Type conversion: The cast function is used to convert one data type into another. For example, converting a string into an integer, converting a floating point number into an integer, and so on.
Data formatting: the cast function can be used to format data types such as dates, times, or numbers. For example, formatting a date into a specific format, or formatting a number to a specific precision.
Data Comparison: The Cast function can be used to compare values of different data types. For example, converting a character string of numbers to numeric for size comparison.
Data calculation: The cast function can convert data types into suitable types for calculations. For example, converting a numerical string into a numeric type for mathematical operations.
Data presentation: the cast function can be used in query results to convert data types to a suitable format for display. For example, converting numeric data to currency format, or converting date data to a user-friendly display format.