gzip - How to delimit a compressed fixed length file with uncompressing it -

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i'm dealing compressed (gzip) fixed length flat files need turn delimited flat files can feed gpload. told possible delimit file without needing decompress it, , feed directly gpload since can handle compressed files.

does know of way delimit file while in .gz format?

there no way delimit gzip-compressed data without decompressing it. don't need delimit it, can load fixed-width data type, decompressed on fly gpfdist. refer "importing , exporting fixed width data" chapter in admin guide here: http://gpdb.docs.pivotal.io/4330/admin_guide/load.html

here's example:

[gpadmin@localhost ~]$ gunzip -c testfile.txt.gz  bob                 jones                         27   steve               balmer                        50    [gpadmin@localhost ~]$ gpfdist -d ~ -p 8080 & [1] 41525 serving http on port 8080, directory /home/gpadmin  [gpadmin@localhost ~]$ psql -c " >     create readable external table students ( >         name    varchar(20), >         surname varchar(30), >         age int) >     location ('gpfdist://127.0.0.1:8080/testfile.txt.gz') >     format 'custom' (formatter=fixedwidth_in,  >              name='20', surname='30', age='4'); >     " create external table  [gpadmin@localhost ~]$ psql -c "select * students;"   name | surname | age  -------+---------+-----  bob   | jones   |  27  steve | balmer  |  50 (2 rows)

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