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Full Discussion: file is getting overwritten
Top Forums Shell Programming and Scripting file is getting overwritten Post 302446266 by arundhati_s on Wednesday 18th of August 2010 06:37:50 AM
Old 08-18-2010
file is getting overwritten
Hello All,

I am writing a bash script on Solaris O/S. I looping through an array. For each iteration, i connect to the datatabase and use select statement. Output of which is redirected to .CSV file. here is the code for it.
Code:
output="loop.csv"

elements=${#currency_pair[@]}

for((i=0;i<$elements;i++)); do
  echo ${currency_pair[${i}]}
  results=`isql -U$DBLOGIN -P$DBPASSWD -D$DBNAME -b -w 2000 -s',' - o$output <<EOF
 select Code,BidRate,AskRate from FXPoint where RelativeDateType = 1  and
(Code = '${currency_pair[${i}]}')
go
EOF`
done

But the problem is that .CSV file is getting overwritten because, for each iteration of the loop, database connection is getting opened and closed.

How to modify this code to
1) Open the database connection only once.
2) Loop through entire array. Pass the select statement output to the .CSV file
3) close database connection.

Any help is appreciated.

Thanks & Regards
Arundhati
Last edited by jim mcnamara; 08-18-2010 at 07:44 AM.. Reason: code tags please
 

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MONGOEXPORT(1)							  Mongo Database						    MONGOEXPORT(1)

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SYNOPSIS

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DESCRIPTION

       mongoexport  is a tool to export a MongoDB collection to either JSON or CSV. The query can be filtered or a list of fields to output can be
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EXAMPLES

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	      export documents from test.test1 in CSV format

OPTIONS

       --help show usage information

       -h, --host HOST
	      server to connect to (default HOST=localhost)

       -d, --db DATABASE
	      database to use

       -c, --c COLLECTION
	      collection to use

       -q, --query QUERY
	      query filter

       -f, --fields FIELDS
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       -o, --out FILE
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COPYRIGHT

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SEE ALSO

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AUTHOR

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10gen								     June 2009							    MONGOEXPORT(1)
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