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Add the SQLITE_MAX_COMPOUND_SELECT compile-time parameter for limiting

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the number of terms in a compound select statement.  Set the default limit
to 100. (CVS 4046)

FossilOrigin-Name: 0d71ad4591eae9de8749fb2da6455ac661587f7a
This commit is contained in:
drh
2007-06-07 10:55:35 +00:00
parent 39984cdc8b
commit 0325d8731b
6 changed files with 57 additions and 16 deletions
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21
test/select7.test
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@ -10,7 +10,7 @@
# focus of this file is testing compute SELECT statements and nested
# views.
#
# $Id: select7.test,v 1.9 2007/05/09 22:56:39 drh Exp $
# $Id: select7.test,v 1.10 2007/06/07 10:55:36 drh Exp $
set testdir [file dirname $argv0]
@ -135,4 +135,23 @@ ifcapable {subquery && compound} {
{only a single result allowed for a SELECT that is part of an expression}]
}
# Verify that an error occurs if you have too many terms on a
# compound select statement.
#
if {$SQLITE_MAX_COMPOUND_SELECT>0} {
set sql {SELECT 0}
set result 0
for {set i 1} {$i<$SQLITE_MAX_COMPOUND_SELECT} {incr i} {
append sql " UNION ALL SELECT $i"
lappend result $i
}
do_test select7-6.1 {
catchsql $sql
} [list 0 $result]
append sql { UNION ALL SELECT 99999999}
do_test select7-6.2 {
catchsql $sql
} {1 {too many terms in compound SELECT}}
}
finish_test