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1 # 2015-01-05 | |
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 # | |
12 # This file verifies that INSERT operations with a very large number of | |
13 # VALUE terms works and does not hit the SQLITE_LIMIT_COMPOUND_SELECT limit. | |
14 # | |
15 | |
16 set testdir [file dirname $argv0] | |
17 source $testdir/tester.tcl | |
18 set testprefix selectG | |
19 | |
20 # Do an INSERT with a VALUES clause that contains 100,000 entries. Verify | |
21 # that this insert happens quickly (in less than 10 seconds). Actually, the | |
22 # insert will normally happen in less than 0.5 seconds on a workstation, but | |
23 # we allow plenty of overhead for slower machines. The speed test checks | |
24 # for an O(N*N) inefficiency that was once in the code and that would make | |
25 # the insert run for over a minute. | |
26 # | |
27 do_test 100 { | |
28 set sql "CREATE TABLE t1(x);\nINSERT INTO t1(x) VALUES" | |
29 for {set i 1} {$i<100000} {incr i} { | |
30 append sql "($i)," | |
31 } | |
32 append sql "($i);" | |
33 set microsec [lindex [time {db eval $sql}] 0] | |
34 db eval { | |
35 SELECT count(x), sum(x), avg(x), $microsec<10000000 FROM t1; | |
36 } | |
37 } {100000 5000050000 50000.5 1} | |
38 | |
39 finish_test | |
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