Hive Type Casting Guide: CAST & TO_XXX Functions

The method for forced type conversion in Hive is as follows:

1. CAST function: The CAST function can be used to convert data types to a specified type. For example, converting a string type to an integer type:
2. Convert the value ’10’ to an integer.
3. TO_XXX function: Hive also provides specific conversion functions, such as TO_INT, TO_STRING, etc., for converting data types to the specified type. For example, converting a string type to an integer type:
4. Choose to convert the value ’10’ to an integer.

It is important to note that when performing type conversions, you must ensure that the target type can accommodate the original data, otherwise it may lead to data loss or exceptions.