How I can specify default NULL in table?

[Desiders]

I saw a similar discussion about CURRENT_TIMESTAMP, but how to do it with NULL?

[Desiders]

Currently, I just use .extra("DEFAULT NULL")

[tyt2y3]

Ref: https://docs.rs/sea-query/latest/sea_query/table/struct.ColumnDef.html#method.default

[Desiders]

Ref: https://docs.rs/sea-query/latest/sea_query/table/struct.ColumnDef.html#method.default

Thanks for the quick reply. I have seen this, but I don't know how to specify NULL in this method.
I found an option only in the form of .default(SimpleExpr::Custom("NULL".to_owned()))

[Desiders]

I found an option only in the form of .default(SimpleExpr::Custom("NULL".to_owned()))

There is also an option Expr::new_with_left(Keyword::Null), but it's a private API

[Desiders]

There is also an option Expr::new_with_left(Keyword::Null), but it's a private API

I think we need a method like Expr::null(), analogous to Expr::current_timestamp().
If you agree, then I can create a PR.