3 # The author disclaims copyright to this source code. In place of
4 # a legal notice, here is a blessing:
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.
10 #***********************************************************************
11 # This file implements regression tests for SQLite library. The
12 # focus of this file is testing the LIMIT ... OFFSET ... clause
13 # of UPDATE and DELETE statements.
15 # $Id: wherelimit.test,v 1.2 2008/10/10 18:25:46 shane Exp $
17 set testdir [file dirname $argv0]
18 source $testdir/tester.tcl
20 proc create_test_data {size} {
21 # Build some test data
24 DROP TABLE IF EXISTS t1;
25 CREATE TABLE t1(x int, y int);
28 for {set i 1} {$i<=$size} {incr i} {
29 for {set j 1} {$j<=$size} {incr j} {
30 execsql "INSERT INTO t1 VALUES([expr {$i}],[expr {$j}])"
39 ifcapable {update_delete_limit} {
41 execsql { CREATE TABLE t1(x, y) }
43 # check syntax error support
44 do_test wherelimit-0.1 {
45 catchsql {DELETE FROM t1 ORDER BY x}
46 } {1 {ORDER BY without LIMIT on DELETE}}
47 do_test wherelimit-0.2 {
48 catchsql {DELETE FROM t1 WHERE x=1 ORDER BY x}
49 } {1 {ORDER BY without LIMIT on DELETE}}
50 do_test wherelimit-0.3 {
51 catchsql {UPDATE t1 SET y=1 WHERE x=1 ORDER BY x}
52 } {1 {ORDER BY without LIMIT on UPDATE}}
54 execsql { DROP TABLE t1 }
56 # no AS on table sources
57 do_test wherelimit-0.4 {
58 catchsql {DELETE FROM t1 AS a WHERE x=1}
59 } {1 {near "AS": syntax error}}
60 do_test wherelimit-0.5 {
61 catchsql {UPDATE t1 AS a SET y=1 WHERE x=1}
62 } {1 {near "AS": syntax error}}
65 do_test wherelimit-0.6 {
66 catchsql {DELETE FROM t1 WHERE x=1 OFFSET 2}
67 } {1 {near "OFFSET": syntax error}}
68 do_test wherelimit-0.7 {
69 catchsql {UPDATE t1 SET y=1 WHERE x=1 OFFSET 2}
70 } {1 {near "OFFSET": syntax error}}
73 # check deletes w/o where clauses but with limit/offsets
75 do_test wherelimit-1.0 {
76 execsql {SELECT count(*) FROM t1}
78 do_test wherelimit-1.1 {
79 execsql {DELETE FROM t1}
80 execsql {SELECT count(*) FROM t1}
83 do_test wherelimit-1.2 {
84 execsql {DELETE FROM t1 LIMIT 5}
85 execsql {SELECT count(*) FROM t1}
87 do_test wherelimit-1.3 {
89 execsql {DELETE FROM t1 ORDER BY x LIMIT 5}
90 execsql {SELECT count(*) FROM t1}
92 do_test wherelimit-1.4 {
94 execsql {DELETE FROM t1 ORDER BY x LIMIT 5 OFFSET 2}
95 execsql {SELECT count(*) FROM t1}
97 do_test wherelimit-1.5 {
99 execsql {DELETE FROM t1 ORDER BY x LIMIT 5 OFFSET -2}
100 execsql {SELECT count(*) FROM t1}
102 do_test wherelimit-1.6 {
103 # limit -5 (no limit), offset 2
104 execsql {DELETE FROM t1 ORDER BY x LIMIT 2, -5}
105 execsql {SELECT count(*) FROM t1}
107 do_test wherelimit-1.7 {
108 # limit 5, offset -2 (no offset)
109 execsql {DELETE FROM t1 ORDER BY x LIMIT -2, 5}
110 execsql {SELECT count(*) FROM t1}
113 do_test wherelimit-1.8 {
114 # limit -5 (no limit), offset -2 (no offset)
115 execsql {DELETE FROM t1 ORDER BY x LIMIT -2, -5}
116 execsql {SELECT count(*) FROM t1}
119 do_test wherelimit-1.9 {
121 execsql {DELETE FROM t1 ORDER BY x LIMIT 2, 5}
122 execsql {SELECT count(*) FROM t1}
124 do_test wherelimit-1.10 {
126 execsql {DELETE FROM t1 ORDER BY x LIMIT 5 OFFSET 5}
127 execsql {SELECT count(*) FROM t1}
129 do_test wherelimit-1.11 {
130 # limit 50, offset 30
131 execsql {DELETE FROM t1 ORDER BY x LIMIT 50 OFFSET 30}
132 execsql {SELECT count(*) FROM t1}
134 do_test wherelimit-1.12 {
135 # limit 50, offset 30
136 execsql {DELETE FROM t1 ORDER BY x LIMIT 30, 50}
137 execsql {SELECT count(*) FROM t1}
139 do_test wherelimit-1.13 {
140 execsql {DELETE FROM t1 ORDER BY x LIMIT 50 OFFSET 50}
141 execsql {SELECT count(*) FROM t1}
146 do_test wherelimit-2.0 {
147 execsql {SELECT count(*) FROM t1}
149 do_test wherelimit-2.1 {
150 execsql {DELETE FROM t1 WHERE x=1}
151 execsql {SELECT count(*) FROM t1}
154 do_test wherelimit-2.2 {
155 execsql {DELETE FROM t1 WHERE x=1 LIMIT 5}
156 execsql {SELECT count(*) FROM t1}
158 do_test wherelimit-2.3 {
160 execsql {DELETE FROM t1 WHERE x=1 ORDER BY x LIMIT 5}
161 execsql {SELECT count(*) FROM t1}
163 do_test wherelimit-2.4 {
165 execsql {DELETE FROM t1 WHERE x=2 ORDER BY x LIMIT 5 OFFSET 2}
166 execsql {SELECT count(*) FROM t1}
168 do_test wherelimit-2.5 {
170 execsql {DELETE FROM t1 WHERE x=2 ORDER BY x LIMIT 5 OFFSET -2}
171 execsql {SELECT count(*) FROM t1}
173 do_test wherelimit-2.6 {
174 # limit -5 (no limit), offset 2
175 execsql {DELETE FROM t1 WHERE x=3 ORDER BY x LIMIT 2, -5}
176 execsql {SELECT count(*) FROM t1}
178 do_test wherelimit-2.7 {
179 # limit 5, offset -2 (no offset)
180 execsql {DELETE FROM t1 WHERE x=3 ORDER BY x LIMIT -2, 5}
181 execsql {SELECT count(*) FROM t1}
183 do_test wherelimit-2.8 {
184 # limit -5 (no limit), offset -2 (no offset)
185 execsql {DELETE FROM t1 WHERE x=4 ORDER BY x LIMIT -2, -5}
186 execsql {SELECT count(*) FROM t1}
189 do_test wherelimit-2.9 {
191 execsql {DELETE FROM t1 WHERE x=5 ORDER BY x LIMIT 2, 5}
192 execsql {SELECT count(*) FROM t1}
194 do_test wherelimit-2.10 {
196 execsql {DELETE FROM t1 WHERE x=6 ORDER BY x LIMIT 5 OFFSET 5}
197 execsql {SELECT count(*) FROM t1}
199 do_test wherelimit-2.11 {
200 # limit 50, offset 30
201 execsql {DELETE FROM t1 WHERE x=1 ORDER BY x LIMIT 50 OFFSET 30}
202 execsql {SELECT count(*) FROM t1}
204 do_test wherelimit-2.12 {
205 # limit 50, offset 30
206 execsql {DELETE FROM t1 WHERE x=2 ORDER BY x LIMIT 30, 50}
207 execsql {SELECT count(*) FROM t1}
209 do_test wherelimit-2.13 {
210 execsql {DELETE FROM t1 WHERE x=3 ORDER BY x LIMIT 50 OFFSET 50}
211 execsql {SELECT count(*) FROM t1}
216 do_test wherelimit-3.0 {
217 execsql {SELECT count(*) FROM t1}
219 do_test wherelimit-3.1 {
220 execsql {UPDATE t1 SET y=1 WHERE x=1}
221 execsql {SELECT count(*) FROM t1 WHERE y=1}
224 do_test wherelimit-3.2 {
225 execsql {UPDATE t1 SET y=1 WHERE x=1 LIMIT 5}
226 execsql {SELECT count(*) FROM t1 WHERE y=1}
228 do_test wherelimit-3.3 {
230 execsql {UPDATE t1 SET y=2 WHERE x=2 ORDER BY x LIMIT 5}
231 execsql {SELECT count(*) FROM t1 WHERE y=2}
234 do_test wherelimit-3.4 {
236 execsql {UPDATE t1 SET y=2 WHERE x=2 ORDER BY x LIMIT 5 OFFSET 2}
237 execsql {SELECT count(*) FROM t1 WHERE y=1}
239 do_test wherelimit-3.5 {
241 execsql {UPDATE t1 SET y=2 WHERE x=2 ORDER BY x LIMIT 5 OFFSET -2}
242 execsql {SELECT count(*) FROM t1 WHERE y=1}
244 do_test wherelimit-3.6 {
245 # limit -5 (no limit), offset 2
246 execsql {UPDATE t1 SET y=3 WHERE x=3 ORDER BY x LIMIT 2, -5}
247 execsql {SELECT count(*) FROM t1 WHERE y=3}
249 do_test wherelimit-3.7 {
250 # limit 5, offset -2 (no offset)
251 execsql {UPDATE t1 SET y=3 WHERE x=3 ORDER BY x LIMIT -2, 5}
252 execsql {SELECT count(*) FROM t1 WHERE y=3}
255 do_test wherelimit-3.8 {
256 # limit -5 (no limit), offset -2 (no offset)
257 execsql {UPDATE t1 SET y=4 WHERE x=4 ORDER BY x LIMIT -2, -5}
258 execsql {SELECT count(*) FROM t1 WHERE y=4}
261 do_test wherelimit-3.9 {
263 execsql {UPDATE t1 SET y=4 WHERE x=5 ORDER BY x LIMIT 2, 5}
264 execsql {SELECT count(*) FROM t1 WHERE y=4}
266 do_test wherelimit-3.10 {
268 execsql {UPDATE t1 SET y=4 WHERE x=6 ORDER BY x LIMIT 5 OFFSET 5}
269 execsql {SELECT count(*) FROM t1 WHERE y=1}
271 do_test wherelimit-3.11 {
272 # limit 50, offset 30
273 execsql {UPDATE t1 SET y=1 WHERE x=1 ORDER BY x LIMIT 50 OFFSET 30}
274 execsql {SELECT count(*) FROM t1 WHERE y=1}
276 do_test wherelimit-3.12 {
277 # limit 50, offset 30
278 execsql {UPDATE t1 SET y=1 WHERE x=2 ORDER BY x LIMIT 30, 50}
279 execsql {SELECT count(*) FROM t1 WHERE y=1}
281 do_test wherelimit-3.13 {
282 execsql {UPDATE t1 SET y=1 WHERE x=3 ORDER BY x LIMIT 50 OFFSET 50}
283 execsql {SELECT count(*) FROM t1 WHERE y=1}
286 # Cannot use a LIMIT for UPDATE or DELETE against a WITHOUT ROWID table
287 # or a VIEW. (We should fix this someday).
291 do_execsql_test wherelimit-4.1 {
292 CREATE TABLE t1(a int);
293 INSERT INTO t1 VALUES(1);
294 INSERT INTO t1 VALUES(2);
295 INSERT INTO t1 VALUES(3);
296 CREATE TABLE t2(a int);
297 INSERT INTO t2 SELECT a+100 FROM t1;
298 CREATE VIEW tv(r,a) AS
299 SELECT rowid, a FROM t2 UNION ALL SELECT rowid, a FROM t1;
300 CREATE TRIGGER tv_del INSTEAD OF DELETE ON tv
302 DELETE FROM t1 WHERE rowid=old.r;
303 DELETE FROM t2 WHERE rowid=old.r;
306 do_catchsql_test wherelimit-4.2 {
307 DELETE FROM tv WHERE 1 LIMIT 2;
309 do_catchsql_test wherelimit-4.3 {
310 DELETE FROM tv WHERE 1 ORDER BY a LIMIT 2;
312 do_execsql_test wherelimit-4.10 {
313 CREATE TABLE t3(a,b,c,d TEXT, PRIMARY KEY(a,b)) WITHOUT ROWID;
314 INSERT INTO t3(a,b,c,d) VALUES(1,2,3,4),(5,6,7,8),(9,10,11,12);
316 do_catchsql_test wherelimit-4.11 {
317 DELETE FROM t3 WHERE a=5 LIMIT 2;
319 do_execsql_test wherelimit-4.12 {
320 SELECT a,b,c,d FROM t3 ORDER BY 1;
321 } {1 2 3 4 9 10 11 12}