lvyanquan commented on code in PR #3596: URL: https://github.com/apache/flink-cdc/pull/3596#discussion_r1795366022
########## docs/content.zh/docs/core-concept/transform.md: ########## @@ -153,6 +153,23 @@ Flink CDC uses [Calcite](https://calcite.apache.org/) to parse expressions and [ | COALESCE(value1 [, value2]*) | coalesce(Object... objects) | Returns the first argument that is not NULL.If all arguments are NULL, it returns NULL as well. The return type is the least restrictive, common type of all of its arguments. The return type is nullable if all arguments are nullable as well. | | IF(condition, true_value, false_value) | condition ? true_value : false_value | Returns the true_value if condition is met, otherwise false_value. E.g., IF(5 > 3, 5, 3) returns 5. | +## Casting Functions + +You can use `CAST( <EXPR> AS <TYPE> )` syntax to convert the type of expressions. Possible conversion paths are: Review Comment: `<EXPR>` is not defined in context. Please add some description about it. -- 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. To unsubscribe, e-mail: issues-unsubscr...@flink.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
