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Each variable in an expression has a value which may be one of the following
types:
String
Values of type string are text values. When specifying a string in an expression
the string must be enclosed in double quotes.
Integer
Values of type Integer are numeric values. Only whole numbers can be used
and these must lie in the range -2,147,483,648 to +2,147,483,647.
Float
Values of type Float are numeric values. There are no practical limits to
the size of number a Float value can hold.
Boolean
Values of type Boolean can only take one of two values, True or False. They
are logical values and every criteria and filter expression should result
in a Boolean value.
Date
Values of type Date contain both date and time information. A number of
formats for specifying date values are available including short and long
forms such as '25/2/06 16:30' and '25 February 2006 4:30pm'. When specifying
a date in an expression the date must be enclosed in single quotes.
StringList
Values of type StringList contain zero or more strings, grouped together
in a collection. |
