Update of /cvsroot/monetdb/MonetDB5/src/modules/kernel
In directory sc8-pr-cvs16.sourceforge.net:/tmp/cvs-serv25330/src/modules/kernel
Modified Files:
Tag: MonetDB_5-4
algebra.mx
Log Message:
sum now returns NULL for empty bats
Index: algebra.mx
===================================================================
RCS file: /cvsroot/monetdb/MonetDB5/src/modules/kernel/algebra.mx,v
retrieving revision 1.192.2.1
retrieving revision 1.192.2.2
diff -u -d -r1.192.2.1 -r1.192.2.2
--- algebra.mx 7 Feb 2008 08:23:28 -0000 1.192.2.1
+++ algebra.mx 14 Mar 2008 19:18:31 -0000 1.192.2.2
@@ -1071,13 +1071,15 @@
@2 [EMAIL PROTECTED];
BATcheck(b,"[EMAIL PROTECTED]@2");
+ if (!BATcount(b))
+ result = @2_nil;
BATloop(b, p, q) {
@1 *value = (@1*) BUNtloc(bi, p);
if (*value == @1_nil) {
result = @2_nil;
break;
} else {
- result += (@2) *value;
+ result += *value;
}
}
*res = result;
@@ -1098,6 +1100,8 @@
@2 [EMAIL PROTECTED];
BATcheck(b,"BATprodInt");
+ if (!BATcount(b))
+ result = @2_nil;
BATloop(b, p, q) {
@1 *value = (@1*) BUNtloc(bi, p);
if (*value == @1_nil) {
@@ -3703,10 +3707,15 @@
[EMAIL PROTECTED](dbl* res, BAT *b)
{
int cnt = BATcount(b);
- dbl result=0.0;
- [EMAIL PROTECTED](&result, b);
- *res = result/cnt;
+ if (cnt) {
+ dbl result=0;
+
+ [EMAIL PROTECTED](&result, b);
+ *res = result/cnt;
+ } else {
+ *res = dbl_nil;
+ }
return GDK_SUCCEED;
}
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