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Full Discussion: SQL query in a loop with single sqlplus connection
Top Forums Shell Programming and Scripting SQL query in a loop with single sqlplus connection Post 302492740 by durden_tyler on Tuesday 1st of February 2011 10:26:06 AM
Old 02-01-2011
Alternatively, if you do not want to/cannot store all account numbers in a variable, then you could create an Oracle SQL script from your data file. So if your data file looks like this -

Code:
Account "ACC_1"
Account "ACC_2"
Account "ACC_3"

you could process it thereby creating a script like so -

Code:
SELECT address
FROM  account_table
WHERE account_no IN (
'ACC_1',
'ACC_2',
'ACC_3'
);

This script could then be fed to a single sqlplus session.

Yet another powerful alternative in Oracle is - external tables.

Quote:
...
The problem is that the number of accounts might be really large (several thousands) and for each one I need to performs several actions based on the results returned in the query (part of the logic in the loop). ...
If those "actions" are database actions, then of course, you'll need a more complex Oracle script. Otherwise if they are *nix actions, then you have your address list at your disposal.
Really depends on what you are trying to do next.

HTH,
tyler_durden
 

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LEARN ABOUT DEBIAN

cvm-pgsql

cvm-pgsql(8)						      System Manager's Manual						      cvm-pgsql(8)

NAME

       cvm-pgsql - PgSQL module

SYNOPSIS

       cvm-pgsql

CREDENTIALS

       Pass phrase

DESCRIPTION

       This module queries a PgSQL database for the account name, compares the stored pass phrase with the given one using crypt(3).

CONFIGURATION VARIABLES

       The server hostname, port, database, username, password, and additional options can be controlled by setting $PGHOST, $PGPORT, $PGDATABASE,
       $PGUSER, $PGPASSWORD, and $PGOPTIONS respectively, which are parsed by the PgSQL client library.

       CVM_MYSQL_POSTQ (optional)
	      The SQL query to execute after the credentials have been validated, see cvm-sql(7).

       CVM_PGSQL_PWCMP (optional)
	      The password comparison module to use.

       CVM_PGSQL_QUERY (optional)
	      The SQL query to issue to retrieve the row containing the account information from the database.

SEE ALSO

       cvm-sql(7), cvm-mysql(8), cvm-pwfile(8), cvm-qmail(8), cvm-unix(8), cvm-vmailmgr(8),  cvm-benchclient(8),  cvm-checkpassword(8),  cvm-test-
       client(8)

	http://untroubled.org/pwcmp/pwcmp.html
	http://untroubled.org/cvm/cvm.html

																      cvm-pgsql(8)
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