| /trunk/test/join3.test |
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| @@ -0,0 +1,62 @@ |
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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 |
