Support arbitrary expressions in LIMIT clause

[alamb]

Follow on to #9506

The idea is to support arbitrary expressions that can be consolidated to a constant in the LIMIT clause. For example

❯ select * from (values (1)) LIMIT 10*100;
Error during planning: Unsupported operator for LIMIT clause

This query should be able to run (and return the single value)

❯ select * from (values (1)) LIMIT 10+100;
+---------+
| column1 |
+---------+
| 1       |
+---------+

#9790 adds support for basic +/- but the general purpose solution that would handle any expr that can be consolidated to a constant would be better

As suggested by @jonahgao this might look like change the Limit logical plan to support arbitrary expressions?

pub struct Limit {
    pub skip: Expr,
    pub fetch: Option<Expr>,
    pub input: Arc<LogicalPlan>,
}

The SimplifyExpressions rule can automatically optimize them into constants. Some optimization rules such as PushDownLimit only run when the limit expression is a constant. We may need to add a cast for the limit expression when planning, only checking if it is a constant of type u64.

When creating the LimitExec physical plan, convert the limit expression into PhysicalExpr and evaluate it.

Originally posted by @jonahgao in #9790 (comment)

[Lordworms]

I can do this one since I have been doing a related limit pushdown feature.

[Lordworms]

wait until #9815 (comment) merged

[alamb]

This one is probably ready to work on now

[alamb]

While re-reading this I think we should start with implementhing limits that can be evaluated to a constant by the time the physical plan is created (aka don't change the physical execution plans)

It is not clear to me what LIMIT 100 + x means

The key usecases are:

• LIMIT $1 -- parameters like Support prepared statement arguments in the LIMIT clause #12294
• LIMIT 8 * 1024 -- expressions that evaluate to constants

[jonahgao]

While re-reading this I think we should start with implementhing limits that can be evaluated to a constant by the time the physical plan is created (aka don't change the physical execution plans)

I will switch my focus to working on it.