# 2001 November 6
#
# 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 the LIMIT ... OFFSET ... clause
# of SELECT statements.
#
# $Id: limit.test,v 1.1 2001/11/06 14:10:42 drh Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
# Build some test data
#
set fd [open data1.txt w]
for {set i 1} {$i<=32} {incr i} {
for {set j 0} {pow(2,$j)<$i} {incr j} {}
puts $fd "[expr {32-$i}]\t[expr {10-$j}]"
}
close $fd
execsql {
CREATE TABLE t1(x int, y int);
COPY t1 FROM 'data1.txt'
}
file delete data1.txt
do_test limit-1.0 {
execsql {SELECT count(*) FROM t1}
} {32}
do_test limit-1.1 {
execsql {SELECT count(*) FROM t1 LIMIT 5}
} {32}
do_test limit-1.2 {
execsql {SELECT x FROM t1 ORDER BY x LIMIT 5}
} {0 1 2 3 4}
do_test limit-1.3 {
execsql {SELECT x FROM t1 ORDER BY x LIMIT 5 OFFSET 5}
} {5 6 7 8 9}
do_test limit-1.4 {
execsql {SELECT x FROM t1 ORDER BY x LIMIT 50 OFFSET 30}
} {30 31}
do_test limit-1.5 {
execsql {SELECT x FROM t1 ORDER BY x LIMIT 50 OFFSET 50}
} {}
do_test limit-1.6 {
execsql {SELECT * FROM t1 a, t1 b ORDER BY a.x, b.x LIMIT 5}
} {0 5 0 5 0 5 1 5 0 5 2 5 0 5 3 5 0 5 4 5}
do_test limit-1.7 {
execsql {SELECT * FROM t1 a, t1 b ORDER BY a.x, b.x LIMIT 5 OFFSET 32}
} {1 5 0 5 1 5 1 5 1 5 2 5 1 5 3 5 1 5 4 5}
finish_test