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| 1 # 2012 Sept 27 | |
| 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 that the optimizations that disable | |
| 13 # ORDER BY clauses when the natural order of a query is correct. | |
| 14 # | |
| 15 | |
| 16 | |
| 17 set testdir [file dirname $argv0] | |
| 18 source $testdir/tester.tcl | |
| 19 set ::testprefix orderby1 | |
| 20 | |
| 21 # Generate test data for a join. Verify that the join gets the | |
| 22 # correct answer. | |
| 23 # | |
| 24 do_test 1.0 { | |
| 25 db eval { | |
| 26 BEGIN; | |
| 27 CREATE TABLE album( | |
| 28 aid INTEGER PRIMARY KEY, | |
| 29 title TEXT UNIQUE NOT NULL | |
| 30 ); | |
| 31 CREATE TABLE track( | |
| 32 tid INTEGER PRIMARY KEY, | |
| 33 aid INTEGER NOT NULL REFERENCES album, | |
| 34 tn INTEGER NOT NULL, | |
| 35 name TEXT, | |
| 36 UNIQUE(aid, tn) | |
| 37 ); | |
| 38 INSERT INTO album VALUES(1, '1-one'), (2, '2-two'), (3, '3-three'); | |
| 39 INSERT INTO track VALUES | |
| 40 (NULL, 1, 1, 'one-a'), | |
| 41 (NULL, 2, 2, 'two-b'), | |
| 42 (NULL, 3, 3, 'three-c'), | |
| 43 (NULL, 1, 3, 'one-c'), | |
| 44 (NULL, 2, 1, 'two-a'), | |
| 45 (NULL, 3, 1, 'three-a'); | |
| 46 COMMIT; | |
| 47 } | |
| 48 } {} | |
| 49 do_test 1.1a { | |
| 50 db eval { | |
| 51 SELECT name FROM album JOIN track USING (aid) ORDER BY title, tn | |
| 52 } | |
| 53 } {one-a one-c two-a two-b three-a three-c} | |
| 54 | |
| 55 # Verify that the ORDER BY clause is optimized out | |
| 56 # | |
| 57 do_test 1.1b { | |
| 58 db eval { | |
| 59 EXPLAIN QUERY PLAN | |
| 60 SELECT name FROM album CROSS JOIN track USING (aid) ORDER BY title, tn | |
| 61 } | |
| 62 } {~/ORDER BY/} ;# ORDER BY optimized out | |
| 63 | |
| 64 # The same query with ORDER BY clause optimization disabled via + operators | |
| 65 # should give exactly the same answer. | |
| 66 # | |
| 67 do_test 1.2a { | |
| 68 db eval { | |
| 69 SELECT name FROM album JOIN track USING (aid) ORDER BY +title, +tn | |
| 70 } | |
| 71 } {one-a one-c two-a two-b three-a three-c} | |
| 72 | |
| 73 # The output is sorted manually in this case. | |
| 74 # | |
| 75 do_test 1.2b { | |
| 76 db eval { | |
| 77 EXPLAIN QUERY PLAN | |
| 78 SELECT name FROM album JOIN track USING (aid) ORDER BY +title, +tn | |
| 79 } | |
| 80 } {/ORDER BY/} ;# separate sorting pass due to "+" on ORDER BY terms | |
| 81 | |
| 82 # The same query with ORDER BY optimizations turned off via built-in test. | |
| 83 # | |
| 84 do_test 1.3a { | |
| 85 optimization_control db order-by-idx-join 0 | |
| 86 db cache flush | |
| 87 db eval { | |
| 88 SELECT name FROM album JOIN track USING (aid) ORDER BY title, tn | |
| 89 } | |
| 90 } {one-a one-c two-a two-b three-a three-c} | |
| 91 do_test 1.3b { | |
| 92 db eval { | |
| 93 EXPLAIN QUERY PLAN | |
| 94 SELECT name FROM album JOIN track USING (aid) ORDER BY title, tn | |
| 95 } | |
| 96 } {/ORDER BY/} ;# separate sorting pass due to disabled optimization | |
| 97 optimization_control db all 1 | |
| 98 db cache flush | |
| 99 | |
| 100 # Reverse order sorts | |
| 101 # | |
| 102 do_test 1.4a { | |
| 103 db eval { | |
| 104 SELECT name FROM album JOIN track USING (aid) ORDER BY title DESC, tn | |
| 105 } | |
| 106 } {three-a three-c two-a two-b one-a one-c} | |
| 107 do_test 1.4b { | |
| 108 db eval { | |
| 109 SELECT name FROM album JOIN track USING (aid) ORDER BY +title DESC, +tn | |
| 110 } | |
| 111 } {three-a three-c two-a two-b one-a one-c} ;# verify same order after sorting | |
| 112 do_test 1.4c { | |
| 113 db eval { | |
| 114 EXPLAIN QUERY PLAN | |
| 115 SELECT name FROM album JOIN track USING (aid) ORDER BY title DESC, tn | |
| 116 } | |
| 117 } {~/ORDER BY/} ;# ORDER BY suppressed due to uniqueness constraints | |
| 118 | |
| 119 do_test 1.5a { | |
| 120 db eval { | |
| 121 SELECT name FROM album JOIN track USING (aid) ORDER BY title, tn DESC | |
| 122 } | |
| 123 } {one-c one-a two-b two-a three-c three-a} | |
| 124 do_test 1.5b { | |
| 125 db eval { | |
| 126 SELECT name FROM album JOIN track USING (aid) ORDER BY +title, +tn DESC | |
| 127 } | |
| 128 } {one-c one-a two-b two-a three-c three-a} ;# verify same order after sorting | |
| 129 do_test 1.5c { | |
| 130 db eval { | |
| 131 EXPLAIN QUERY PLAN | |
| 132 SELECT name FROM album JOIN track USING (aid) ORDER BY title, tn DESC | |
| 133 } | |
| 134 } {~/ORDER BY/} ;# ORDER BY suppressed due to uniqueness constraints | |
| 135 | |
| 136 do_test 1.6a { | |
| 137 db eval { | |
| 138 SELECT name FROM album CROSS JOIN track USING (aid) | |
| 139 ORDER BY title DESC, tn DESC | |
| 140 } | |
| 141 } {three-c three-a two-b two-a one-c one-a} | |
| 142 do_test 1.6b { | |
| 143 db eval { | |
| 144 SELECT name FROM album CROSS JOIN track USING (aid) | |
| 145 ORDER BY +title DESC, +tn DESC | |
| 146 } | |
| 147 } {three-c three-a two-b two-a one-c one-a} ;# verify same order after sorting | |
| 148 do_test 1.6c { | |
| 149 db eval { | |
| 150 EXPLAIN QUERY PLAN | |
| 151 SELECT name FROM album CROSS JOIN track USING (aid) | |
| 152 ORDER BY title DESC, tn DESC | |
| 153 } | |
| 154 } {~/ORDER BY/} ;# ORDER BY | |
| 155 | |
| 156 | |
| 157 # Reconstruct the test data to use indices rather than integer primary keys. | |
| 158 # | |
| 159 do_test 2.0 { | |
| 160 db eval { | |
| 161 BEGIN; | |
| 162 DROP TABLE album; | |
| 163 DROP TABLE track; | |
| 164 CREATE TABLE album( | |
| 165 aid INT PRIMARY KEY, | |
| 166 title TEXT NOT NULL | |
| 167 ); | |
| 168 CREATE INDEX album_i1 ON album(title, aid); | |
| 169 CREATE TABLE track( | |
| 170 aid INTEGER NOT NULL REFERENCES album, | |
| 171 tn INTEGER NOT NULL, | |
| 172 name TEXT, | |
| 173 UNIQUE(aid, tn) | |
| 174 ); | |
| 175 INSERT INTO album VALUES(1, '1-one'), (20, '2-two'), (3, '3-three'); | |
| 176 INSERT INTO track VALUES | |
| 177 (1, 1, 'one-a'), | |
| 178 (20, 2, 'two-b'), | |
| 179 (3, 3, 'three-c'), | |
| 180 (1, 3, 'one-c'), | |
| 181 (20, 1, 'two-a'), | |
| 182 (3, 1, 'three-a'); | |
| 183 COMMIT; | |
| 184 } | |
| 185 } {} | |
| 186 do_test 2.1a { | |
| 187 db eval { | |
| 188 SELECT name FROM album JOIN track USING (aid) ORDER BY title, tn | |
| 189 } | |
| 190 } {one-a one-c two-a two-b three-a three-c} | |
| 191 | |
| 192 # Verify that the ORDER BY clause is optimized out | |
| 193 # | |
| 194 do_test 2.1b { | |
| 195 db eval { | |
| 196 EXPLAIN QUERY PLAN | |
| 197 SELECT name FROM album JOIN track USING (aid) ORDER BY title, tn | |
| 198 } | |
| 199 } {/ORDER BY/} ;# ORDER BY required because of missing aid term in ORDER BY | |
| 200 | |
| 201 do_test 2.1c { | |
| 202 db eval { | |
| 203 SELECT name FROM album JOIN track USING (aid) ORDER BY title, aid, tn | |
| 204 } | |
| 205 } {one-a one-c two-a two-b three-a three-c} | |
| 206 do_test 2.1d { | |
| 207 db eval { | |
| 208 EXPLAIN QUERY PLAN | |
| 209 SELECT name FROM album JOIN track USING (aid) ORDER BY title, aid, tn | |
| 210 } | |
| 211 } {/ORDER BY/} ;# ORDER BY required in this case | |
| 212 | |
| 213 # The same query with ORDER BY clause optimization disabled via + operators | |
| 214 # should give exactly the same answer. | |
| 215 # | |
| 216 do_test 2.2a { | |
| 217 db eval { | |
| 218 SELECT name FROM album JOIN track USING (aid) ORDER BY +title, +tn | |
| 219 } | |
| 220 } {one-a one-c two-a two-b three-a three-c} | |
| 221 | |
| 222 # The output is sorted manually in this case. | |
| 223 # | |
| 224 do_test 2.2b { | |
| 225 db eval { | |
| 226 EXPLAIN QUERY PLAN | |
| 227 SELECT name FROM album JOIN track USING (aid) ORDER BY +title, +tn | |
| 228 } | |
| 229 } {/ORDER BY/} ;# separate sorting pass due to "+" on ORDER BY terms | |
| 230 | |
| 231 # The same query with ORDER BY optimizations turned off via built-in test. | |
| 232 # | |
| 233 do_test 2.3a { | |
| 234 optimization_control db order-by-idx-join 0 | |
| 235 db cache flush | |
| 236 db eval { | |
| 237 SELECT name FROM album JOIN track USING (aid) ORDER BY title, tn | |
| 238 } | |
| 239 } {one-a one-c two-a two-b three-a three-c} | |
| 240 do_test 2.3b { | |
| 241 db eval { | |
| 242 EXPLAIN QUERY PLAN | |
| 243 SELECT name FROM album JOIN track USING (aid) ORDER BY title, tn | |
| 244 } | |
| 245 } {/ORDER BY/} ;# separate sorting pass due to disabled optimization | |
| 246 optimization_control db all 1 | |
| 247 db cache flush | |
| 248 | |
| 249 # Reverse order sorts | |
| 250 # | |
| 251 do_test 2.4a { | |
| 252 db eval { | |
| 253 SELECT name FROM album JOIN track USING (aid) ORDER BY title DESC, tn | |
| 254 } | |
| 255 } {three-a three-c two-a two-b one-a one-c} | |
| 256 do_test 2.4b { | |
| 257 db eval { | |
| 258 SELECT name FROM album JOIN track USING (aid) ORDER BY +title DESC, +tn | |
| 259 } | |
| 260 } {three-a three-c two-a two-b one-a one-c} ;# verify same order after sorting | |
| 261 do_test 2.4c { | |
| 262 db eval { | |
| 263 EXPLAIN QUERY PLAN | |
| 264 SELECT name FROM album JOIN track USING (aid) ORDER BY title DESC, tn | |
| 265 } | |
| 266 } {/ORDER BY/} ;# separate sorting pass due to mixed DESC/ASC | |
| 267 | |
| 268 | |
| 269 do_test 2.5a { | |
| 270 db eval { | |
| 271 SELECT name FROM album JOIN track USING (aid) ORDER BY title, tn DESC | |
| 272 } | |
| 273 } {one-c one-a two-b two-a three-c three-a} | |
| 274 do_test 2.5b { | |
| 275 db eval { | |
| 276 SELECT name FROM album JOIN track USING (aid) ORDER BY +title, +tn DESC | |
| 277 } | |
| 278 } {one-c one-a two-b two-a three-c three-a} ;# verify same order after sorting | |
| 279 do_test 2.5c { | |
| 280 db eval { | |
| 281 EXPLAIN QUERY PLAN | |
| 282 SELECT name FROM album JOIN track USING (aid) ORDER BY title, tn DESC | |
| 283 } | |
| 284 } {/ORDER BY/} ;# separate sorting pass due to mixed ASC/DESC | |
| 285 | |
| 286 do_test 2.6a { | |
| 287 db eval { | |
| 288 SELECT name FROM album JOIN track USING (aid) ORDER BY title DESC, tn DESC | |
| 289 } | |
| 290 } {three-c three-a two-b two-a one-c one-a} | |
| 291 do_test 2.6b { | |
| 292 db eval { | |
| 293 SELECT name FROM album JOIN track USING (aid) ORDER BY +title DESC, +tn DESC | |
| 294 } | |
| 295 } {three-c three-a two-b two-a one-c one-a} ;# verify same order after sorting | |
| 296 do_test 2.6c { | |
| 297 db eval { | |
| 298 EXPLAIN QUERY PLAN | |
| 299 SELECT name FROM album JOIN track USING (aid) ORDER BY title DESC, tn DESC | |
| 300 } | |
| 301 } {/ORDER BY/} ;# ORDER BY required | |
| 302 | |
| 303 | |
| 304 # Generate another test dataset, but this time using mixed ASC/DESC indices. | |
| 305 # | |
| 306 do_test 3.0 { | |
| 307 db eval { | |
| 308 BEGIN; | |
| 309 DROP TABLE album; | |
| 310 DROP TABLE track; | |
| 311 CREATE TABLE album( | |
| 312 aid INTEGER PRIMARY KEY, | |
| 313 title TEXT UNIQUE NOT NULL | |
| 314 ); | |
| 315 CREATE TABLE track( | |
| 316 tid INTEGER PRIMARY KEY, | |
| 317 aid INTEGER NOT NULL REFERENCES album, | |
| 318 tn INTEGER NOT NULL, | |
| 319 name TEXT, | |
| 320 UNIQUE(aid ASC, tn DESC) | |
| 321 ); | |
| 322 INSERT INTO album VALUES(1, '1-one'), (2, '2-two'), (3, '3-three'); | |
| 323 INSERT INTO track VALUES | |
| 324 (NULL, 1, 1, 'one-a'), | |
| 325 (NULL, 2, 2, 'two-b'), | |
| 326 (NULL, 3, 3, 'three-c'), | |
| 327 (NULL, 1, 3, 'one-c'), | |
| 328 (NULL, 2, 1, 'two-a'), | |
| 329 (NULL, 3, 1, 'three-a'); | |
| 330 COMMIT; | |
| 331 } | |
| 332 } {} | |
| 333 do_test 3.1a { | |
| 334 db eval { | |
| 335 SELECT name FROM album CROSS JOIN track USING (aid) ORDER BY title, tn DESC | |
| 336 } | |
| 337 } {one-c one-a two-b two-a three-c three-a} | |
| 338 | |
| 339 # Verify that the ORDER BY clause is optimized out | |
| 340 # | |
| 341 do_test 3.1b { | |
| 342 db eval { | |
| 343 EXPLAIN QUERY PLAN | |
| 344 SELECT name FROM album CROSS JOIN track USING (aid) ORDER BY title, tn DESC | |
| 345 } | |
| 346 } {~/ORDER BY/} ;# ORDER BY optimized out | |
| 347 | |
| 348 # The same query with ORDER BY clause optimization disabled via + operators | |
| 349 # should give exactly the same answer. | |
| 350 # | |
| 351 do_test 3.2a { | |
| 352 db eval { | |
| 353 SELECT name FROM album JOIN track USING (aid) ORDER BY +title, +tn DESC | |
| 354 } | |
| 355 } {one-c one-a two-b two-a three-c three-a} | |
| 356 | |
| 357 # The output is sorted manually in this case. | |
| 358 # | |
| 359 do_test 3.2b { | |
| 360 db eval { | |
| 361 EXPLAIN QUERY PLAN | |
| 362 SELECT name FROM album JOIN track USING (aid) ORDER BY +title, +tn DESC | |
| 363 } | |
| 364 } {/ORDER BY/} ;# separate sorting pass due to "+" on ORDER BY terms | |
| 365 | |
| 366 # The same query with ORDER BY optimizations turned off via built-in test. | |
| 367 # | |
| 368 do_test 3.3a { | |
| 369 optimization_control db order-by-idx-join 0 | |
| 370 db cache flush | |
| 371 db eval { | |
| 372 SELECT name FROM album JOIN track USING (aid) ORDER BY title, tn DESC | |
| 373 } | |
| 374 } {one-c one-a two-b two-a three-c three-a} | |
| 375 do_test 3.3b { | |
| 376 db eval { | |
| 377 EXPLAIN QUERY PLAN | |
| 378 SELECT name FROM album JOIN track USING (aid) ORDER BY title, tn DESC | |
| 379 } | |
| 380 } {/ORDER BY/} ;# separate sorting pass due to disabled optimization | |
| 381 optimization_control db all 1 | |
| 382 db cache flush | |
| 383 | |
| 384 # Without the mixed ASC/DESC on ORDER BY | |
| 385 # | |
| 386 do_test 3.4a { | |
| 387 db eval { | |
| 388 SELECT name FROM album JOIN track USING (aid) ORDER BY title, tn | |
| 389 } | |
| 390 } {one-a one-c two-a two-b three-a three-c} | |
| 391 do_test 3.4b { | |
| 392 db eval { | |
| 393 SELECT name FROM album JOIN track USING (aid) ORDER BY +title, +tn | |
| 394 } | |
| 395 } {one-a one-c two-a two-b three-a three-c} ;# verify same order after sorting | |
| 396 do_test 3.4c { | |
| 397 db eval { | |
| 398 EXPLAIN QUERY PLAN | |
| 399 SELECT name FROM album JOIN track USING (aid) ORDER BY title, tn | |
| 400 } | |
| 401 } {~/ORDER BY/} ;# ORDER BY suppressed by uniqueness constraints | |
| 402 | |
| 403 do_test 3.5a { | |
| 404 db eval { | |
| 405 SELECT name FROM album JOIN track USING (aid) ORDER BY title DESC, tn DESC | |
| 406 } | |
| 407 } {three-c three-a two-b two-a one-c one-a} | |
| 408 do_test 3.5b { | |
| 409 db eval { | |
| 410 SELECT name FROM album JOIN track USING (aid) ORDER BY +title DESC, +tn DESC | |
| 411 } | |
| 412 } {three-c three-a two-b two-a one-c one-a} ;# verify same order after sorting | |
| 413 do_test 3.5c { | |
| 414 db eval { | |
| 415 EXPLAIN QUERY PLAN | |
| 416 SELECT name FROM album JOIN track USING (aid) ORDER BY title DESC, tn DESC | |
| 417 } | |
| 418 } {~/ORDER BY/} ;# ORDER BY suppressed by uniqueness constraints | |
| 419 | |
| 420 | |
| 421 do_test 3.6a { | |
| 422 db eval { | |
| 423 SELECT name FROM album CROSS JOIN track USING (aid) ORDER BY title DESC, tn | |
| 424 } | |
| 425 } {three-a three-c two-a two-b one-a one-c} | |
| 426 do_test 3.6b { | |
| 427 db eval { | |
| 428 SELECT name FROM album CROSS JOIN track USING (aid) | |
| 429 ORDER BY +title DESC, +tn | |
| 430 } | |
| 431 } {three-a three-c two-a two-b one-a one-c} ;# verify same order after sorting | |
| 432 do_test 3.6c { | |
| 433 db eval { | |
| 434 EXPLAIN QUERY PLAN | |
| 435 SELECT name FROM album CROSS JOIN track USING (aid) ORDER BY title DESC, tn | |
| 436 } | |
| 437 } {~/ORDER BY/} ;# inverted ASC/DESC is optimized out | |
| 438 | |
| 439 # Ticket 5ed1772895bf3deeab78c5e3519b1da9165c541b (2013-06-04) | |
| 440 # Incorrect ORDER BY on an indexed JOIN | |
| 441 # | |
| 442 do_test 4.0 { | |
| 443 db eval { | |
| 444 CREATE TABLE t41(a INT UNIQUE NOT NULL, b INT NOT NULL); | |
| 445 CREATE INDEX t41ba ON t41(b,a); | |
| 446 CREATE TABLE t42(x INT NOT NULL REFERENCES t41(a), y INT NOT NULL); | |
| 447 CREATE UNIQUE INDEX t42xy ON t42(x,y); | |
| 448 INSERT INTO t41 VALUES(1,1),(3,1); | |
| 449 INSERT INTO t42 VALUES(1,13),(1,15),(3,14),(3,16); | |
| 450 | |
| 451 SELECT b, y FROM t41 CROSS JOIN t42 ON x=a ORDER BY b, y; | |
| 452 } | |
| 453 } {1 13 1 14 1 15 1 16} | |
| 454 | |
| 455 # No sorting of queries that omit the FROM clause. | |
| 456 # | |
| 457 do_execsql_test 5.0 { | |
| 458 EXPLAIN QUERY PLAN SELECT 5 ORDER BY 1 | |
| 459 } {} | |
| 460 do_execsql_test 5.1 { | |
| 461 EXPLAIN QUERY PLAN SELECT 5 UNION ALL SELECT 3 ORDER BY 1 | |
| 462 } {~/B-TREE/} | |
| 463 do_execsql_test 5.2 { | |
| 464 SELECT 5 UNION ALL SELECT 3 ORDER BY 1 | |
| 465 } {3 5} | |
| 466 do_execsql_test 5.3 { | |
| 467 SELECT 986 AS x GROUP BY X ORDER BY X | |
| 468 } {986} | |
| 469 | |
| 470 # The following test (originally derived from a single test within fuzz.test) | |
| 471 # verifies that a PseudoTable cursor is not closed prematurely in a deeply | |
| 472 # nested query. This test caused a segfault on 3.8.5 beta. | |
| 473 # | |
| 474 do_execsql_test 6.0 { | |
| 475 CREATE TABLE abc(a, b, c); | |
| 476 INSERT INTO abc VALUES(1, 2, 3); | |
| 477 INSERT INTO abc VALUES(4, 5, 6); | |
| 478 INSERT INTO abc VALUES(7, 8, 9); | |
| 479 SELECT ( | |
| 480 SELECT 'hardware' FROM ( | |
| 481 SELECT 'software' ORDER BY 'firmware' ASC, 'sportswear' DESC | |
| 482 ) GROUP BY 1 HAVING length(b) | |
| 483 ) | |
| 484 FROM abc; | |
| 485 } {hardware hardware hardware} | |
| 486 | |
| 487 # Here is a test for a query-planner problem reported on the SQLite | |
| 488 # mailing list on 2014-09-18 by "Merike". Beginning with version 3.8.0, | |
| 489 # a separate sort was being used rather than using the single-column | |
| 490 # index. This was due to an oversight in the indexMightHelpWithOrderby() | |
| 491 # routine in where.c. | |
| 492 # | |
| 493 do_execsql_test 7.0 { | |
| 494 CREATE TABLE t7(a,b); | |
| 495 CREATE INDEX t7a ON t7(a); | |
| 496 CREATE INDEX t7ab ON t7(a,b); | |
| 497 EXPLAIN QUERY PLAN | |
| 498 SELECT * FROM t7 WHERE a=?1 ORDER BY rowid; | |
| 499 } {~/ORDER BY/} | |
| 500 | |
| 501 #------------------------------------------------------------------------- | |
| 502 # Test a partial sort large enough to cause the sorter to spill data | |
| 503 # to disk. | |
| 504 # | |
| 505 reset_db | |
| 506 do_execsql_test 8.0 { | |
| 507 PRAGMA cache_size = 5; | |
| 508 CREATE TABLE t1(a, b); | |
| 509 CREATE INDEX i1 ON t1(a); | |
| 510 } | |
| 511 | |
| 512 do_eqp_test 8.1 { | |
| 513 SELECT * FROM t1 ORDER BY a, b; | |
| 514 } { | |
| 515 0 0 0 {SCAN TABLE t1 USING INDEX i1} | |
| 516 0 0 0 {USE TEMP B-TREE FOR RIGHT PART OF ORDER BY} | |
| 517 } | |
| 518 | |
| 519 do_execsql_test 8.2 { | |
| 520 WITH cnt(i) AS ( | |
| 521 SELECT 1 UNION ALL SELECT i+1 FROM cnt WHERE i<10000 | |
| 522 ) | |
| 523 INSERT INTO t1 SELECT i%2, randomblob(500) FROM cnt; | |
| 524 } | |
| 525 | |
| 526 do_test 8.3 { | |
| 527 db eval { SELECT * FROM t1 ORDER BY a, b } { incr res $a } | |
| 528 set res | |
| 529 } 5000 | |
| 530 | |
| 531 #--------------------------------------------------------------------------- | |
| 532 # https://www.sqlite.org/src/tktview/cb3aa0641d9a413841c004293a4fc06cdc122029 | |
| 533 # | |
| 534 # Adverse interaction between scalar subqueries and the partial-sorting | |
| 535 # logic. | |
| 536 # | |
| 537 do_execsql_test 9.0 { | |
| 538 DROP TABLE IF EXISTS t1; | |
| 539 CREATE TABLE t1(x INTEGER PRIMARY KEY); | |
| 540 INSERT INTO t1 VALUES(1),(2); | |
| 541 DROP TABLE IF EXISTS t2; | |
| 542 CREATE TABLE t2(y); | |
| 543 INSERT INTO t2 VALUES(9),(8),(3),(4); | |
| 544 SELECT (SELECT x||y FROM t2, t1 ORDER BY x, y); | |
| 545 } {13} | |
| 546 | |
| 547 | |
| 548 finish_test | |
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