User-Defined Values
User-defined values can be used within expressions to be compared against column values. String values should be enclosed within single quotes. Date values should be enclosed within pound signs (#). Decimals and scientific notation are permissible for numeric values. Examples: "FirstName = 'John'"; "Price <= 50.00"; "Birthdate < #1/31/ 82#".
For the columns that contain enumeration values, cast the value to an integer data type. Example: "EnumColumn = 5"