Function bind_checks 

pub fn bind_checks(
    catalog: &Catalog,
    parameters: &Parameters,
    session: &Session,
    name: &QualifiedName,
) -> Result<Option<Checks>>

The CHECK constraints of a table as the query a write runs over the rows it wrote, or None for a table with none.

Errors

If the name does not resolve to a table or a constraint no longer binds against it.