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SUM returns NULL when it has no inputs. Ticket #1413. (CVS 2678)

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FossilOrigin-Name: 6281859425d39c11d82875301fefafad1f08416d
This commit is contained in:
drh
2005-09-08 20:37:43 +00:00
parent 3f219f46fc
commit c2bd913a40
8 changed files with 52 additions and 36 deletions
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6
test/func.test
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@ -11,7 +11,7 @@
# This file implements regression tests for SQLite library. The
# focus of this file is testing built-in functions.
#
# $Id: func.test,v 1.39 2005/09/08 19:45:58 drh Exp $
# $Id: func.test,v 1.40 2005/09/08 20:37:44 drh Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
@ -513,14 +513,14 @@ do_test func-18.2 {
}
} {9902.0}
# The sum of nothing is 0. But the sum of all NULLs is NULL.
# The sum of nothing is NULL. But the sum of all NULLs is NULL.
#
do_test func-18.3 {
execsql {
DELETE FROM t5;
SELECT sum(x) FROM t5;
}
} {0}
} {{}}
do_test func-18.4 {
execsql {
INSERT INTO t5 VALUES(NULL);