-401 The operands of an arithmetic or comparison operation are not comparable.

Explanation
An arithmetic operation that appears within the SQL statement
has a mixture of numeric and nonnumeric operands, or the operands of a comparison
operation are not compatible. An arithmetic or comparison operation is defined
in the statement with operands that include non-comparable data types. Examples
include: 
Comparison of numeric and character data types 

Comparison of numeric and graphic data types 

Comparison of date and non-date data types 

Comparison of time and non-time data types 

User response
The statement cannot run. Check the data
types of all operands to ensure that their data types are comparable and compatible
with their usage in the statement. If all the operands of the SQL statement
are correct and a view is being accessed, check the data types of all the
operands in the view definition