cnt VALUES(0); | |
| 226 CREATE TRIGGER r1 AFTER DELETE ON t3 FOR EACH ROW BEGIN | |
| 227 UPDATE cnt SET del=del+1; | |
| 228 END; | |
| 229 DELETE FROM t3 WHERE a<2; | |
| 230 SELECT * FROM t3; | |
| 231 } | |
| 232 } {2 3 4} | |
| 233 do_test delete-7.3 { | |
| 234 execsql { | |
| 235 SELECT * FROM cnt; | |
| 236 } | |
| 237 } {1} | |
| 238 do_test delete-7.4 { | |
| 239 execsql { | |
| 240 DELETE FROM t3; | |
| 241 SELECT * FROM t3; | |
| 242 } | |
| 243 } {} | |
| 244 do_test delete-7.5 { | |
| 245 execsql { | |
| 246 SELECT * FROM cnt; | |
| 247 } | |
| 248 } {4} | |
| 249 do_test delete-7.6 { | |
| 250 execsql { | |
| 251 INSERT INTO t3 VALUES(1); | |
| 252 INSERT INTO t3 SELECT a+1 FROM t3; | |
| 253 INSERT INTO t3 SELECT a+2 FROM t3; | |
| 254 CREATE TABLE t4 AS SELECT * FROM t3; | |
| 255 PRAGMA count_changes=ON; | |
| 256 DELETE FROM t3; | |
| 257 DELETE FROM t4; | |
| 258 } | |
| 259 } {4 4} | |
| 260 } ;# endif trigger | |
| 261 ifcapable {!trigger} { | |
| 262 execsql {DELETE FROM t3} | |
| 263 } | |
| 264 integrity_check delete-7.7 | |
| 265 | |
| 266 # Make sure error messages are consistent when attempting to delete | |
| 267 # from a read-only database. Ticket #304. | |
| 268 # | |
| 269 do_test delete-8.0 { | |
| 270 execsql { | |
| 271 PRAGMA count_changes=OFF; | |
| 272 INSERT INTO t3 VALUES(123); | |
| 273 SELECT * FROM t3; | |
| 274 } | |
| 275 } {123} | |
| 276 db close | |
| 277 catch {forcedelete test.db-journal} | |
| 278 catch {file attributes test.db -permissions 0444} | |
| 279 catch {file attributes test.db -readonly 1} | |
| 280 sqlite3 db test.db | |
| 281 set ::DB [sqlite3_connection_pointer db] | |
| 282 do_test delete-8.1 { | |
| 283 catchsql { | |
| 284 DELETE FROM t3; | |
| 285 } | |
| 286 } {1 {attempt to write a readonly database}} | |
| 287 do_test delete-8.2 { | |
| 288 execsql {SELECT * FROM t3} | |
| 289 } {123} | |
| 290 do_test delete-8.3 { | |
| 291 catchsql { | |
| 292 DELETE FROM t3 WHERE 1; | |
| 293 } | |
| 294 } {1 {attempt to write a readonly database}} | |
| 295 do_test delete-8.4 { | |
| 296 execsql {SELECT * FROM t3} | |
| 297 } {123} | |
| 298 | |
| 299 # Update for v3: In v2 the DELETE statement would succeed because no | |
| 300 # database writes actually occur. Version 3 refuses to open a transaction | |
| 301 # on a read-only file, so the statement fails. | |
| 302 do_test delete-8.5 { | |
| 303 catchsql { | |
| 304 DELETE FROM t3 WHERE a<100; | |
| 305 } | |
| 306 # v2 result: {0 {}} | |
| 307 } {1 {attempt to write a readonly database}} | |
| 308 do_test delete-8.6 { | |
| 309 execsql {SELECT * FROM t3} | |
| 310 } {123} | |
| 311 integrity_check delete-8.7 | |
| 312 | |
| 313 # Need to do the following for tcl 8.5 on mac. On that configuration, the | |
| 314 # -readonly flag is taken so seriously that a subsequent [forcedelete] | |
| 315 # (required before the next test file can be executed) will fail. | |
| 316 # | |
| 317 catch {file attributes test.db -readonly 0} | |
| 318 db close | |
| 319 forcedelete test.db test.db-journal | |
| 320 | |
| 321 # The following tests verify that SQLite correctly handles the case | |
| 322 # where an index B-Tree is being scanned, the rowid column being read | |
| 323 # from each index entry and another statement deletes some rows from | |
| 324 # the index B-Tree. At one point this (obscure) scenario was causing | |
| 325 # SQLite to return spurious SQLITE_CORRUPT errors and arguably incorrect | |
| 326 # query results. | |
| 327 # | |
| 328 do_test delete-9.1 { | |
| 329 sqlite3 db test.db | |
| 330 execsql { | |
| 331 CREATE TABLE t5(a, b); | |
| 332 CREATE TABLE t6(c, d); | |
| 333 INSERT INTO t5 VALUES(1, 2); | |
| 334 INSERT INTO t5 VALUES(3, 4); | |
| 335 INSERT INTO t5 VALUES(5, 6); | |
| 336 INSERT INTO t6 VALUES('a', 'b'); | |
| 337 INSERT INTO t6 VALUES('c', 'd'); | |
| 338 CREATE INDEX i5 ON t5(a); | |
| 339 CREATE INDEX i6 ON t6(c); | |
| 340 } | |
| 341 } {} | |
| 342 do_test delete-9.2 { | |
| 343 set res [list] | |
| 344 db eval { SELECT t5.rowid AS r, c, d FROM t5, t6 ORDER BY a } { | |
| 345 if {$r==2} { db eval { DELETE FROM t5 } } | |
| 346 lappend res $r $c $d | |
| 347 } | |
| 348 set res | |
| 349 } {1 a b 1 c d 2 a b {} c d} | |
| 350 do_test delete-9.3 { | |
| 351 execsql { | |
| 352 INSERT INTO t5 VALUES(1, 2); | |
| 353 INSERT INTO t5 VALUES(3, 4); | |
| 354 INSERT INTO t5 VALUES(5, 6); | |
| 355 } | |
| 356 set res [list] | |
| 357 db eval { SELECT t5.rowid AS r, c, d FROM t5, t6 ORDER BY a } { | |
| 358 if {$r==2} { db eval { DELETE FROM t5 WHERE rowid = 2 } } | |
| 359 lappend res $r $c $d | |
| 360 } | |
| 361 set res | |
| 362 } {1 a b 1 c d 2 a b {} c d 3 a b 3 c d} | |
| 363 do_test delete-9.4 { | |
| 364 execsql { | |
| 365 DELETE FROM t5; | |
| 366 INSERT INTO t5 VALUES(1, 2); | |
| 367 INSERT INTO t5 VALUES(3, 4); | |
| 368 INSERT INTO t5 VALUES(5, 6); | |
| 369 } | |
| 370 set res [list] | |
| 371 db eval { SELECT t5.rowid AS r, c, d FROM t5, t6 ORDER BY a } { | |
| 372 if {$r==2} { db eval { DELETE FROM t5 WHERE rowid = 1 } } | |
| 373 lappend res $r $c $d | |
| 374 } | |
| 375 set res | |
| 376 } {1 a b 1 c d 2 a b 2 c d 3 a b 3 c d} | |
| 377 do_test delete-9.5 { | |
| 378 execsql { | |
| 379 DELETE FROM t5; | |
| 380 INSERT INTO t5 VALUES(1, 2); | |
| 381 INSERT INTO t5 VALUES(3, 4); | |
| 382 INSERT INTO t5 VALUES(5, 6); | |
| 383 } | |
| 384 set res [list] | |
| 385 db eval { SELECT t5.rowid AS r, c, d FROM t5, t6 ORDER BY a } { | |
| 386 if {$r==2} { db eval { DELETE FROM t5 WHERE rowid = 3 } } | |
| 387 lappend res $r $c $d | |
| 388 } | |
| 389 set res | |
| 390 } {1 a b 1 c d 2 a b 2 c d} | |
| 391 | |
| 392 | |
| 393 finish_test | |
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