BTEQ opens the import file in response to an IMPORT command. BTEQ closes the import file whenever one of the following conditions occurs:
- BTEQ encounters an end-of-file condition.
- Another IMPORT command is issued.
- The AXSMOD option was used and a LOGOFF command is issued.
- An EXIT or QUIT command is issued.
- BTEQ encounters an error while reading data from the import file.