Hi,
I've tried searching the archives and haven't found anything relevant - but
apologies if this has been discussed before.
I was wondering how viable it would be to alter the behavior of Spark to
allow:
"String1" + "String2" = "String1String2"
Currently it tries to cast both Strings to double and subsequently returns
null.
Just having a quick look at the code and there are already precedents for
this in
org.apache.spark.sql.catalyst.expressions.{BinaryArithmetic, Add}
in that it handles Dates and Decimals differently from numeric.
Extending that to handle Strings seems straightforward, but I am obviously
not an expert on the Spark code base.
thanks,
Mark Le Noury
