When one of the column names is longer than 18 characters, the column name field size in the DATA, TABLE, or IXF formats must be increased to 30 characters.
The table name and authorization ID are not included in the DATA or TABLE format. The column name field size must be increased from 18 to 30 when one of the column names is longer than 18 characters. The release number has been changed to REL 3.0 in order to indicate the use of longer column names in the QMF DATA object. The use of this new release number will result in an error if you try to import the object into a QMF release earlier than version 8.1.
The IXF (T) table record contains the owner and name of a table that is being exported using the QMF EXPORT TABLE command. However, the the (T) table record contains a blank owner and name when exporting the QMF data object that was the result of a RUN QUERY command. For long name support, the table name is truncated at 18 characters and the owner name is truncated at 8 characters.
The column name field in the (C) column record must be increased from 18 to 30 characters when there is a column name longer than 18 characters. When long column names are present, the IXF version number in the (H) header record is set to 0001. When there are no column names longer than 18 characters, the older IXF format that is compatible with previous releases of QMF is used. In these cases, the IXF version number in the (H) header record is 0000.