pub fn validate_added_key_identity(
table: &str,
constraint: &TableKeyConstraint,
existing_keys: &[TableKeyConstraint],
checks: &[TableCheck],
foreign_keys: &[ForeignKey],
) -> Result<(), SQLError>pub fn validate_added_key_identity(
table: &str,
constraint: &TableKeyConstraint,
existing_keys: &[TableKeyConstraint],
checks: &[TableCheck],
foreign_keys: &[ForeignKey],
) -> Result<(), SQLError>