equals method
Whether this column is equal to the given value, which must have a fitting
type. The compare value will be written
as a variable using prepared statements, so there is no risk of
an SQL-injection.
This method only supports comparing the value of the column to non-
nullable values and translates to a direct = comparison in SQL.
To compare this column to null, use isValue.
Implementation
Expression<bool> equals(T compare) => equalsExp(variable(compare));