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Fix for #2445. A bug in the lookupName() logic that could cause a crash when a WHERE clause used an alias to refer to an expression in the result-set of the SELECT, and that expression was itself a reference to a table column. (CVS 4122)

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FossilOrigin-Name: 044ca1c72a8f4632dc2e6a94690d164d3560ee38
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danielk1977
2007-06-25 16:29:33 +00:00
parent 576d3db541
commit c9cf6e3d31
5 changed files with 27 additions and 12 deletions
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15
test/where.test
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@ -11,7 +11,7 @@
# This file implements regression tests for SQLite library. The
# focus of this file is testing the use of indices in WHERE clases.
#
# $Id: where.test,v 1.42 2007/05/14 11:34:47 drh Exp $
# $Id: where.test,v 1.43 2007/06/25 16:29:34 danielk1977 Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
@ -1137,6 +1137,19 @@ do_test where-14.12 {
}
} {4/4 4/1 1/4 1/1 sort}
# Ticket #2445.
#
# There was a crash that could occur when a where clause contains an
# alias for an expression in the result set, and that expression retrieves
# a column of the second or subsequent table in a join.
#
do_test where-15.1 {
execsql {
CREATE TEMP TABLE t1 (a, b, c, d, e);
CREATE TEMP TABLE t2 (f);
SELECT t1.e AS alias FROM t2, t1 WHERE alias = 1 ;
}
} {}
integrity_check {where-99.0}