Casting Timestamp to numeric and vice-versa
Casting a Timestamp to a numeric, or a numeric to a Timestamp, is not allowed by default and not supported by the SQL Standard.
Before Upgrade to CDP 7.1.6
In CDP 7.1.5 and earlier, casting to/from Timestamp/numeric was allowed.
After Upgrade to CDP 7.1.6
In CDP 7.1.6, casting to/from Timestamp/numeric is not allowed by default. A new
hive.strict.timestamp.conversion property was introduced and set to
true by default.
select cast(123 as timestamp);
FAILED: SemanticException Line 0:-1 Wrong arguments '123': Casting NUMERIC types to TIMESTAMP is prohibited (hive.strict.timestamp.conversion)
For more information, see HIVE-24157.
To use the legacy behavior that allows casting a Timestamp to numeric and vice-versa, set
hive.strict.timestamp.conversion to false.