1# 2015-08-31 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 indexes on expressions. 13# 14 15set testdir [file dirname $argv0] 16source $testdir/tester.tcl 17 18do_execsql_test indexexpr1-100 { 19 CREATE TABLE t1(a,b,c); 20 INSERT INTO t1(a,b,c) 21 /* 123456789 123456789 123456789 123456789 123456789 123456789 */ 22 VALUES('In_the_beginning_was_the_Word',1,1), 23 ('and_the_Word_was_with_God',1,2), 24 ('and_the_Word_was_God',1,3), 25 ('The_same_was_in_the_beginning_with_God',2,1), 26 ('All_things_were_made_by_him',3,1), 27 ('and_without_him_was_not_any_thing_made_that_was_made',3,2); 28 CREATE INDEX t1a1 ON t1(substr(a,1,12)); 29} {} 30do_execsql_test indexexpr1-110 { 31 SELECT b, c, '|' FROM t1 WHERE substr(a,1,12)=='and_the_Word' ORDER BY b, c; 32} {1 2 | 1 3 |} 33do_execsql_test indexexpr1-110eqp { 34 EXPLAIN QUERY PLAN 35 SELECT b, c, '|' FROM t1 WHERE substr(a,1,12)=='and_the_Word' ORDER BY b, c; 36} {/USING INDEX t1a1/} 37do_execsql_test indexexpr1-120 { 38 SELECT b, c, '|' FROM t1 WHERE 'and_the_Word'==substr(a,1,12) ORDER BY b, c; 39} {1 2 | 1 3 |} 40do_execsql_test indexexpr1-120eqp { 41 EXPLAIN QUERY PLAN 42 SELECT b, c, '|' FROM t1 WHERE 'and_the_Word'==substr(a,1,12) ORDER BY b, c; 43} {/USING INDEX t1a1/} 44 45do_execsql_test indexexpr1-130 { 46 CREATE INDEX t1ba ON t1(b,substr(a,2,3),c); 47 SELECT c FROM t1 WHERE b=1 AND substr(a,2,3)='nd_' ORDER BY c; 48} {2 3} 49do_execsql_test indexexpr1-130eqp { 50 EXPLAIN QUERY PLAN 51 SELECT c FROM t1 WHERE b=1 AND substr(a,2,3)='nd_' ORDER BY c; 52} {/USING INDEX t1ba/} 53 54do_execsql_test indexexpr1-140 { 55 SELECT rowid, substr(a,b,3), '|' FROM t1 ORDER BY 2; 56} {1 In_ | 2 and | 3 and | 6 d_w | 4 he_ | 5 l_t |} 57do_execsql_test indexexpr1-141 { 58 CREATE INDEX t1abx ON t1(substr(a,b,3)); 59 SELECT rowid FROM t1 WHERE substr(a,b,3)<='and' ORDER BY +rowid; 60} {1 2 3} 61do_execsql_test indexexpr1-141eqp { 62 EXPLAIN QUERY PLAN 63 SELECT rowid FROM t1 WHERE substr(a,b,3)<='and' ORDER BY +rowid; 64} {/USING INDEX t1abx/} 65do_execsql_test indexexpr1-142 { 66 SELECT rowid FROM t1 WHERE +substr(a,b,3)<='and' ORDER BY +rowid; 67} {1 2 3} 68do_execsql_test indexexpr1-150 { 69 SELECT rowid FROM t1 WHERE substr(a,b,3) IN ('and','l_t','xyz') 70 ORDER BY +rowid; 71} {2 3 5} 72do_execsql_test indexexpr1-150eqp { 73 EXPLAIN QUERY PLAN 74 SELECT rowid FROM t1 WHERE substr(a,b,3) IN ('and','l_t','xyz') 75 ORDER BY +rowid; 76} {/USING INDEX t1abx/} 77 78do_execsql_test indexexpr1-160 { 79 ALTER TABLE t1 ADD COLUMN d; 80 UPDATE t1 SET d=length(a); 81 CREATE INDEX t1a2 ON t1(SUBSTR(a, 27, 3)) WHERE d>=29; 82 SELECT rowid, b, c FROM t1 83 WHERE substr(a,27,3)=='ord' AND d>=29; 84} {1 1 1} 85do_execsql_test indexexpr1-160eqp { 86 EXPLAIN QUERY PLAN 87 SELECT rowid, b, c FROM t1 88 WHERE substr(a,27,3)=='ord' AND d>=29; 89} {/USING INDEX t1a2/} 90 91# ORDER BY using an indexed expression 92# 93do_execsql_test indexexpr1-170 { 94 CREATE INDEX t1alen ON t1(length(a)); 95 SELECT length(a) FROM t1 ORDER BY length(a); 96} {20 25 27 29 38 52} 97do_execsql_test indexexpr1-170eqp { 98 EXPLAIN QUERY PLAN 99 SELECT length(a) FROM t1 ORDER BY length(a); 100} {/SCAN TABLE t1 USING INDEX t1alen/} 101do_execsql_test indexexpr1-171 { 102 SELECT length(a) FROM t1 ORDER BY length(a) DESC; 103} {52 38 29 27 25 20} 104do_execsql_test indexexpr1-171eqp { 105 EXPLAIN QUERY PLAN 106 SELECT length(a) FROM t1 ORDER BY length(a) DESC; 107} {/SCAN TABLE t1 USING INDEX t1alen/} 108 109do_execsql_test indexexpr1-200 { 110 DROP TABLE t1; 111 CREATE TABLE t1(id ANY PRIMARY KEY, a,b,c) WITHOUT ROWID; 112 INSERT INTO t1(id,a,b,c) 113 VALUES(1,'In_the_beginning_was_the_Word',1,1), 114 (2,'and_the_Word_was_with_God',1,2), 115 (3,'and_the_Word_was_God',1,3), 116 (4,'The_same_was_in_the_beginning_with_God',2,1), 117 (5,'All_things_were_made_by_him',3,1), 118 (6,'and_without_him_was_not_any_thing_made_that_was_made',3,2); 119 CREATE INDEX t1a1 ON t1(substr(a,1,12)); 120} {} 121do_execsql_test indexexpr1-210 { 122 SELECT b, c, '|' FROM t1 WHERE substr(a,1,12)=='and_the_Word' ORDER BY b, c; 123} {1 2 | 1 3 |} 124do_execsql_test indexexpr1-210eqp { 125 EXPLAIN QUERY PLAN 126 SELECT b, c, '|' FROM t1 WHERE substr(a,1,12)=='and_the_Word' ORDER BY b, c; 127} {/USING INDEX t1a1/} 128do_execsql_test indexexpr1-220 { 129 SELECT b, c, '|' FROM t1 WHERE 'and_the_Word'==substr(a,1,12) ORDER BY b, c; 130} {1 2 | 1 3 |} 131do_execsql_test indexexpr1-220eqp { 132 EXPLAIN QUERY PLAN 133 SELECT b, c, '|' FROM t1 WHERE 'and_the_Word'==substr(a,1,12) ORDER BY b, c; 134} {/USING INDEX t1a1/} 135 136do_execsql_test indexexpr1-230 { 137 CREATE INDEX t1ba ON t1(b,substr(a,2,3),c); 138 SELECT c FROM t1 WHERE b=1 AND substr(a,2,3)='nd_' ORDER BY c; 139} {2 3} 140do_execsql_test indexexpr1-230eqp { 141 EXPLAIN QUERY PLAN 142 SELECT c FROM t1 WHERE b=1 AND substr(a,2,3)='nd_' ORDER BY c; 143} {/USING INDEX t1ba/} 144 145do_execsql_test indexexpr1-240 { 146 SELECT id, substr(a,b,3), '|' FROM t1 ORDER BY 2; 147} {1 In_ | 2 and | 3 and | 6 d_w | 4 he_ | 5 l_t |} 148do_execsql_test indexexpr1-241 { 149 CREATE INDEX t1abx ON t1(substr(a,b,3)); 150 SELECT id FROM t1 WHERE substr(a,b,3)<='and' ORDER BY +id; 151} {1 2 3} 152do_execsql_test indexexpr1-241eqp { 153 EXPLAIN QUERY PLAN 154 SELECT id FROM t1 WHERE substr(a,b,3)<='and' ORDER BY +id; 155} {/USING INDEX t1abx/} 156do_execsql_test indexexpr1-242 { 157 SELECT id FROM t1 WHERE +substr(a,b,3)<='and' ORDER BY +id; 158} {1 2 3} 159do_execsql_test indexexpr1-250 { 160 SELECT id FROM t1 WHERE substr(a,b,3) IN ('and','l_t','xyz') 161 ORDER BY +id; 162} {2 3 5} 163do_execsql_test indexexpr1-250eqp { 164 EXPLAIN QUERY PLAN 165 SELECT id FROM t1 WHERE substr(a,b,3) IN ('and','l_t','xyz') 166 ORDER BY +id; 167} {/USING INDEX t1abx/} 168 169do_execsql_test indexexpr1-260 { 170 ALTER TABLE t1 ADD COLUMN d; 171 UPDATE t1 SET d=length(a); 172 CREATE INDEX t1a2 ON t1(SUBSTR(a, 27, 3)) WHERE d>=29; 173 SELECT id, b, c FROM t1 174 WHERE substr(a,27,3)=='ord' AND d>=29; 175} {1 1 1} 176do_execsql_test indexexpr1-260eqp { 177 EXPLAIN QUERY PLAN 178 SELECT id, b, c FROM t1 179 WHERE substr(a,27,3)=='ord' AND d>=29; 180} {/USING INDEX t1a2/} 181 182 183do_catchsql_test indexexpr1-300 { 184 CREATE TABLE t2(a,b,c); INSERT INTO t2 VALUES(1,2,3); 185 CREATE INDEX t2x1 ON t2(a,b+random()); 186} {1 {non-deterministic functions prohibited in index expressions}} 187do_catchsql_test indexexpr1-301 { 188 CREATE INDEX t2x1 ON t2(julianday('now',a)); 189} {1 {non-deterministic function in index expression or CHECK constraint}} 190do_catchsql_test indexexpr1-310 { 191 CREATE INDEX t2x2 ON t2(a,b+(SELECT 15)); 192} {1 {subqueries prohibited in index expressions}} 193do_catchsql_test indexexpr1-320 { 194 CREATE TABLE e1(x,y,UNIQUE(y,substr(x,1,5))); 195} {1 {expressions prohibited in PRIMARY KEY and UNIQUE constraints}} 196do_catchsql_test indexexpr1-330 { 197 CREATE TABLE e1(x,y,PRIMARY KEY(y,substr(x,1,5))); 198} {1 {expressions prohibited in PRIMARY KEY and UNIQUE constraints}} 199do_catchsql_test indexexpr1-331 { 200 CREATE TABLE e1(x,y,PRIMARY KEY(y,substr(x,1,5))) WITHOUT ROWID; 201} {1 {expressions prohibited in PRIMARY KEY and UNIQUE constraints}} 202do_catchsql_test indexexpr1-340 { 203 CREATE TABLE e1(x,y,FOREIGN KEY(substr(y,1,5)) REFERENCES t1); 204} {1 {near "(": syntax error}} 205 206do_execsql_test indexexpr1-400 { 207 CREATE TABLE t3(a,b,c); 208 WITH RECURSIVE c(x) AS (VALUES(1) UNION SELECT x+1 FROM c WHERE x<30) 209 INSERT INTO t3(a,b,c) 210 SELECT x, printf('ab%04xyz',x), random() FROM c; 211 CREATE UNIQUE INDEX t3abc ON t3(CAST(a AS text), b, substr(c,1,3)); 212 SELECT a FROM t3 WHERE CAST(a AS text)<='10' ORDER BY +a; 213 PRAGMA integrity_check; 214} {1 10 ok} 215do_catchsql_test indexexpr1-410 { 216 INSERT INTO t3 SELECT * FROM t3 WHERE rowid=10; 217} {1 {UNIQUE constraint failed: index 't3abc'}} 218 219do_execsql_test indexexpr1-500 { 220 CREATE TABLE t5(a); 221 CREATE TABLE cnt(x); 222 WITH RECURSIVE 223 c(x) AS (VALUES(1) UNION ALL SELECT x+1 FROM c WHERE x<5) 224 INSERT INTO cnt(x) SELECT x FROM c; 225 INSERT INTO t5(a) SELECT printf('abc%03dxyz',x) FROM cnt; 226 CREATE INDEX t5ax ON t5( substr(a,4,3) ); 227} {} 228do_execsql_test indexexpr1-510 { 229 -- The use of the "k" alias in the WHERE clause is technically 230 -- illegal, but SQLite allows it for historical reasons. In this 231 -- test and the next, verify that "k" can be used by the t5ax index 232 SELECT substr(a,4,3) AS k FROM cnt, t5 WHERE k=printf('%03d',x); 233} {001 002 003 004 005} 234do_execsql_test indexexpr1-510eqp { 235 EXPLAIN QUERY PLAN 236 SELECT substr(a,4,3) AS k FROM cnt, t5 WHERE k=printf('%03d',x); 237} {/USING INDEX t5ax/} 238 239# Skip-scan on an indexed expression 240# 241do_execsql_test indexexpr1-600 { 242 DROP TABLE IF EXISTS t4; 243 CREATE TABLE t4(a,b,c,d,e,f,g,h,i); 244 CREATE INDEX t4all ON t4(a,b,c<d,e,f,i,h); 245 INSERT INTO t4 VALUES(1,2,3,4,5,6,7,8,9); 246 ANALYZE; 247 DELETE FROM sqlite_stat1; 248 INSERT INTO sqlite_stat1 249 VALUES('t4','t4all','600000 160000 40000 10000 2000 600 100 40 10'); 250 ANALYZE sqlite_master; 251 SELECT i FROM t4 WHERE e=5; 252} {9} 253 254# Indexed expressions on both sides of an == in a WHERE clause. 255# 256do_execsql_test indexexpr1-700 { 257 DROP TABLE IF EXISTS t7; 258 CREATE TABLE t7(a,b,c); 259 INSERT INTO t7(a,b,c) VALUES(1,2,2),('abc','def','def'),(4,5,6); 260 CREATE INDEX t7b ON t7(+b); 261 CREATE INDEX t7c ON t7(+c); 262 SELECT *, '|' FROM t7 WHERE +b=+c ORDER BY +a; 263} {1 2 2 | abc def def |} 264do_execsql_test indexexpr1-710 { 265 CREATE TABLE t71(a,b,c); 266 CREATE INDEX t71bc ON t71(b+c); 267 CREATE TABLE t72(x,y,z); 268 CREATE INDEX t72yz ON t72(y+z); 269 INSERT INTO t71(a,b,c) VALUES(1,11,2),(2,7,15),(3,5,4); 270 INSERT INTO t72(x,y,z) VALUES(1,10,3),(2,8,14),(3,9,9); 271 SELECT a, x, '|' FROM t71, t72 272 WHERE b+c=y+z 273 ORDER BY +a, +x; 274} {1 1 | 2 2 |} 275 276# Collating sequences on indexes of expressions 277# 278do_execsql_test indexexpr1-800 { 279 DROP TABLE IF EXISTS t8; 280 CREATE TABLE t8(a INTEGER PRIMARY KEY, b TEXT); 281 CREATE UNIQUE INDEX t8bx ON t8(substr(b,2,4) COLLATE nocase); 282 INSERT INTO t8(a,b) VALUES(1,'Alice'),(2,'Bartholemew'),(3,'Cynthia'); 283 SELECT * FROM t8 WHERE substr(b,2,4)='ARTH' COLLATE nocase; 284} {2 Bartholemew} 285do_catchsql_test indexexpr1-810 { 286 INSERT INTO t8(a,b) VALUES(4,'BARTHMERE'); 287} {1 {UNIQUE constraint failed: index 't8bx'}} 288do_catchsql_test indexexpr1-820 { 289 DROP INDEX t8bx; 290 CREATE UNIQUE INDEX t8bx ON t8(substr(b,2,4) COLLATE rtrim); 291 INSERT INTO t8(a,b) VALUES(4,'BARTHMERE'); 292} {0 {}} 293 294# Check that PRAGMA integrity_check works correctly on a 295# UNIQUE index that includes rowid and expression terms. 296# 297do_execsql_test indexexpr1-900 { 298 CREATE TABLE t9(a,b,c,d); 299 CREATE UNIQUE INDEX t9x1 ON t9(c,abs(d),b); 300 INSERT INTO t9(rowid,a,b,c,d) VALUES(1,2,3,4,5); 301 INSERT INTO t9(rowid,a,b,c,d) VALUES(2,NULL,NULL,NULL,NULL); 302 INSERT INTO t9(rowid,a,b,c,d) VALUES(3,NULL,NULL,NULL,NULL); 303 INSERT INTO t9(rowid,a,b,c,d) VALUES(4,5,6,7,8); 304 PRAGMA integrity_check; 305} {ok} 306do_catchsql_test indexexpr1-910 { 307 INSERT INTO t9(a,b,c,d) VALUES(5,6,7,-8); 308} {1 {UNIQUE constraint failed: index 't9x1'}} 309 310# Test cases derived from a NEVER() maro failure discovered by 311# Jonathan Metzman using AFL 312# 313do_execsql_test indexexpr1-1000 { 314 DROP TABLE IF EXISTS t0; 315 CREATE TABLE t0(a,b,t); 316 CREATE INDEX i ON t0(a in(0,1)); 317 INSERT INTO t0 VALUES(0,1,2),(2,3,4),(5,6,7); 318 UPDATE t0 SET b=99 WHERE (a in(0,1))=0; 319 SELECT *, '|' FROM t0 ORDER BY +a; 320} {0 1 2 | 2 99 4 | 5 99 7 |} 321do_execsql_test indexexpr1-1010 { 322 UPDATE t0 SET b=88 WHERE (a in(0,1))=1; 323 SELECT *, '|' FROM t0 ORDER BY +a; 324} {0 88 2 | 2 99 4 | 5 99 7 |} 325 326# 2016-10-10 327# Make sure indexes on expressions skip over initial NULL values in the 328# index as they are suppose to do. 329# Ticket https://www.sqlite.org/src/tktview/4baa46491212947 330# 331do_execsql_test indexexpr1-1100 { 332 DROP TABLE IF EXISTS t1; 333 CREATE TABLE t1(a); 334 INSERT INTO t1 VALUES(NULL),(1); 335 SELECT '1:', typeof(a), a FROM t1 WHERE a<10; 336 SELECT '2:', typeof(a), a FROM t1 WHERE a+0<10; 337 CREATE INDEX t1x1 ON t1(a); 338 CREATE INDEX t1x2 ON t1(a+0); 339 SELECT '3:', typeof(a), a FROM t1 WHERE a<10; 340 SELECT '4:', typeof(a), a FROM t1 WHERE a+0<10; 341} {1: integer 1 2: integer 1 3: integer 1 4: integer 1} 342 343do_execsql_test indexexpr1-1200 { 344 CREATE TABLE t10(a int, b int, c int, d int); 345 INSERT INTO t10(a, b, c, d) VALUES(0, 0, 2, 2); 346 INSERT INTO t10(a, b, c, d) VALUES(0, 0, 0, 0); 347 INSERT INTO t10(a, b, c, d) VALUES(0, 0, 1, 1); 348 INSERT INTO t10(a, b, c, d) VALUES(1, 1, 1, 1); 349 INSERT INTO t10(a, b, c, d) VALUES(1, 1, 0, 0); 350 INSERT INTO t10(a, b, c, d) VALUES(2, 2, 0, 0); 351 352 SELECT a+b, c+d FROM t10 ORDER BY a+b, c+d; 353} { 354 0 0 0 2 0 4 2 0 2 2 4 0 355} 356do_execsql_test indexexpr1-1200.1 { 357 CREATE INDEX t10_ab ON t10(a+b); 358} 359do_execsql_test indexexpr1-1200.2 { 360 SELECT a+b, c+d FROM t10 ORDER BY a+b, c+d; 361} { 362 0 0 0 2 0 4 2 0 2 2 4 0 363} 364do_execsql_test indexexpr1-1200.3 { 365 CREATE INDEX t10_abcd ON t10(a+b,c+d); 366} 367do_execsql_test indexexpr1-1200.4 { 368 SELECT a+b, c+d FROM t10 ORDER BY a+b, c+d; 369} { 370 0 0 0 2 0 4 2 0 2 2 4 0 371} 372 373# Ticket https://www.sqlite.org/src/tktview/eb703ba7b50c1a 374# Incorrect result using an index on an expression with a collating function 375# 376do_execsql_test indexexpr1-1300.1 { 377 CREATE TABLE t1300(a INTEGER PRIMARY KEY, b); 378 INSERT INTO t1300 VALUES(1,'coffee'),(2,'COFFEE'),(3,'stress'),(4,'STRESS'); 379 CREATE INDEX t1300bexpr ON t1300( substr(b,4) ); 380 SELECT a FROM t1300 WHERE substr(b,4)='ess' COLLATE nocase ORDER BY +a; 381} {3 4} 382 383# Ticket https://sqlite.org/src/tktview/aa98619a 384# Assertion fault using an index on a constant 385# 386do_execsql_test indexexpr1-1400 { 387 CREATE TABLE t1400(x TEXT); 388 CREATE INDEX t1400x ON t1400(1); -- Index on a constant 389 SELECT 1 IN (SELECT 2) FROM t1400; 390} {} 391do_execsql_test indexexpr1-1410 { 392 INSERT INTO t1400 VALUES('a'),('b'); 393 SELECT 1 IN (SELECT 2) FROM t1400; 394} {0 0} 395do_execsql_test indexexpr1-1420 { 396 SELECT 1 IN (SELECT 2 UNION ALL SELECT 1) FROM t1400; 397} {1 1} 398do_execsql_test indexexpr1-1430 { 399 DROP INDEX t1400x; 400 CREATE INDEX t1400x ON t1400(abs(15+3)); 401 SELECT abs(15+3) IN (SELECT 17 UNION ALL SELECT 18) FROM t1; 402} {1 1} 403 404# 2018-01-02 ticket https://sqlite.org/src/info/dc3f932f5a147771 405# A REPLACE into a table that uses an index on an expression causes 406# an assertion fault. Problem discovered by OSSFuzz. 407# 408do_execsql_test indexexpr1-1500 { 409 CREATE TABLE t1500(a INT PRIMARY KEY, b INT UNIQUE); 410 CREATE INDEX t1500ab ON t1500(a*b); 411 INSERT INTO t1500(a,b) VALUES(1,2); 412 REPLACE INTO t1500(a,b) VALUES(1,3); -- formerly caused assertion fault 413 SELECT * FROM t1500; 414} {1 3} 415 416# 2018-01-03 OSSFuzz discovers another test case for the same problem 417# above. 418# 419do_execsql_test indexexpr-1510 { 420 DROP TABLE IF EXISTS t1; 421 CREATE TABLE t1(a PRIMARY KEY,b UNIQUE); 422 REPLACE INTO t1 VALUES(2, 1); 423 REPLACE INTO t1 SELECT 6,1; 424 CREATE INDEX t1aa ON t1(a-a); 425 REPLACE INTO t1 SELECT a, randomblob(a) FROM t1 426} {} 427 428# 2018-01-31 https://www.sqlite.org/src/tktview/343634942dd54ab57b702411 429# When an index on an expression depends on the string representation of 430# a numeric table column, trouble can arise since there are multiple 431# string that can map to the same numeric value. (Ex: 123, 0123, 000123). 432# 433do_execsql_test indexexpr-1600 { 434 DROP TABLE IF EXISTS t1; 435 CREATE TABLE t1 (a INTEGER, b); 436 CREATE INDEX idx1 ON t1 (lower(a)); 437 INSERT INTO t1 VALUES('0001234',3); 438 PRAGMA integrity_check; 439} {ok} 440do_execsql_test indexexpr-1610 { 441 INSERT INTO t1 VALUES('1234',0),('001234',2),('01234',1); 442 SELECT b FROM t1 WHERE lower(a)='1234' ORDER BY +b; 443} {0 1 2 3} 444do_execsql_test indexexpr-1620 { 445 SELECT b FROM t1 WHERE lower(a)='01234' ORDER BY +b; 446} {} 447 448# 2019-08-09 https://www.sqlite.org/src/info/9080b6227fabb466 449# ExprImpliesExpr theorem prover bug: 450# "(NULL IS FALSE) IS FALSE" does not imply "NULL IS NULL" 451# 452do_execsql_test indexexpr-1700 { 453 DROP TABLE IF EXISTS t0; 454 CREATE TABLE t0(c0); 455 INSERT INTO t0(c0) VALUES (0); 456 CREATE INDEX i0 ON t0(NULL > c0) WHERE (NULL NOT NULL); 457 SELECT * FROM t0 WHERE ((NULL IS FALSE) IS FALSE); 458} {0} 459 460# 2019-09-02 https://www.sqlite.org/src/tktview/57af00b6642ecd6848 461# When the expression of an an index-on-expression references a 462# table column of type REAL that is actually holding an MEM_IntReal 463# value, be sure to use the REAL value and not the INT value when 464# computing the expression. 465# 466ifcapable like_match_blobs { 467 do_execsql_test indexexpr-1800 { 468 DROP TABLE IF EXISTS t0; 469 CREATE TABLE t0(c0 REAL, c1 TEXT); 470 CREATE INDEX i0 ON t0(+c0, c0); 471 INSERT INTO t0(c0) VALUES(0); 472 SELECT CAST(+ t0.c0 AS BLOB) LIKE 0 FROM t0; 473 } {0} 474 do_execsql_test indexexpr-1810 { 475 SELECT CAST(+ t0.c0 AS BLOB) LIKE '0.0' FROM t0; 476 } {1} 477 do_execsql_test indexexpr-1820 { 478 DROP TABLE IF EXISTS t1; 479 CREATE TABLE t1(x REAL); 480 CREATE INDEX t1x ON t1(x, +x); 481 INSERT INTO t1(x) VALUES(2); 482 SELECT +x FROM t1 WHERE x=2; 483 } {2.0} 484} 485 486finish_test 487