1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/persistentdata/persistentstorage/sqlite3api/TEST/TclScript/select6.test Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,506 @@
1.4 +# 2001 September 15
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 SELECT statements that contain
1.16 +# subqueries in their FROM clause.
1.17 +#
1.18 +# $Id: select6.test,v 1.28 2008/08/20 16:35:10 drh Exp $
1.19 +
1.20 +set testdir [file dirname $argv0]
1.21 +source $testdir/tester.tcl
1.22 +
1.23 +# Omit this whole file if the library is build without subquery support.
1.24 +ifcapable !subquery {
1.25 + finish_test
1.26 + return
1.27 +}
1.28 +
1.29 +do_test select6-1.0 {
1.30 + execsql {
1.31 + BEGIN;
1.32 + CREATE TABLE t1(x, y);
1.33 + INSERT INTO t1 VALUES(1,1);
1.34 + INSERT INTO t1 VALUES(2,2);
1.35 + INSERT INTO t1 VALUES(3,2);
1.36 + INSERT INTO t1 VALUES(4,3);
1.37 + INSERT INTO t1 VALUES(5,3);
1.38 + INSERT INTO t1 VALUES(6,3);
1.39 + INSERT INTO t1 VALUES(7,3);
1.40 + INSERT INTO t1 VALUES(8,4);
1.41 + INSERT INTO t1 VALUES(9,4);
1.42 + INSERT INTO t1 VALUES(10,4);
1.43 + INSERT INTO t1 VALUES(11,4);
1.44 + INSERT INTO t1 VALUES(12,4);
1.45 + INSERT INTO t1 VALUES(13,4);
1.46 + INSERT INTO t1 VALUES(14,4);
1.47 + INSERT INTO t1 VALUES(15,4);
1.48 + INSERT INTO t1 VALUES(16,5);
1.49 + INSERT INTO t1 VALUES(17,5);
1.50 + INSERT INTO t1 VALUES(18,5);
1.51 + INSERT INTO t1 VALUES(19,5);
1.52 + INSERT INTO t1 VALUES(20,5);
1.53 + COMMIT;
1.54 + SELECT DISTINCT y FROM t1 ORDER BY y;
1.55 + }
1.56 +} {1 2 3 4 5}
1.57 +
1.58 +do_test select6-1.1 {
1.59 + execsql2 {SELECT * FROM (SELECT x, y FROM t1 WHERE x<2)}
1.60 +} {x 1 y 1}
1.61 +do_test select6-1.2 {
1.62 + execsql {SELECT count(*) FROM (SELECT y FROM t1)}
1.63 +} {20}
1.64 +do_test select6-1.3 {
1.65 + execsql {SELECT count(*) FROM (SELECT DISTINCT y FROM t1)}
1.66 +} {5}
1.67 +do_test select6-1.4 {
1.68 + execsql {SELECT count(*) FROM (SELECT DISTINCT * FROM (SELECT y FROM t1))}
1.69 +} {5}
1.70 +do_test select6-1.5 {
1.71 + execsql {SELECT count(*) FROM (SELECT * FROM (SELECT DISTINCT y FROM t1))}
1.72 +} {5}
1.73 +
1.74 +do_test select6-1.6 {
1.75 + execsql {
1.76 + SELECT *
1.77 + FROM (SELECT count(*),y FROM t1 GROUP BY y) AS a,
1.78 + (SELECT max(x),y FROM t1 GROUP BY y) as b
1.79 + WHERE a.y=b.y ORDER BY a.y
1.80 + }
1.81 +} {1 1 1 1 2 2 3 2 4 3 7 3 8 4 15 4 5 5 20 5}
1.82 +do_test select6-1.7 {
1.83 + execsql {
1.84 + SELECT a.y, a.[count(*)], [max(x)], [count(*)]
1.85 + FROM (SELECT count(*),y FROM t1 GROUP BY y) AS a,
1.86 + (SELECT max(x),y FROM t1 GROUP BY y) as b
1.87 + WHERE a.y=b.y ORDER BY a.y
1.88 + }
1.89 +} {1 1 1 1 2 2 3 2 3 4 7 4 4 8 15 8 5 5 20 5}
1.90 +do_test select6-1.8 {
1.91 + execsql {
1.92 + SELECT q, p, r
1.93 + FROM (SELECT count(*) as p , y as q FROM t1 GROUP BY y) AS a,
1.94 + (SELECT max(x) as r, y as s FROM t1 GROUP BY y) as b
1.95 + WHERE q=s ORDER BY s
1.96 + }
1.97 +} {1 1 1 2 2 3 3 4 7 4 8 15 5 5 20}
1.98 +do_test select6-1.9 {
1.99 + execsql {
1.100 + SELECT q, p, r, b.[min(x)+y]
1.101 + FROM (SELECT count(*) as p , y as q FROM t1 GROUP BY y) AS a,
1.102 + (SELECT max(x) as r, y as s, min(x)+y FROM t1 GROUP BY y) as b
1.103 + WHERE q=s ORDER BY s
1.104 + }
1.105 +} {1 1 1 2 2 2 3 4 3 4 7 7 4 8 15 12 5 5 20 21}
1.106 +
1.107 +do_test select6-2.0 {
1.108 + execsql {
1.109 + CREATE TABLE t2(a INTEGER PRIMARY KEY, b);
1.110 + INSERT INTO t2 SELECT * FROM t1;
1.111 + SELECT DISTINCT b FROM t2 ORDER BY b;
1.112 + }
1.113 +} {1 2 3 4 5}
1.114 +do_test select6-2.1 {
1.115 + execsql2 {SELECT * FROM (SELECT a, b FROM t2 WHERE a<2)}
1.116 +} {a 1 b 1}
1.117 +do_test select6-2.2 {
1.118 + execsql {SELECT count(*) FROM (SELECT b FROM t2)}
1.119 +} {20}
1.120 +do_test select6-2.3 {
1.121 + execsql {SELECT count(*) FROM (SELECT DISTINCT b FROM t2)}
1.122 +} {5}
1.123 +do_test select6-2.4 {
1.124 + execsql {SELECT count(*) FROM (SELECT DISTINCT * FROM (SELECT b FROM t2))}
1.125 +} {5}
1.126 +do_test select6-2.5 {
1.127 + execsql {SELECT count(*) FROM (SELECT * FROM (SELECT DISTINCT b FROM t2))}
1.128 +} {5}
1.129 +
1.130 +do_test select6-2.6 {
1.131 + execsql {
1.132 + SELECT *
1.133 + FROM (SELECT count(*),b FROM t2 GROUP BY b) AS a,
1.134 + (SELECT max(a),b FROM t2 GROUP BY b) as b
1.135 + WHERE a.b=b.b ORDER BY a.b
1.136 + }
1.137 +} {1 1 1 1 2 2 3 2 4 3 7 3 8 4 15 4 5 5 20 5}
1.138 +do_test select6-2.7 {
1.139 + execsql {
1.140 + SELECT a.b, a.[count(*)], [max(a)], [count(*)]
1.141 + FROM (SELECT count(*),b FROM t2 GROUP BY b) AS a,
1.142 + (SELECT max(a),b FROM t2 GROUP BY b) as b
1.143 + WHERE a.b=b.b ORDER BY a.b
1.144 + }
1.145 +} {1 1 1 1 2 2 3 2 3 4 7 4 4 8 15 8 5 5 20 5}
1.146 +do_test select6-2.8 {
1.147 + execsql {
1.148 + SELECT q, p, r
1.149 + FROM (SELECT count(*) as p , b as q FROM t2 GROUP BY b) AS a,
1.150 + (SELECT max(a) as r, b as s FROM t2 GROUP BY b) as b
1.151 + WHERE q=s ORDER BY s
1.152 + }
1.153 +} {1 1 1 2 2 3 3 4 7 4 8 15 5 5 20}
1.154 +do_test select6-2.9 {
1.155 + execsql {
1.156 + SELECT a.q, a.p, b.r
1.157 + FROM (SELECT count(*) as p , b as q FROM t2 GROUP BY q) AS a,
1.158 + (SELECT max(a) as r, b as s FROM t2 GROUP BY s) as b
1.159 + WHERE a.q=b.s ORDER BY a.q
1.160 + }
1.161 +} {1 1 1 2 2 3 3 4 7 4 8 15 5 5 20}
1.162 +
1.163 +do_test select6-3.1 {
1.164 + execsql2 {
1.165 + SELECT * FROM (SELECT * FROM (SELECT * FROM t1 WHERE x=3));
1.166 + }
1.167 +} {x 3 y 2}
1.168 +do_test select6-3.2 {
1.169 + execsql {
1.170 + SELECT * FROM
1.171 + (SELECT a.q, a.p, b.r
1.172 + FROM (SELECT count(*) as p , b as q FROM t2 GROUP BY q) AS a,
1.173 + (SELECT max(a) as r, b as s FROM t2 GROUP BY s) as b
1.174 + WHERE a.q=b.s ORDER BY a.q)
1.175 + ORDER BY "a.q"
1.176 + }
1.177 +} {1 1 1 2 2 3 3 4 7 4 8 15 5 5 20}
1.178 +do_test select6-3.3 {
1.179 + execsql {
1.180 + SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1)
1.181 + }
1.182 +} {10.5 3.7 14.2}
1.183 +do_test select6-3.4 {
1.184 + execsql {
1.185 + SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1 WHERE y=4)
1.186 + }
1.187 +} {11.5 4.0 15.5}
1.188 +do_test select6-3.5 {
1.189 + execsql {
1.190 + SELECT x,y,x+y FROM (SELECT avg(a) as 'x', avg(b) as 'y' FROM t2 WHERE a=4)
1.191 + }
1.192 +} {4.0 3.0 7.0}
1.193 +do_test select6-3.6 {
1.194 + execsql {
1.195 + SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1)
1.196 + WHERE a>10
1.197 + }
1.198 +} {10.5 3.7 14.2}
1.199 +do_test select6-3.7 {
1.200 + execsql {
1.201 + SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1)
1.202 + WHERE a<10
1.203 + }
1.204 +} {}
1.205 +do_test select6-3.8 {
1.206 + execsql {
1.207 + SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1 WHERE y=4)
1.208 + WHERE a>10
1.209 + }
1.210 +} {11.5 4.0 15.5}
1.211 +do_test select6-3.9 {
1.212 + execsql {
1.213 + SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1 WHERE y=4)
1.214 + WHERE a<10
1.215 + }
1.216 +} {}
1.217 +do_test select6-3.10 {
1.218 + execsql {
1.219 + SELECT a,b,a+b FROM (SELECT avg(x) as 'a', y as 'b' FROM t1 GROUP BY b)
1.220 + ORDER BY a
1.221 + }
1.222 +} {1.0 1 2.0 2.5 2 4.5 5.5 3 8.5 11.5 4 15.5 18.0 5 23.0}
1.223 +do_test select6-3.11 {
1.224 + execsql {
1.225 + SELECT a,b,a+b FROM
1.226 + (SELECT avg(x) as 'a', y as 'b' FROM t1 GROUP BY b)
1.227 + WHERE b<4 ORDER BY a
1.228 + }
1.229 +} {1.0 1 2.0 2.5 2 4.5 5.5 3 8.5}
1.230 +do_test select6-3.12 {
1.231 + execsql {
1.232 + SELECT a,b,a+b FROM
1.233 + (SELECT avg(x) as 'a', y as 'b' FROM t1 GROUP BY b HAVING a>1)
1.234 + WHERE b<4 ORDER BY a
1.235 + }
1.236 +} {2.5 2 4.5 5.5 3 8.5}
1.237 +do_test select6-3.13 {
1.238 + execsql {
1.239 + SELECT a,b,a+b FROM
1.240 + (SELECT avg(x) as 'a', y as 'b' FROM t1 GROUP BY b HAVING a>1)
1.241 + ORDER BY a
1.242 + }
1.243 +} {2.5 2 4.5 5.5 3 8.5 11.5 4 15.5 18.0 5 23.0}
1.244 +do_test select6-3.14 {
1.245 + execsql {
1.246 + SELECT [count(*)],y FROM (SELECT count(*), y FROM t1 GROUP BY y)
1.247 + ORDER BY [count(*)]
1.248 + }
1.249 +} {1 1 2 2 4 3 5 5 8 4}
1.250 +do_test select6-3.15 {
1.251 + execsql {
1.252 + SELECT [count(*)],y FROM (SELECT count(*), y FROM t1 GROUP BY y)
1.253 + ORDER BY y
1.254 + }
1.255 +} {1 1 2 2 4 3 8 4 5 5}
1.256 +
1.257 +do_test select6-4.1 {
1.258 + execsql {
1.259 + SELECT a,b,c FROM
1.260 + (SELECT x AS 'a', y AS 'b', x+y AS 'c' FROM t1 WHERE y=4)
1.261 + WHERE a<10 ORDER BY a;
1.262 + }
1.263 +} {8 4 12 9 4 13}
1.264 +do_test select6-4.2 {
1.265 + execsql {
1.266 + SELECT y FROM (SELECT DISTINCT y FROM t1) WHERE y<5 ORDER BY y
1.267 + }
1.268 +} {1 2 3 4}
1.269 +do_test select6-4.3 {
1.270 + execsql {
1.271 + SELECT DISTINCT y FROM (SELECT y FROM t1) WHERE y<5 ORDER BY y
1.272 + }
1.273 +} {1 2 3 4}
1.274 +do_test select6-4.4 {
1.275 + execsql {
1.276 + SELECT avg(y) FROM (SELECT DISTINCT y FROM t1) WHERE y<5 ORDER BY y
1.277 + }
1.278 +} {2.5}
1.279 +do_test select6-4.5 {
1.280 + execsql {
1.281 + SELECT avg(y) FROM (SELECT DISTINCT y FROM t1 WHERE y<5) ORDER BY y
1.282 + }
1.283 +} {2.5}
1.284 +
1.285 +do_test select6-5.1 {
1.286 + execsql {
1.287 + SELECT a,x,b FROM
1.288 + (SELECT x+3 AS 'a', x FROM t1 WHERE y=3) AS 'p',
1.289 + (SELECT x AS 'b' FROM t1 WHERE y=4) AS 'q'
1.290 + WHERE a=b
1.291 + ORDER BY a
1.292 + }
1.293 +} {8 5 8 9 6 9 10 7 10}
1.294 +do_test select6-5.2 {
1.295 + execsql {
1.296 + SELECT a,x,b FROM
1.297 + (SELECT x+3 AS 'a', x FROM t1 WHERE y=3),
1.298 + (SELECT x AS 'b' FROM t1 WHERE y=4)
1.299 + WHERE a=b
1.300 + ORDER BY a
1.301 + }
1.302 +} {8 5 8 9 6 9 10 7 10}
1.303 +
1.304 +# Tests of compound sub-selects
1.305 +#
1.306 +do_test select6-6.1 {
1.307 + execsql {
1.308 + DELETE FROM t1 WHERE x>4;
1.309 + SELECT * FROM t1
1.310 + }
1.311 +} {1 1 2 2 3 2 4 3}
1.312 +ifcapable compound {
1.313 + do_test select6-6.2 {
1.314 + execsql {
1.315 + SELECT * FROM (
1.316 + SELECT x AS 'a' FROM t1 UNION ALL SELECT x+10 AS 'a' FROM t1
1.317 + ) ORDER BY a;
1.318 + }
1.319 + } {1 2 3 4 11 12 13 14}
1.320 + do_test select6-6.3 {
1.321 + execsql {
1.322 + SELECT * FROM (
1.323 + SELECT x AS 'a' FROM t1 UNION ALL SELECT x+1 AS 'a' FROM t1
1.324 + ) ORDER BY a;
1.325 + }
1.326 + } {1 2 2 3 3 4 4 5}
1.327 + do_test select6-6.4 {
1.328 + execsql {
1.329 + SELECT * FROM (
1.330 + SELECT x AS 'a' FROM t1 UNION SELECT x+1 AS 'a' FROM t1
1.331 + ) ORDER BY a;
1.332 + }
1.333 + } {1 2 3 4 5}
1.334 + do_test select6-6.5 {
1.335 + execsql {
1.336 + SELECT * FROM (
1.337 + SELECT x AS 'a' FROM t1 INTERSECT SELECT x+1 AS 'a' FROM t1
1.338 + ) ORDER BY a;
1.339 + }
1.340 + } {2 3 4}
1.341 + do_test select6-6.6 {
1.342 + execsql {
1.343 + SELECT * FROM (
1.344 + SELECT x AS 'a' FROM t1 EXCEPT SELECT x*2 AS 'a' FROM t1
1.345 + ) ORDER BY a;
1.346 + }
1.347 + } {1 3}
1.348 +} ;# ifcapable compound
1.349 +
1.350 +# Subselects with no FROM clause
1.351 +#
1.352 +do_test select6-7.1 {
1.353 + execsql {
1.354 + SELECT * FROM (SELECT 1)
1.355 + }
1.356 +} {1}
1.357 +do_test select6-7.2 {
1.358 + execsql {
1.359 + SELECT c,b,a,* FROM (SELECT 1 AS 'a', 2 AS 'b', 'abc' AS 'c')
1.360 + }
1.361 +} {abc 2 1 1 2 abc}
1.362 +do_test select6-7.3 {
1.363 + execsql {
1.364 + SELECT c,b,a,* FROM (SELECT 1 AS 'a', 2 AS 'b', 'abc' AS 'c' WHERE 0)
1.365 + }
1.366 +} {}
1.367 +do_test select6-7.4 {
1.368 + execsql2 {
1.369 + SELECT c,b,a,* FROM (SELECT 1 AS 'a', 2 AS 'b', 'abc' AS 'c' WHERE 1)
1.370 + }
1.371 +} {c abc b 2 a 1 a 1 b 2 c abc}
1.372 +
1.373 +# The remaining tests in this file depend on the EXPLAIN keyword.
1.374 +# Skip these tests if EXPLAIN is disabled in the current build.
1.375 +#
1.376 +ifcapable {!explain} {
1.377 + finish_test
1.378 + return
1.379 +}
1.380 +
1.381 +# The following procedure compiles the SQL given as an argument and returns
1.382 +# TRUE if that SQL uses any transient tables and returns FALSE if no
1.383 +# transient tables are used. This is used to make sure that the
1.384 +# sqliteFlattenSubquery() routine in select.c is doing its job.
1.385 +#
1.386 +proc is_flat {sql} {
1.387 + return [expr 0>[lsearch [execsql "EXPLAIN $sql"] OpenEphemeral]]
1.388 +}
1.389 +
1.390 +# Check that the flattener works correctly for deeply nested subqueries
1.391 +# involving joins.
1.392 +#
1.393 +do_test select6-8.1 {
1.394 + execsql {
1.395 + BEGIN;
1.396 + CREATE TABLE t3(p,q);
1.397 + INSERT INTO t3 VALUES(1,11);
1.398 + INSERT INTO t3 VALUES(2,22);
1.399 + CREATE TABLE t4(q,r);
1.400 + INSERT INTO t4 VALUES(11,111);
1.401 + INSERT INTO t4 VALUES(22,222);
1.402 + COMMIT;
1.403 + SELECT * FROM t3 NATURAL JOIN t4;
1.404 + }
1.405 +} {1 11 111 2 22 222}
1.406 +do_test select6-8.2 {
1.407 + execsql {
1.408 + SELECT y, p, q, r FROM
1.409 + (SELECT t1.y AS y, t2.b AS b FROM t1, t2 WHERE t1.x=t2.a) AS m,
1.410 + (SELECT t3.p AS p, t3.q AS q, t4.r AS r FROM t3 NATURAL JOIN t4) as n
1.411 + WHERE y=p
1.412 + }
1.413 +} {1 1 11 111 2 2 22 222 2 2 22 222}
1.414 +# If view support is omitted from the build, then so is the query
1.415 +# "flattener". So omit this test and test select6-8.6 in that case.
1.416 +ifcapable view {
1.417 +do_test select6-8.3 {
1.418 + is_flat {
1.419 + SELECT y, p, q, r FROM
1.420 + (SELECT t1.y AS y, t2.b AS b FROM t1, t2 WHERE t1.x=t2.a) AS m,
1.421 + (SELECT t3.p AS p, t3.q AS q, t4.r AS r FROM t3 NATURAL JOIN t4) as n
1.422 + WHERE y=p
1.423 + }
1.424 +} {1}
1.425 +} ;# ifcapable view
1.426 +do_test select6-8.4 {
1.427 + execsql {
1.428 + SELECT DISTINCT y, p, q, r FROM
1.429 + (SELECT t1.y AS y, t2.b AS b FROM t1, t2 WHERE t1.x=t2.a) AS m,
1.430 + (SELECT t3.p AS p, t3.q AS q, t4.r AS r FROM t3 NATURAL JOIN t4) as n
1.431 + WHERE y=p
1.432 + }
1.433 +} {1 1 11 111 2 2 22 222}
1.434 +do_test select6-8.5 {
1.435 + execsql {
1.436 + SELECT * FROM
1.437 + (SELECT y, p, q, r FROM
1.438 + (SELECT t1.y AS y, t2.b AS b FROM t1, t2 WHERE t1.x=t2.a) AS m,
1.439 + (SELECT t3.p AS p, t3.q AS q, t4.r AS r FROM t3 NATURAL JOIN t4) as n
1.440 + WHERE y=p) AS e,
1.441 + (SELECT r AS z FROM t4 WHERE q=11) AS f
1.442 + WHERE e.r=f.z
1.443 + }
1.444 +} {1 1 11 111 111}
1.445 +ifcapable view {
1.446 +do_test select6-8.6 {
1.447 + is_flat {
1.448 + SELECT * FROM
1.449 + (SELECT y, p, q, r FROM
1.450 + (SELECT t1.y AS y, t2.b AS b FROM t1, t2 WHERE t1.x=t2.a) AS m,
1.451 + (SELECT t3.p AS p, t3.q AS q, t4.r AS r FROM t3 NATURAL JOIN t4) as n
1.452 + WHERE y=p) AS e,
1.453 + (SELECT r AS z FROM t4 WHERE q=11) AS f
1.454 + WHERE e.r=f.z
1.455 + }
1.456 +} {1}
1.457 +} ;# ifcapable view
1.458 +
1.459 +# Ticket #1634
1.460 +#
1.461 +do_test select6-9.1 {
1.462 + execsql {
1.463 + SELECT a.x, b.x FROM t1 AS a, (SELECT x FROM t1 LIMIT 2) AS b
1.464 + }
1.465 +} {1 1 1 2 2 1 2 2 3 1 3 2 4 1 4 2}
1.466 +do_test select6-9.2 {
1.467 + execsql {
1.468 + SELECT x FROM (SELECT x FROM t1 LIMIT 2);
1.469 + }
1.470 +} {1 2}
1.471 +do_test select6-9.3 {
1.472 + execsql {
1.473 + SELECT x FROM (SELECT x FROM t1 LIMIT 2 OFFSET 1);
1.474 + }
1.475 +} {2 3}
1.476 +do_test select6-9.4 {
1.477 + execsql {
1.478 + SELECT x FROM (SELECT x FROM t1) LIMIT 2;
1.479 + }
1.480 +} {1 2}
1.481 +do_test select6-9.5 {
1.482 + execsql {
1.483 + SELECT x FROM (SELECT x FROM t1) LIMIT 2 OFFSET 1;
1.484 + }
1.485 +} {2 3}
1.486 +do_test select6-9.6 {
1.487 + execsql {
1.488 + SELECT x FROM (SELECT x FROM t1 LIMIT 2) LIMIT 3;
1.489 + }
1.490 +} {1 2}
1.491 +do_test select6-9.7 {
1.492 + execsql {
1.493 + SELECT x FROM (SELECT x FROM t1 LIMIT -1) LIMIT 3;
1.494 + }
1.495 +} {1 2 3}
1.496 +do_test select6-9.8 {
1.497 + execsql {
1.498 + SELECT x FROM (SELECT x FROM t1 LIMIT -1);
1.499 + }
1.500 +} {1 2 3 4}
1.501 +do_test select6-9.9 {
1.502 + execsql {
1.503 + SELECT x FROM (SELECT x FROM t1 LIMIT -1 OFFSET 1);
1.504 + }
1.505 +} {2 3 4}
1.506 +
1.507 +
1.508 +
1.509 +finish_test