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Full Discussion: Data comparison
Top Forums Shell Programming and Scripting Data comparison Post 302844883 by leghorn on Tuesday 20th of August 2013 08:29:07 AM
Old 08-20-2013
Data comparison

Hi

I have a linux server with mysql installed.There is some data in mysql tables.
Also.I have a .csv file (not from the aforementioned database)
I need to compare the data in the database nad the .csv and print out the difference.

I tried writing a shell script for that but I was unsuccessful.

I need to ask if there's any way I can export the data from mysql tables to .csv file format and use the diff command to see the comparison of the generated file and the file I had initially.

~thanks

---------- Post updated at 05:59 PM ---------- Previous update was at 05:56 PM ----------

I found one ..
Code:
mysql -uexampleuser -pletmein exampledb -B -e "select * from \`person\`;" | sed 's/\t/","/g;s/^/"/;s/$/"/;s/\n//g' > filename.csv

but before select statement could begin,I need to write another statement
use xyz;

how do I induce this (use xyzSmilie in the shell code .. piping isnt helping

~thanks

Last edited by Franklin52; 08-20-2013 at 09:32 AM.. Reason: Please use code tags
 

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mysqlaccess(1)							  MySQL database						    mysqlaccess(1)

NAME
mysqlaccess-Createnewuserstomysql. USAGE
mysqlaccess [host [user [db]]] OPTIONS SYNOPSIS
mysqlaccess [-?|--help] [-v|--version] [-p|--password=#] [-h|--host=#] [-d|--db=#] [-U|--superuser=#] [-P|--spassword=#] [-H|--rhost=#] [--old_server] [-b|--brief] [-t|--table] [--relnotes] [--plan] [--howto] [--debug=N] [--copy] [--preview] [--commit] [--rollback] DESCRIPTION
-?|--help display this helpscreen and exit -v|--version print information on the program `mysqlaccess' -u|--user=# username for logging in to the db -p|--password=# validate password for user -h|--host=# name or IP-number of the host -d|--db=# name of the database -U|--superuser=# connect as superuser -P|--spassword=# password for superuser -H|--rhost=# remote MySQL-server to connect to --old_server connect to old MySQL-server (before v3.21) which does not yet know how to handle full where clauses. -b|--brief single-line tabular report -t|--table report in table-format --relnotes print release-notes --plan print suggestions/ideas for future releases --howto some examples of how to run `mysqlaccess' --debug=N enter debuglevel N (0..3) --copy reload temporary grant-tables from original ones --preview show differences in privileges after making changes in (temporary) grant-tables --commit copy grant-rules from temporary tables to grant-tables (!don't forget to do an mysqladmin reload) --rollback undo the last changes to the grant-tables. NOTE
At least the user and the db must be given (even with wildcards) If no host is given, `localhost' is assumed Wildcards (*,?,%,_) are allowed for host, user and db, but be sure to escape them from your shell!! (i.e., type * or '*') SEE ALSO
isamchk(1), isamlog(1), mysql(1), mysqladmin(1), mysqld(1), mysqld_multi(1), mysqld_safe(1), mysqldump(1), mysql_fix_privilege_tables(1), mysqlshow(1), mysql_zap(1), perror(1), replace(1) For more information please refer to the MySQL reference manual, which may already be installed locally and which is also available online at http://www.mysql.com/doc/en/ BUGS
Please refer to http://bugs.mysql.com/ to report bugs. AUTHOR
Ver 1.0, distribution 4.0.24 Michael (Monty) Widenius (monty@mysql.com), MySQL AB (http://www.mysql.com/). This software comes with no warranty. Manual page by L. (Kill-9) Pedersen (kill-9@kill-9.dk), Mercurmedia Data Model Architect / system developer (http://www.mercur- media.com) ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+------------------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+------------------------------------+ |Availability | SUNWmysqlr, SUNWmysqlu, SUNWmysqlt | +--------------------+------------------------------------+ |Interface Stability | External | +--------------------+------------------------------------+ NOTES
Source for mysql is available on http://opensolaris.org. MySQL 4.0 19 December 2000 mysqlaccess(1)
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