Filemaker Pro 8.5 Educational Maintenance T2 TJ085LL/A 사용자 설명서
제품 코드
TJ085LL/A
Chapter 8
|
Logical functions 127
Chapter 8
Logical functions
test for a condition to evaluate it as true or false. This is known as a
value. If the condition is true, FileMaker Pro returns a
1
; if the condition is false,
FileMaker Pro returns a
0
. You can use the keywords True and False with logical
functions and operators when a Boolean value is needed. Keyword True returns
1
and
keyword False returns
0
.
Logical functions can also evaluate parameters such as text or arithmetic operations that
do not make a true or false statement, or in the case of the GetField function, return the
do not make a true or false statement, or in the case of the GetField function, return the
contents of another
Click a function name for details.
This function
Returns
One of several possible results based on a series of tests.
One result value, according to the integer value of a specified test.
Evaluates the specified
An error code, if any, from the specified expression.
0
if the specified data has a value of 0 or is empty, otherwise returns
1
.
The contents of the referenced field.
The requested layout object attributes from the calculation's active window.
The contents of the referenced field from the requested record number.
One of two possible results depending on the value of the specified test.
True(1) if the specified field is empty, if the related field, related table,
relationship, or file is missing, or if some other error occurs; otherwise
returns False(0).
relationship, or file is missing, or if some other error occurs; otherwise
returns False(0).
0
when a record contains an invalid value because of a data type mismatch
(text in a date field, for example).
True(1) if the syntax of the specified expression is correct.
Sets variable to the result of value for the duration of the specified
expression.
expression.
The value specified in the sourceField parameter using the
in the
The value specified in the sourceField parameter using the relationships
in the relationships graph.