3 # The author disclaims copyright to this source code. In place of
4 # a legal notice, here is a blessing:
6 # May you do good and not evil.
7 # May you find forgiveness for yourself and forgive others.
8 # May you share freely, never taking more than you give.
10 #***********************************************************************
11 # This file implements regression tests for SQLite library.
13 # This file implements tests for joins, including outer joins, where
14 # there are a large number of tables involved in the join.
16 # $Id: join3.test,v 1.4 2005/01/19 23:24:51 drh Exp $
18 set testdir [file dirname $argv0]
19 source $testdir/tester.tcl
21 # An unrestricted join
23 catch {unset ::result}
25 for {set N 1} {$N<=$bitmask_size} {incr N} {
28 execsql "CREATE TABLE t${N}(x);"
29 execsql "INSERT INTO t$N VALUES($N)"
30 set sql "SELECT * FROM t1"
31 for {set i 2} {$i<=$N} {incr i} {append sql ", t$i"}
36 # Joins with a comparison
39 for {set N 1} {$N<=$bitmask_size} {incr N} {
42 set sql "SELECT * FROM t1"
43 for {set i 2} {$i<=$N} {incr i} {append sql ", t$i"}
45 for {set i 1} {$i<$N} {incr i} {
46 append sql " $sep t[expr {$i+1}].x==t$i.x+1"
53 # Error of too many tables in the join
56 set sql "SELECT * FROM t1 AS t0, t1"
57 for {set i 2} {$i<=$bitmask_size} {incr i} {append sql ", t$i"}
59 } [list 1 "at most $bitmask_size tables in a join"]