INFILE

The INFILE command causes Oracle OLAP to read statement input from a specified file.

Syntax

INFILE {file-id|EOF} [NOW] [NLS_CHARSET charset-exp] 

Arguments

file-id

The name of a file from which to read input. File-id is a text expression that represents the name of the file. The name must be in a standard format for a file identifier.

The input file must contain only OLAP DML statements, along with appropriate responses to any prompts generated by the statements. Each statement or response must appear on a separate line in the file.

EOF

Terminates the reading of input from the current file and causes Oracle OLAP to resume reading input from the location from which the INFILE command was executed. Use of INFILE EOF is optional. See "About the Input File" and "INFILE with Both NOW and EOF".

NOW

Indicates that Oracle OLAP should open the input file specified in the INFILE and read its statements immediately upon encountering the INFILE instead of waiting until the program containing the INFILE is finished. This has the effect of nesting the input file's statements within the program. See "INFILE with Both NOW and EOF". This argument must be specified after file-id.

NLS_CHARSET charset-exp

Specifies the character set that Oracle OLAP will use when reading data from the file specified by file-id. This allows Oracle OLAP to convert the data accurately into the current character set, as identified by the NLS_LANG option. This argument must be specified after file-id. When this argument is omitted, then Oracle OLAP handles the data in the file as having the database character set, which is recorded in the NLS_LANG option.

Notes

A number of options are important during file read and write operations. These options are listed in Table 15-1, "File Reading and Writing Options".

When the end of the input file is reached, Oracle OLAP resumes reading input from the location from which the INFILE command was executed. This could be another input file. You do not need to end the input file with the statement INFILE EOF.

INFILE ignores trailing blanks at the end of a line, or between the last text on a line and a continuation mark. INFILE also ignores blank lines.

When you use the NOW keyword and the input file ends with a continued statement, the statement is ignored. For example, if the file ends with "show - ," Oracle OLAP ignores the SHOW command.

When you include an INFILE command without the NOW keyword in a program, the INFILE command is not executed until the program has finished executing. In a nested program, it is not executed until all the programs involved have finished executing. Also, when several INFILE commands have been executed by a program, the input files are read in the opposite order from which they were specified.

For example, assume that program.a calls program.b which calls program.c, and each program contains two INFILE commands, one before and one after the call to the next program (as illustrated in the following code). In this case, the order of execution is: a2, b2, c2, c1, b1, a1.

program.a
   INFILE a1
   "
        program.b
           INFILE b1
           "
                program.c
                   INFILE c1
                   INFILE c2
           "
           INFILE b2
   "
   INFILE a2

When you include an INFILE command in a program with the NOW keyword, the INFILE command executes immediately. However, INFILE with the NOW keyword requires more space than usual on the program stack. To conserve stack space, you should use the NOW keyword only when it is necessary.

The NOW keyword is intended for use within programs, but you can use it at any time. When you use it when the input file would not ordinarily be deferred, the NOW keyword has no visible effect. However, since it requires extra stack space, you should not use it in these situations.

When you use both the NOW and EOF keywords, the NOW keyword is ignored.

When you want the statements from a disk file to be copied to a debugging file as they are executed, see DBGOUTFILE.

When you export PERMIT_READ or PERMIT_WRITE programs which are hidden, they are empty when imported. Additionally, when you outfile PERMIT_READ or PERMIT_WRITE programs which are hidden, then they are empty when infiled.

Examples

INFILE newdefs NOW