maropu commented on a change in pull request #26716: [SPARK-30083][SQL] visitArithmeticUnary should wrap PLUS case with UnaryPositive for type checking URL: https://github.com/apache/spark/pull/26716#discussion_r352902281
########## File path: docs/sql-migration-guide.md ########## @@ -254,6 +254,8 @@ license: | </tr> </table> + - Since Spark 3.0, the unary arithmetic operator plus(`+`) only accept string, numeric and interval type values as inputs. Besides, `+` with a integral string representation will be coerced to double value, e.g. `+'1'` results `1.0`. In Spark version 2.4 and earlier, there is no type checking for it, thus, all type values with a `+` prefix is valid, e.g. `+ array(1, 2)` is valid and results `[1, 2]`. Besides, there is no implicit type coercion for `+` with string, e.g. `+'1'` results `1`. Review comment: nit: accept -> accepts ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org