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1# 2001 September 23
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 stressing the library by putting large amounts
13# of data in a single row of a table.
14#
15# $Id: bigrow.test,v 1.5 2004/08/07 23:54:48 drh Exp $
16
17set testdir [file dirname $argv0]
18source $testdir/tester.tcl
19
20# Make a big string that we can use for test data
21#
22do_test bigrow-1.0 {
23 set ::bigstr {}
24 for {set i 1} {$i<=9999} {incr i} {
25 set sep [string index "abcdefghijklmnopqrstuvwxyz" [expr {$i%26}]]
26 append ::bigstr "$sep [format %04d $i] "
27 }
28 string length $::bigstr
29} {69993}
30
31# Make a table into which we can insert some but records.
32#
33do_test bigrow-1.1 {
34 execsql {
35 CREATE TABLE t1(a text, b text, c text);
36 SELECT name FROM sqlite_master
37 WHERE type='table' OR type='index'
38 ORDER BY name
39 }
40} {t1}
41
42do_test bigrow-1.2 {
43 set ::big1 [string range $::bigstr 0 65519]
44 set sql "INSERT INTO t1 VALUES('abc',"
45 append sql "'$::big1', 'xyz');"
46 execsql $sql
47 execsql {SELECT a, c FROM t1}
48} {abc xyz}
49do_test bigrow-1.3 {
50 execsql {SELECT b FROM t1}
51} [list $::big1]
52do_test bigrow-1.4 {
53 set ::big2 [string range $::bigstr 0 65520]
54 set sql "INSERT INTO t1 VALUES('abc2',"
55 append sql "'$::big2', 'xyz2');"
56 set r [catch {execsql $sql} msg]
57 lappend r $msg
58} {0 {}}
59do_test bigrow-1.4.1 {
60 execsql {SELECT b FROM t1 ORDER BY c}
61} [list $::big1 $::big2]
62do_test bigrow-1.4.2 {
63 execsql {SELECT c FROM t1 ORDER BY c}
64} {xyz xyz2}
65do_test bigrow-1.4.3 {
66 execsql {DELETE FROM t1 WHERE a='abc2'}
67 execsql {SELECT c FROM t1}
68} {xyz}
69
70do_test bigrow-1.5 {
71 execsql {
72 UPDATE t1 SET a=b, b=a;
73 SELECT b,c FROM t1
74 }
75} {abc xyz}
76do_test bigrow-1.6 {
77 execsql {
78 SELECT * FROM t1
79 }
80} [list $::big1 abc xyz]
81do_test bigrow-1.7 {
82 execsql {
83 INSERT INTO t1 VALUES('1','2','3');
84 INSERT INTO t1 VALUES('A','B','C');
85 SELECT b FROM t1 WHERE a=='1';
86 }
87} {2}
88do_test bigrow-1.8 {
89 execsql "SELECT b FROM t1 WHERE a=='$::big1'"
90} {abc}
91do_test bigrow-1.9 {
92 execsql "SELECT b FROM t1 WHERE a!='$::big1' ORDER BY a"
93} {2 B}
94
95# Try doing some indexing on big columns
96#
97do_test bigrow-2.1 {
98 execsql {
99 CREATE INDEX i1 ON t1(a)
100 }
101 execsql "SELECT b FROM t1 WHERE a=='$::big1'"
102} {abc}
103do_test bigrow-2.2 {
104 execsql {
105 UPDATE t1 SET a=b, b=a
106 }
107 execsql "SELECT b FROM t1 WHERE a=='abc'"
108} [list $::big1]
109do_test bigrow-2.3 {
110 execsql {
111 UPDATE t1 SET a=b, b=a
112 }
113 execsql "SELECT b FROM t1 WHERE a=='$::big1'"
114} {abc}
115catch {unset ::bigstr}
116catch {unset ::big1}
117catch {unset ::big2}
118
119# Mosts of the tests above were created back when rows were limited in
120# size to 64K. Now rows can be much bigger. Test that logic. Also
121# make sure things work correctly at the transition boundries between
122# row sizes of 256 to 257 bytes and from 65536 to 65537 bytes.
123#
124# We begin by testing the 256..257 transition.
125#
126do_test bigrow-3.1 {
127 execsql {
128 DELETE FROM t1;
129 INSERT INTO t1(a,b,c) VALUES('one','abcdefghijklmnopqrstuvwxyz0123','hi');
130 }
131 execsql {SELECT a,length(b),c FROM t1}
132} {one 30 hi}
133do_test bigrow-3.2 {
134 execsql {
135 UPDATE t1 SET b=b||b;
136 UPDATE t1 SET b=b||b;
137 UPDATE t1 SET b=b||b;
138 }
139 execsql {SELECT a,length(b),c FROM t1}
140} {one 240 hi}
141for {set i 1} {$i<10} {incr i} {
142 do_test bigrow-3.3.$i {
143 execsql "UPDATE t1 SET b=b||'$i'"
144 execsql {SELECT a,length(b),c FROM t1}
145 } "one [expr {240+$i}] hi"
146}
147
148# Now test the 65536..65537 row-size transition.
149#
150do_test bigrow-4.1 {
151 execsql {
152 DELETE FROM t1;
153 INSERT INTO t1(a,b,c) VALUES('one','abcdefghijklmnopqrstuvwxyz0123','hi');
154 }
155 execsql {SELECT a,length(b),c FROM t1}
156} {one 30 hi}
157do_test bigrow-4.2 {
158 execsql {
159 UPDATE t1 SET b=b||b;
160 UPDATE t1 SET b=b||b;
161 UPDATE t1 SET b=b||b;
162 UPDATE t1 SET b=b||b;
163 UPDATE t1 SET b=b||b;
164 UPDATE t1 SET b=b||b;
165 UPDATE t1 SET b=b||b;
166 UPDATE t1 SET b=b||b;
167 UPDATE t1 SET b=b||b;
168 UPDATE t1 SET b=b||b;
169 UPDATE t1 SET b=b||b;
170 UPDATE t1 SET b=b||b;
171 }
172 execsql {SELECT a,length(b),c FROM t1}
173} {one 122880 hi}
174do_test bigrow-4.3 {
175 execsql {
176 UPDATE t1 SET b=substr(b,1,65515)
177 }
178 execsql {SELECT a,length(b),c FROM t1}
179} {one 65515 hi}
180for {set i 1} {$i<10} {incr i} {
181 do_test bigrow-4.4.$i {
182 execsql "UPDATE t1 SET b=b||'$i'"
183 execsql {SELECT a,length(b),c FROM t1}
184 } "one [expr {65515+$i}] hi"
185}
186
187# Check to make sure the library recovers safely if a row contains
188# too much data.
189#
190do_test bigrow-5.1 {
191 execsql {
192 DELETE FROM t1;
193 INSERT INTO t1(a,b,c) VALUES('one','abcdefghijklmnopqrstuvwxyz0123','hi');
194 }
195 execsql {SELECT a,length(b),c FROM t1}
196} {one 30 hi}
197set i 1
198for {set sz 60} {$sz<1048560} {incr sz $sz} {
199 do_test bigrow-5.2.$i {
200 execsql {
201 UPDATE t1 SET b=b||b;
202 SELECT a,length(b),c FROM t1;
203 }
204 } "one $sz hi"
205 incr i
206}
207do_test bigrow-5.3 {
208 catchsql {UPDATE t1 SET b=b||b}
209} {0 {}}
210do_test bigrow-5.4 {
211 execsql {SELECT length(b) FROM t1}
212} 1966080
213do_test bigrow-5.5 {
214 catchsql {UPDATE t1 SET b=b||b}
215} {0 {}}
216do_test bigrow-5.6 {
217 execsql {SELECT length(b) FROM t1}
218} 3932160
219do_test bigrow-5.99 {
220 execsql {DROP TABLE t1}
221} {}
222
223finish_test