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+# 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 1.4 2005/01/19 23:24:51 drh Exp $
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+# An unrestricted join
+#
+catch {unset ::result}
+set result {}
+for {set N 1} {$N<=$bitmask_size} {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<=$bitmask_size} {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
+ } $result
+}
+
+# Error of too many tables in the join
+#
+do_test join3-3.1 {
+ set sql "SELECT * FROM t1 AS t0, t1"
+ for {set i 2} {$i<=$bitmask_size} {incr i} {append sql ", t$i"}
+ catchsql $sql
+} [list 1 "at most $bitmask_size tables in a join"]
+
+
+finish_test