1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/persistentdata/persistentstorage/sqlite3api/TEST/TclScript/limit.test Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,472 @@
1.4 +# 2001 November 6
1.5 +#
1.6 +# The author disclaims copyright to this source code. In place of
1.7 +# a legal notice, here is a blessing:
1.8 +#
1.9 +# May you do good and not evil.
1.10 +# May you find forgiveness for yourself and forgive others.
1.11 +# May you share freely, never taking more than you give.
1.12 +#
1.13 +#***********************************************************************
1.14 +# This file implements regression tests for SQLite library. The
1.15 +# focus of this file is testing the LIMIT ... OFFSET ... clause
1.16 +# of SELECT statements.
1.17 +#
1.18 +# $Id: limit.test,v 1.32 2008/08/02 03:50:39 drh Exp $
1.19 +
1.20 +set testdir [file dirname $argv0]
1.21 +source $testdir/tester.tcl
1.22 +
1.23 +# Build some test data
1.24 +#
1.25 +execsql {
1.26 + CREATE TABLE t1(x int, y int);
1.27 + BEGIN;
1.28 +}
1.29 +for {set i 1} {$i<=32} {incr i} {
1.30 + for {set j 0} {(1<<$j)<$i} {incr j} {}
1.31 + execsql "INSERT INTO t1 VALUES([expr {32-$i}],[expr {10-$j}])"
1.32 +}
1.33 +execsql {
1.34 + COMMIT;
1.35 +}
1.36 +
1.37 +do_test limit-1.0 {
1.38 + execsql {SELECT count(*) FROM t1}
1.39 +} {32}
1.40 +do_test limit-1.1 {
1.41 + execsql {SELECT count(*) FROM t1 LIMIT 5}
1.42 +} {32}
1.43 +do_test limit-1.2.1 {
1.44 + execsql {SELECT x FROM t1 ORDER BY x LIMIT 5}
1.45 +} {0 1 2 3 4}
1.46 +do_test limit-1.2.2 {
1.47 + execsql {SELECT x FROM t1 ORDER BY x LIMIT 5 OFFSET 2}
1.48 +} {2 3 4 5 6}
1.49 +do_test limit-1.2.3 {
1.50 + execsql {SELECT x FROM t1 ORDER BY x+1 LIMIT 5 OFFSET -2}
1.51 +} {0 1 2 3 4}
1.52 +do_test limit-1.2.4 {
1.53 + execsql {SELECT x FROM t1 ORDER BY x+1 LIMIT 2, -5}
1.54 +} {2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31}
1.55 +do_test limit-1.2.5 {
1.56 + execsql {SELECT x FROM t1 ORDER BY x+1 LIMIT -2, 5}
1.57 +} {0 1 2 3 4}
1.58 +do_test limit-1.2.6 {
1.59 + execsql {SELECT x FROM t1 ORDER BY x+1 LIMIT -2, -5}
1.60 +} {0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31}
1.61 +do_test limit-1.2.7 {
1.62 + execsql {SELECT x FROM t1 ORDER BY x LIMIT 2, 5}
1.63 +} {2 3 4 5 6}
1.64 +do_test limit-1.3 {
1.65 + execsql {SELECT x FROM t1 ORDER BY x LIMIT 5 OFFSET 5}
1.66 +} {5 6 7 8 9}
1.67 +do_test limit-1.4.1 {
1.68 + execsql {SELECT x FROM t1 ORDER BY x LIMIT 50 OFFSET 30}
1.69 +} {30 31}
1.70 +do_test limit-1.4.2 {
1.71 + execsql {SELECT x FROM t1 ORDER BY x LIMIT 30, 50}
1.72 +} {30 31}
1.73 +do_test limit-1.5 {
1.74 + execsql {SELECT x FROM t1 ORDER BY x LIMIT 50 OFFSET 50}
1.75 +} {}
1.76 +do_test limit-1.6 {
1.77 + execsql {SELECT * FROM t1 AS a, t1 AS b ORDER BY a.x, b.x LIMIT 5}
1.78 +} {0 5 0 5 0 5 1 5 0 5 2 5 0 5 3 5 0 5 4 5}
1.79 +do_test limit-1.7 {
1.80 + execsql {SELECT * FROM t1 AS a, t1 AS b ORDER BY a.x, b.x LIMIT 5 OFFSET 32}
1.81 +} {1 5 0 5 1 5 1 5 1 5 2 5 1 5 3 5 1 5 4 5}
1.82 +
1.83 +ifcapable {view && subquery} {
1.84 + do_test limit-2.1 {
1.85 + execsql {
1.86 + CREATE VIEW v1 AS SELECT * FROM t1 LIMIT 2;
1.87 + SELECT count(*) FROM (SELECT * FROM v1);
1.88 + }
1.89 + } 2
1.90 +} ;# ifcapable view
1.91 +do_test limit-2.2 {
1.92 + execsql {
1.93 + CREATE TABLE t2 AS SELECT * FROM t1 LIMIT 2;
1.94 + SELECT count(*) FROM t2;
1.95 + }
1.96 +} 2
1.97 +ifcapable subquery {
1.98 + do_test limit-2.3 {
1.99 + execsql {
1.100 + SELECT count(*) FROM t1 WHERE rowid IN (SELECT rowid FROM t1 LIMIT 2);
1.101 + }
1.102 + } 2
1.103 +}
1.104 +
1.105 +ifcapable subquery {
1.106 + do_test limit-3.1 {
1.107 + execsql {
1.108 + SELECT z FROM (SELECT y*10+x AS z FROM t1 ORDER BY x LIMIT 10)
1.109 + ORDER BY z LIMIT 5;
1.110 + }
1.111 + } {50 51 52 53 54}
1.112 +}
1.113 +
1.114 +do_test limit-4.1 {
1.115 + ifcapable subquery {
1.116 + execsql {
1.117 + BEGIN;
1.118 + CREATE TABLE t3(x);
1.119 + INSERT INTO t3 SELECT x FROM t1 ORDER BY x LIMIT 10 OFFSET 1;
1.120 + INSERT INTO t3 SELECT x+(SELECT max(x) FROM t3) FROM t3;
1.121 + INSERT INTO t3 SELECT x+(SELECT max(x) FROM t3) FROM t3;
1.122 + INSERT INTO t3 SELECT x+(SELECT max(x) FROM t3) FROM t3;
1.123 + INSERT INTO t3 SELECT x+(SELECT max(x) FROM t3) FROM t3;
1.124 + INSERT INTO t3 SELECT x+(SELECT max(x) FROM t3) FROM t3;
1.125 + INSERT INTO t3 SELECT x+(SELECT max(x) FROM t3) FROM t3;
1.126 + INSERT INTO t3 SELECT x+(SELECT max(x) FROM t3) FROM t3;
1.127 + INSERT INTO t3 SELECT x+(SELECT max(x) FROM t3) FROM t3;
1.128 + INSERT INTO t3 SELECT x+(SELECT max(x) FROM t3) FROM t3;
1.129 + INSERT INTO t3 SELECT x+(SELECT max(x) FROM t3) FROM t3;
1.130 + END;
1.131 + SELECT count(*) FROM t3;
1.132 + }
1.133 + } else {
1.134 + execsql {
1.135 + BEGIN;
1.136 + CREATE TABLE t3(x);
1.137 + INSERT INTO t3 SELECT x FROM t1 ORDER BY x LIMIT 10 OFFSET 1;
1.138 + }
1.139 + for {set i 0} {$i<10} {incr i} {
1.140 + set max_x_t3 [execsql {SELECT max(x) FROM t3}]
1.141 + execsql "INSERT INTO t3 SELECT x+$max_x_t3 FROM t3;"
1.142 + }
1.143 + execsql {
1.144 + END;
1.145 + SELECT count(*) FROM t3;
1.146 + }
1.147 + }
1.148 +} {10240}
1.149 +do_test limit-4.2 {
1.150 + execsql {
1.151 + SELECT x FROM t3 LIMIT 2 OFFSET 10000
1.152 + }
1.153 +} {10001 10002}
1.154 +do_test limit-4.3 {
1.155 + execsql {
1.156 + CREATE TABLE t4 AS SELECT x,
1.157 + 'abcdefghijklmnopqrstuvwyxz ABCDEFGHIJKLMNOPQRSTUVWYXZ' || x ||
1.158 + 'abcdefghijklmnopqrstuvwyxz ABCDEFGHIJKLMNOPQRSTUVWYXZ' || x ||
1.159 + 'abcdefghijklmnopqrstuvwyxz ABCDEFGHIJKLMNOPQRSTUVWYXZ' || x ||
1.160 + 'abcdefghijklmnopqrstuvwyxz ABCDEFGHIJKLMNOPQRSTUVWYXZ' || x ||
1.161 + 'abcdefghijklmnopqrstuvwyxz ABCDEFGHIJKLMNOPQRSTUVWYXZ' || x AS y
1.162 + FROM t3 LIMIT 1000;
1.163 + SELECT x FROM t4 ORDER BY y DESC LIMIT 1 OFFSET 999;
1.164 + }
1.165 +} {1000}
1.166 +
1.167 +do_test limit-5.1 {
1.168 + execsql {
1.169 + CREATE TABLE t5(x,y);
1.170 + INSERT INTO t5 SELECT x-y, x+y FROM t1 WHERE x BETWEEN 10 AND 15
1.171 + ORDER BY x LIMIT 2;
1.172 + SELECT * FROM t5 ORDER BY x;
1.173 + }
1.174 +} {5 15 6 16}
1.175 +do_test limit-5.2 {
1.176 + execsql {
1.177 + DELETE FROM t5;
1.178 + INSERT INTO t5 SELECT x-y, x+y FROM t1 WHERE x BETWEEN 10 AND 15
1.179 + ORDER BY x DESC LIMIT 2;
1.180 + SELECT * FROM t5 ORDER BY x;
1.181 + }
1.182 +} {9 19 10 20}
1.183 +do_test limit-5.3 {
1.184 + execsql {
1.185 + DELETE FROM t5;
1.186 + INSERT INTO t5 SELECT x-y, x+y FROM t1 WHERE x ORDER BY x DESC LIMIT 31;
1.187 + SELECT * FROM t5 ORDER BY x LIMIT 2;
1.188 + }
1.189 +} {-4 6 -3 7}
1.190 +do_test limit-5.4 {
1.191 + execsql {
1.192 + SELECT * FROM t5 ORDER BY x DESC, y DESC LIMIT 2;
1.193 + }
1.194 +} {21 41 21 39}
1.195 +do_test limit-5.5 {
1.196 + execsql {
1.197 + DELETE FROM t5;
1.198 + INSERT INTO t5 SELECT a.x*100+b.x, a.y*100+b.y FROM t1 AS a, t1 AS b
1.199 + ORDER BY 1, 2 LIMIT 1000;
1.200 + SELECT count(*), sum(x), sum(y), min(x), max(x), min(y), max(y) FROM t5;
1.201 + }
1.202 +} {1000 1528204 593161 0 3107 505 1005}
1.203 +
1.204 +# There is some contraversy about whether LIMIT 0 should be the same as
1.205 +# no limit at all or if LIMIT 0 should result in zero output rows.
1.206 +#
1.207 +do_test limit-6.1 {
1.208 + execsql {
1.209 + BEGIN;
1.210 + CREATE TABLE t6(a);
1.211 + INSERT INTO t6 VALUES(1);
1.212 + INSERT INTO t6 VALUES(2);
1.213 + INSERT INTO t6 SELECT a+2 FROM t6;
1.214 + COMMIT;
1.215 + SELECT * FROM t6;
1.216 + }
1.217 +} {1 2 3 4}
1.218 +do_test limit-6.2 {
1.219 + execsql {
1.220 + SELECT * FROM t6 LIMIT -1 OFFSET -1;
1.221 + }
1.222 +} {1 2 3 4}
1.223 +do_test limit-6.3 {
1.224 + execsql {
1.225 + SELECT * FROM t6 LIMIT 2 OFFSET -123;
1.226 + }
1.227 +} {1 2}
1.228 +do_test limit-6.4 {
1.229 + execsql {
1.230 + SELECT * FROM t6 LIMIT -432 OFFSET 2;
1.231 + }
1.232 +} {3 4}
1.233 +do_test limit-6.5 {
1.234 + execsql {
1.235 + SELECT * FROM t6 LIMIT -1
1.236 + }
1.237 +} {1 2 3 4}
1.238 +do_test limit-6.6 {
1.239 + execsql {
1.240 + SELECT * FROM t6 LIMIT -1 OFFSET 1
1.241 + }
1.242 +} {2 3 4}
1.243 +do_test limit-6.7 {
1.244 + execsql {
1.245 + SELECT * FROM t6 LIMIT 0
1.246 + }
1.247 +} {}
1.248 +do_test limit-6.8 {
1.249 + execsql {
1.250 + SELECT * FROM t6 LIMIT 0 OFFSET 1
1.251 + }
1.252 +} {}
1.253 +
1.254 +# Make sure LIMIT works well with compound SELECT statements.
1.255 +# Ticket #393
1.256 +#
1.257 +ifcapable compound {
1.258 +do_test limit-7.1.1 {
1.259 + catchsql {
1.260 + SELECT x FROM t2 LIMIT 5 UNION ALL SELECT a FROM t6;
1.261 + }
1.262 +} {1 {LIMIT clause should come after UNION ALL not before}}
1.263 +do_test limit-7.1.2 {
1.264 + catchsql {
1.265 + SELECT x FROM t2 LIMIT 5 UNION SELECT a FROM t6;
1.266 + }
1.267 +} {1 {LIMIT clause should come after UNION not before}}
1.268 +do_test limit-7.1.3 {
1.269 + catchsql {
1.270 + SELECT x FROM t2 LIMIT 5 EXCEPT SELECT a FROM t6 LIMIT 3;
1.271 + }
1.272 +} {1 {LIMIT clause should come after EXCEPT not before}}
1.273 +do_test limit-7.1.4 {
1.274 + catchsql {
1.275 + SELECT x FROM t2 LIMIT 0,5 INTERSECT SELECT a FROM t6;
1.276 + }
1.277 +} {1 {LIMIT clause should come after INTERSECT not before}}
1.278 +do_test limit-7.2 {
1.279 + execsql {
1.280 + SELECT x FROM t2 UNION ALL SELECT a FROM t6 LIMIT 5;
1.281 + }
1.282 +} {31 30 1 2 3}
1.283 +do_test limit-7.3 {
1.284 + execsql {
1.285 + SELECT x FROM t2 UNION ALL SELECT a FROM t6 LIMIT 3 OFFSET 1;
1.286 + }
1.287 +} {30 1 2}
1.288 +do_test limit-7.4 {
1.289 + execsql {
1.290 + SELECT x FROM t2 UNION ALL SELECT a FROM t6 ORDER BY 1 LIMIT 3 OFFSET 1;
1.291 + }
1.292 +} {2 3 4}
1.293 +do_test limit-7.5 {
1.294 + execsql {
1.295 + SELECT x FROM t2 UNION SELECT x+2 FROM t2 LIMIT 2 OFFSET 1;
1.296 + }
1.297 +} {31 32}
1.298 +do_test limit-7.6 {
1.299 + execsql {
1.300 + SELECT x FROM t2 UNION SELECT x+2 FROM t2 ORDER BY 1 DESC LIMIT 2 OFFSET 1;
1.301 + }
1.302 +} {32 31}
1.303 +do_test limit-7.7 {
1.304 + execsql {
1.305 + SELECT a+9 FROM t6 EXCEPT SELECT y FROM t2 LIMIT 2;
1.306 + }
1.307 +} {11 12}
1.308 +do_test limit-7.8 {
1.309 + execsql {
1.310 + SELECT a+9 FROM t6 EXCEPT SELECT y FROM t2 ORDER BY 1 DESC LIMIT 2;
1.311 + }
1.312 +} {13 12}
1.313 +do_test limit-7.9 {
1.314 + execsql {
1.315 + SELECT a+26 FROM t6 INTERSECT SELECT x FROM t2 LIMIT 1;
1.316 + }
1.317 +} {30}
1.318 +do_test limit-7.10 {
1.319 + execsql {
1.320 + SELECT a+27 FROM t6 INTERSECT SELECT x FROM t2 LIMIT 1;
1.321 + }
1.322 +} {30}
1.323 +do_test limit-7.11 {
1.324 + execsql {
1.325 + SELECT a+27 FROM t6 INTERSECT SELECT x FROM t2 LIMIT 1 OFFSET 1;
1.326 + }
1.327 +} {31}
1.328 +do_test limit-7.12 {
1.329 + execsql {
1.330 + SELECT a+27 FROM t6 INTERSECT SELECT x FROM t2
1.331 + ORDER BY 1 DESC LIMIT 1 OFFSET 1;
1.332 + }
1.333 +} {30}
1.334 +} ;# ifcapable compound
1.335 +
1.336 +# Tests for limit in conjunction with distinct. The distinct should
1.337 +# occur before both the limit and the offset. Ticket #749.
1.338 +#
1.339 +do_test limit-8.1 {
1.340 + execsql {
1.341 + SELECT DISTINCT cast(round(x/100) as integer) FROM t3 LIMIT 5;
1.342 + }
1.343 +} {0 1 2 3 4}
1.344 +do_test limit-8.2 {
1.345 + execsql {
1.346 + SELECT DISTINCT cast(round(x/100) as integer) FROM t3 LIMIT 5 OFFSET 5;
1.347 + }
1.348 +} {5 6 7 8 9}
1.349 +do_test limit-8.3 {
1.350 + execsql {
1.351 + SELECT DISTINCT cast(round(x/100) as integer) FROM t3 LIMIT 5 OFFSET 25;
1.352 + }
1.353 +} {25 26 27 28 29}
1.354 +
1.355 +# Make sure limits on multiple subqueries work correctly.
1.356 +# Ticket #1035
1.357 +#
1.358 +ifcapable subquery {
1.359 + do_test limit-9.1 {
1.360 + execsql {
1.361 + SELECT * FROM (SELECT * FROM t6 LIMIT 3);
1.362 + }
1.363 + } {1 2 3}
1.364 +}
1.365 +do_test limit-9.2.1 {
1.366 + execsql {
1.367 + CREATE TABLE t7 AS SELECT * FROM t6;
1.368 + }
1.369 +} {}
1.370 +ifcapable subquery {
1.371 + do_test limit-9.2.2 {
1.372 + execsql {
1.373 + SELECT * FROM (SELECT * FROM t7 LIMIT 3);
1.374 + }
1.375 + } {1 2 3}
1.376 +}
1.377 +ifcapable compound {
1.378 + ifcapable subquery {
1.379 + do_test limit-9.3 {
1.380 + execsql {
1.381 + SELECT * FROM (SELECT * FROM t6 LIMIT 3)
1.382 + UNION
1.383 + SELECT * FROM (SELECT * FROM t7 LIMIT 3)
1.384 + ORDER BY 1
1.385 + }
1.386 + } {1 2 3}
1.387 + do_test limit-9.4 {
1.388 + execsql {
1.389 + SELECT * FROM (SELECT * FROM t6 LIMIT 3)
1.390 + UNION
1.391 + SELECT * FROM (SELECT * FROM t7 LIMIT 3)
1.392 + ORDER BY 1
1.393 + LIMIT 2
1.394 + }
1.395 + } {1 2}
1.396 + }
1.397 + do_test limit-9.5 {
1.398 + catchsql {
1.399 + SELECT * FROM t6 LIMIT 3
1.400 + UNION
1.401 + SELECT * FROM t7 LIMIT 3
1.402 + }
1.403 + } {1 {LIMIT clause should come after UNION not before}}
1.404 +}
1.405 +
1.406 +# Test LIMIT and OFFSET using SQL variables.
1.407 +do_test limit-10.1 {
1.408 + set limit 10
1.409 + db eval {
1.410 + SELECT x FROM t1 LIMIT :limit;
1.411 + }
1.412 +} {31 30 29 28 27 26 25 24 23 22}
1.413 +do_test limit-10.2 {
1.414 + set limit 5
1.415 + set offset 5
1.416 + db eval {
1.417 + SELECT x FROM t1 LIMIT :limit OFFSET :offset;
1.418 + }
1.419 +} {26 25 24 23 22}
1.420 +do_test limit-10.3 {
1.421 + set limit -1
1.422 + db eval {
1.423 + SELECT x FROM t1 WHERE x<10 LIMIT :limit;
1.424 + }
1.425 +} {9 8 7 6 5 4 3 2 1 0}
1.426 +do_test limit-10.4 {
1.427 + set limit 1.5
1.428 + set rc [catch {
1.429 + db eval {
1.430 + SELECT x FROM t1 WHERE x<10 LIMIT :limit;
1.431 + } } msg]
1.432 + list $rc $msg
1.433 +} {1 {datatype mismatch}}
1.434 +do_test limit-10.5 {
1.435 + set limit "hello world"
1.436 + set rc [catch {
1.437 + db eval {
1.438 + SELECT x FROM t1 WHERE x<10 LIMIT :limit;
1.439 + } } msg]
1.440 + list $rc $msg
1.441 +} {1 {datatype mismatch}}
1.442 +
1.443 +ifcapable subquery {
1.444 +do_test limit-11.1 {
1.445 + db eval {
1.446 + SELECT x FROM (SELECT x FROM t1 ORDER BY x LIMIT 0) ORDER BY x
1.447 + }
1.448 +} {}
1.449 +} ;# ifcapable subquery
1.450 +
1.451 +# Test error processing.
1.452 +#
1.453 +do_test limit-12.1 {
1.454 + catchsql {
1.455 + SELECT * FROM t1 LIMIT replace(1)
1.456 + }
1.457 +} {1 {wrong number of arguments to function replace()}}
1.458 +do_test limit-12.2 {
1.459 + catchsql {
1.460 + SELECT * FROM t1 LIMIT 5 OFFSET replace(1)
1.461 + }
1.462 +} {1 {wrong number of arguments to function replace()}}
1.463 +do_test limit-12.3 {
1.464 + catchsql {
1.465 + SELECT * FROM t1 LIMIT x
1.466 + }
1.467 +} {1 {no such column: x}}
1.468 +do_test limit-12.4 {
1.469 + catchsql {
1.470 + SELECT * FROM t1 LIMIT 1 OFFSET x
1.471 + }
1.472 +} {1 {no such column: x}}
1.473 +
1.474 +
1.475 +finish_test