54 lines
1.4 KiB
Plaintext
54 lines
1.4 KiB
Plaintext
# 2002 May 24
|
|
#
|
|
# 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.
|
|
#
|
|
# This file implements tests for joins, including outer joins, where
|
|
# there are a large number of tables involved in the join.
|
|
#
|
|
# $Id: join3.test,v 1.3 2004/07/20 12:45:22 drh Exp $
|
|
|
|
set testdir [file dirname $argv0]
|
|
source $testdir/tester.tcl
|
|
|
|
# An unrestricted join
|
|
#
|
|
catch {unset ::result}
|
|
set result {}
|
|
for {set N 1} {$N<=40} {incr N} {
|
|
lappend result $N
|
|
do_test join3-1.$N {
|
|
execsql "CREATE TABLE t${N}(x);"
|
|
execsql "INSERT INTO t$N VALUES($N)"
|
|
set sql "SELECT * FROM t1"
|
|
for {set i 2} {$i<=$N} {incr i} {append sql ", t$i"}
|
|
execsql $sql
|
|
} $result
|
|
}
|
|
|
|
# Joins with a comparison
|
|
#
|
|
set result {}
|
|
for {set N 1} {$N<=40} {incr N} {
|
|
lappend result $N
|
|
do_test join3-2.$N {
|
|
set sql "SELECT * FROM t1"
|
|
for {set i 2} {$i<=$N} {incr i} {append sql ", t$i"}
|
|
set sep WHERE
|
|
for {set i 1} {$i<$N} {incr i} {
|
|
append sql " $sep t[expr {$i+1}].x==t$i.x+1"
|
|
set sep AND
|
|
}
|
|
execsql $sql
|
|
} $result
|
|
}
|
|
|
|
finish_test
|