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# 2021 February 15
#
# 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 implements regression tests for SQLite library. The
# focus of this file is testing optimizations associated with "IS NULL"
# and "IS NOT NULL" operators on columns with NOT NULL constraints.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix notnullfault
do_execsql_test 1.0 {
CREATE TABLE t1(a, b);
CREATE TABLE t2(c, d NOT NULL);
}
faultsim_save_and_close
do_faultsim_test 1 -prep {
faultsim_restore_and_reopen
} -body {
execsql {
SELECT * FROM t2 WHERE d NOT NULL
}
} -test {
faultsim_test_result {0 {}}
}
#-------------------------------------------------------------------------
reset_db
do_execsql_test 2.0 {
CREATE TABLE t1(a, b, c);
CREATE TABLE t2(a, b, c, PRIMARY KEY(a, b, c)) WITHOUT ROWID;
}
faultsim_save_and_close
do_faultsim_test 2.1 -faults oom-t* -prep {
faultsim_restore_and_reopen
} -body {
execsql {
SELECT dense_rank() OVER win FROM t2
WINDOW win AS (ORDER BY c IS NULL)
}
} -test {
faultsim_test_result {0 {}}
}
finish_test
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