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 FileMaker Pro Custom Functions

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IsEmptyString ( Field )

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  Average rating: 4.1  (39 votes)
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Ryan Grgurich, CRS Manufacturing, Inc.

Use to determine if field is an empty string value.

Sample Input:
IsEmptyString ( PhoneNumber::Number )
Sample Output:
1 if field is empty string or empty record, maybe in the last portal row.

0 if field is not an empty string

 Then copy & paste into FileMaker Advanced's Edit Custom Function window.

Click here to copy To Clip Manager if you have myFMbutler's Clip Manager installed


Really just a little sugar. Use it to determine if a field is an empty string.

Note: these functions are not guaranteed or supported by Please contact the individual developer with any questions or problems.

This is my Custom Function and I want to edit it


5 most recent comments | Show all 11 comments

I opt to use an empty CF and call it Null. This makes code easier to read.

Table::Field = Null es%29

Matt Petrowsky, Murieta, CA
October 24, 2010 12:18pm

Table::Field = "", returns 1 for an empty related record in a portal. IsEmpty(Table::Field) returns 0 for an empty record in a portal. I suppose I could just use, not IsEmpty(Table::Field) to get a 1.

Ryan Grgurich, Northridge, CA
October 25, 2010 8:57am

IsEmpyt() and your own custom function have nothing to do with checking for an empty *record*. They check for an empty field. If IsEmpty( Table::Field ) returns 0 (false), then that means that the "Field" field in the related record of the "Table" table occurrence *is not* empty. Getting "not IsEmpty()" for a field that contains a value would return false, not 1.

In order to check for an empty *record*, your function would need to check every field of a given record. That could potentially be useful, but probably not very practical to implement.

beowulf, Santa Clara, CA
October 25, 2010 11:40am

I screwed up the "not IsEmpty()" explanation. It would return 1 for a field that contains a value.

beowulf, Santa Clara, CA
October 25, 2010 11:48am

I all ways auto generate UUID for every record, so checking for these lets me know if a record exist or not.

Ryan Grgurich, Northridge, CA
October 26, 2010 9:45am

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