richardstartin commented on a change in pull request #8304:
URL: https://github.com/apache/pinot/pull/8304#discussion_r825769575
##########
File path:
pinot-common/src/main/java/org/apache/pinot/common/function/scalar/ArithmeticFunctions.java
##########
@@ -104,4 +111,30 @@ public static double ln(double a) {
public static double sqrt(double a) {
return Math.sqrt(a);
}
+
+ @ScalarFunction
+ public static double sign(double a) {
+ return Math.signum(a);
+ }
+
+ @ScalarFunction
+ public static double pi() { return Math.PI; }
+
+ @ScalarFunction
+ public static double e() { return Math.E; }
Review comment:
Sure, it needs to be a function, but it should be implemented as or
similar to LiteralTransformFunction so that the array of e or pi values can be
stored in the query context and shared across segments. Having said that, these
will be very rarely invoked functions so maybe this can be deferred until
someone actually complains about them.
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