Value component of a query band specification.
pair_value can be up to 256 VARCHAR UNICODE characters in length.
The number of name=value pairs is limited to the maximum length of the string, which is 2,048 UNICODE characters, including pad characters.
- SEMICOLON (;)
- a null
If an APOSTROPHE character is embedded within a pair value, you must type it twice, to escape it. Otherwise, the system interprets it as a pair_name =pair_value string terminator.