# 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