ORA-FO-MAXMIN-TYPE-CONSISTENCY 15.3.3 fn:max, 15.3.4 fn:min

*Functions and Operators, Section 15.3.3 fn:max, 15.3.4 fn:min*


The type conversion rules for fn:max, fn:min are inconsistent with the 
type conversion rules for fn:avg.

eg fn:avg says "If all values in $srcval are of type xdt:untypedAtomic 
they are converted to xs:double".
while fn:min says "If all values in $srcval are of type 
xdt:untypedAtomic they are converted to xs:string".