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Appendix A: System Functions
FILEGROUP_ID
The FILEGROUP_ID function returns the filegroup ID number for the specified filegroup name. The syntax
is as follows:
FILEGROUP_ID(‘’)
The filegroup_name parameter specifies the filegroup name of the required filegroup ID.
FILEGROUP_NAME
The FILEGROUP_NAME function returns the filegroup name for the specified filegroup ID number. The
syntax is as follows:
FILEGROUP_NAME()
The filegroup_id parameter specifies the filegroup ID of the required filegroup name.
FILEGROUPPROPERTY
The FILEGROUPPROPERTY returns the setting of a specified filegroup property, given the filegroup and
property name. The syntax is as follows:
FILEGROUPPROPERTY(, )
The filegroup_name parameter specifies the name of the filegroup that contains the property being
queried. The property parameter specifies the property being queried and can be one of the following
values:
❑ IsReadOnly — The filegroup name is read-only.
❑ IsUserDefinedFG — The filegroup name is a user-defined filegroup.
❑ IsDefault — The filegroup name is the default filegroup.
The return value from this function will be 1 for True, 0 for False, and NULL if the input was not valid.
FILEPROPERTY
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The FILEPROPERTY function returns the setting of a specified filename property, given the filename and
property name. The syntax is as follows:
FILEPROPERTY(, )
The file_name parameter specifies the name of the filegroup that contains the property being queried.
The property parameter specifies the property being queried and can be one of the following values:
❑ IsReadOnly — The file is read-only.
❑ IsPrimaryFile — The file is the primary file.