# 2015-01-05 # # The author disclaims copyright to this source code. In place of # a legal notice, here is a blessing: # # May you do good and not evil. # May you find forgiveness for yourself and forgive others. # May you share freely, never taking more than you give. # #*********************************************************************** # # This file verifies that INSERT operations with a very large number of # VALUE terms works and does not hit the SQLITE_LIMIT_COMPOUND_SELECT limit. # set testdir [file dirname $argv0] source $testdir/tester.tcl set testprefix selectG # Do an INSERT with a VALUES clause that contains 100,000 entries. Verify # that this insert happens quickly (in less than 10 seconds). Actually, the # insert will normally happen in less than 0.5 seconds on a workstation, but # we allow plenty of overhead for slower machines. The speed test checks # for an O(N*N) inefficiency that was once in the code and that would make # the insert run for over a minute. # do_test 100 { set sql "CREATE TABLE t1(x);\nINSERT INTO t1(x) VALUES" for {set i 1} {$i<100000} {incr i} { append sql "($i)," } append sql "($i);" set microsec [lindex [time {db eval $sql}] 0] db eval { SELECT count(x), sum(x), avg(x), $microsec<10000000 FROM t1; } } {100000 5000050000 50000.5 1} finish_test