What common mistake do developers make with Date and datetime casts, why does the mistake cause problems, and what is the safer approach?

What common mistake do developers make with Date and datetime casts, why does the mistake cause problems, and what is the safer approach? One recurring problem with date and datetime casts is applying it without understanding the boundary it protects. Assuming every cast changes the database column type; casting often changes the application's representation of the stored value rather than the SQL schema. In addition, Date-related casts turn persisted date values into convenient date objects supported by the framework. Safer engineering approach: keep the responsibility in the correct layer, use the framework's supported API, validate and authorize inputs, avoid hidden side effects, and verify the behavior with tests.