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Top Forums UNIX for Advanced & Expert Users Remove duplicates in flat file Post 302879043 by samjoshuab on Tuesday 10th of December 2013 08:30:15 AM
Old 12-10-2013
Remove duplicates in flat file

Hi all,
I have a issues while loading a flat file to the DB. It is taking much time.
When analyzed i found out that there are duplicates entry in the flat file.
There are 2 type of Duplicate entry.
1) is entire row is duplicate. ( i can use sort | uniq) to remove the duplicated entry.
2) the PK which are forming the composite columns are same for 2 records , but the other columns are different which is also rejected and only one is getting loaded. PFB an example for the same.
My Pk are 1 , 4, 6, 8 from the flat file which is going to be loaded into the DB.
Column names : 1 2 3 4 5 6 7 8 9 10
Records 1 a b c d e f g h i j
records 2 a k l d m f n h o p
So since my PK are alone same and the rest is also different the Loader is ommiting those records. Can you tell me a script by which i can omit the record 2.
Please help.. We are in brink of issues to be fixed before tomorrow evening.
Thanks in advance
Sam
 

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RECSEL(1)							   User Commands							 RECSEL(1)

NAME
recsel - print records from a recfile SYNOPSIS
recsel [OPTION]... [-t TYPE] [-n INDEXES | -e RECORD_EXPR | -q EXPR | -m NUM] [-c | (-p|-P) FIELD_EXPR] [FILE]... DESCRIPTION
Select and print rec data. -d, --include-descriptors print record descriptors along with the matched records. -C, --collapse do not section the result in records with newlines. -S, --sort=FIELD sort the output by the specified field. -U, --uniq remove duplicated fields in the output records. -s, --password=STR decrypt confidential fields with the given password. --help print a help message and exit. --version show version and exit. Record selection options: -i, --case-insensitive make strings case-insensitive in selection expressions. -t, --type=TYPE operate on records of the specified type only. -e, --expression=EXPR selection expression. -q, --quick=STR select records with fields containing a string. -n, --number=NUM,... select specific records by position, with ranges. -R, --random=NUM select a given number of random records. Output options: -p, --print=FIELDS comma-separated list of fields to print for each matching record. -P, --print-values=FIELDS as -p, but print only the values of the selected fields. -R, --print-row=FIELDS as -P, but separate the values with spaces instead of newlines. -c, --count print a count of the matching records instead of the records themselves. Special options: --print-sexps print the data in sexps instead of rec format. AUTHOR
Written by Jose E. Marchesi. REPORTING BUGS
Report bugs to: bug-recutils@gnu.org GNU recutils home page: <http://www.gnu.org/software/recutils/> General help using GNU software: <http://www.gnu.org/gethelp/> COPYRIGHT
Copyright (C) 2010, 2011, 2012 Jose E. Marchesi. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
The full documentation for recsel is maintained as a Texinfo manual. If the info and recsel programs are properly installed at your site, the command info recsel should give you access to the complete manual. recsel 1.4.93 January 2012 RECSEL(1)
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