Performing an implicit data type conversion requires a cast definition (see Usage Notes) that specifies the following:
- the AS ASSIGNMENT clause
- a source data type that is in the same INTERVAL family as the source of the implicit cast:
|This INTERVAL data type …||Belongs to this INTERVAL family …|
The source data type of the cast definition does not have to be an exact match to the source of the implicit type conversion.
SQL Engine performs implicit INTERVAL-to-UDT conversions for the following operations:
- Passing arguments to stored procedures, external stored procedures, UDFs, and UDMs
- Specific system operators and functions identified in other sections of this document, unless the DisableUDTImplCastForSysFuncOp field of the DBS Control Record is set to TRUE