Rebuild Options - /c

Specifies file compression.

Data compression can only be specified for an output file. Key compression can be specified for an output file or the rebuild of an existing file.

The /c option operates in a similar manner to the Compiler directives DATACOMPRESS and KEYCOMPRESS.

Parameters

d n

Data compression. n must be in the range 0 through 255:

Value	Description
0	No data compression.
1 through 127	Reserved.
128 through 255	User-defined compression routines.

i n

Key compression. n must be in the range 0 through 15:

Value	Description
0	No key compression.
1	Duplicates are compressed.
2	Leading characters are compressed.
4	Leading spaces are compressed.
8	Trailing nulls are compressed.

You can specify any combination of these key compressions by adding together the appropriate values.

Note: You cannot compress the data in C-ISAM and Level 2 files.

rebuild infile.dat,outfile.dat /c:d1i6

specifies data compression routine 1, and index compression of leading characters and trailing spaces.

rebuild infile.dat,outfile.dat /c:i1

specifies key compression of duplicates only.