/ Artifact [e8600e37]

Artifact e8600e379589e85e9fefd2fe4d44a4cdd63f6982:

# 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}