Thanks Danny for your update, the FLIP page looks very good now.
Flink already has some implicit casting rules in LogicalTypeCasts[1]. The
biggest difference is that the previous implicit casting is strictly
limited to the safety, "Implicit casts are used for safe type widening and
type generaliza
Thanks for the feedback, Jingsong ~
This design mainly follows the behaviors of PostgreSQL and SQL-SERVER,
because their rules are more in line with the SQL standard.
I have fixed the WIKI and add more details about the diff in it.
Best,
Danny Chan
Jingsong Li 于2021年3月11日周四 下午1:34写道：
> Thanks
Thanks Danny for starting this discussion.
Big +1 for Implicit Type Coercion, in my opinion, it is very useful for
writing SQL conveniently.
I think there are two orthogonal things to discuss here:
1.[Matrix] Which types and which types can be implicitly converted.
2.[Strategies] In different cas
Hello, fellows, long time no see ~
Here i want to fire a discussion about the SQL implicit type coercion, a
required feature for SQL production but missed for Flink SQL for a long
time ~
SQL implicit type coercion is very useful for these cases:
- the inter-operation within builtin SQL operators
