Interface OptionalArgument
- All Known Implementing Classes:
Coalesce,CountDistinct,DateFormat,DateParse,Greatest,IpPrefix,Least,Locate,Log,Match,MatchOperator,MvSlice,MvSort,MvZip,Rate,Repeat,Round,Substring
public interface OptionalArgument
Marker interface indicating that a function accepts one optional argument (typically the last one).
This is used by the
EsqlFunctionRegistry to perform validation of function declaration.