FSIZE( ) Function
Returns the size in bytes of a specified field or file.
FSIZE(cFieldName [, nWorkArea | cTableAlias] | cFileName)
Parameters
cFieldName
Specifies the name of the field.nWorkArea
Specifies the work area of the table for which FSIZE( ) returns a field size.FSIZE( ) returns 0 if a table isn't open in the work area you specify.
cTableAlias
Specifies the alias of the table for which FSIZE( ) returns a field size.Visual FoxPro generates an error message if you specify a table alias that doesn't exist.
cFileName
Specifies a file for which FSIZE( ) returns the size in bytes.
Return Value
Numeric
Remarks
The current setting of SET COMPATIBLE determines if FSIZE( ) returns the size of a field or a file. If SET COMPATIBLE is set to OFF or FOXPLUS (the default), FSIZE( ) returns the size of a field. If SET COMPATIBLE is set to ON or DB4, FSIZE( ) returns the size of a file.
The following table shows the default size (in bytes) for each fixed-length field type.
Field type |
Default field size(in bytes) |
|---|---|
Currency |
8 |
Date |
8 |
DateTime |
8 |
Double |
8 |
Integer |
4 |
Logical |
1 |
Memo |
4 |
General |
4 |
The size of a field can be displayed with DISPLAY STRUCTURE and LIST STRUCTURE.
If you omit the optional nWorkArea and cTableAlias arguments, FSIZE( ) returns the field size for a field in the current table and work area.
Example
The following example uses FSIZE( ) to return the size of two fields in the customer table.
SET COMPATIBLE OFF
CLOSE DATABASES
OPEN DATABASE (HOME(2) + 'Data\testdata')
USE customer && Open Customer table
CLEAR
? FSIZE('contact') && Displays 30
? FSIZE('cust_id') && Displays 6