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Full Discussion: Different way to connect to database ans execute sql query
Top Forums Shell Programming and Scripting Different way to connect to database ans execute sql query Post 302417108 by gauravgarg on Wednesday 28th of April 2010 01:33:21 PM
Old 04-28-2010
MySQL Different way to connect to database ans execute sql query
Hi Friends,

I am using AIX version and sqlplus to connect to database while writing a shell script.
I have implemented three ways to connect to database :
1)
Code:
sqlplus -s <USERNAME>/<PASSWORD> <<!
@<SQL FILE TO EXECUTE>
exit
!

2)
Code:
sqlplus -s <USERNAME>/<PASSWORD> <<!

-----sql statemenets like -----


SELECT...

exit
!

3)

Code:
sqlplus -s <USERNAME>/<PASSWORD> @ <filename.sql>

********************************************

Please help me to find out the difference in above three, and how does it makes a difference if the .sql file is lying in any different location than the script location ??

Or in better words , which way is most economic to use in script for most quick execution.
Last edited by Scott; 04-28-2010 at 02:47 PM.. Reason: Code tags, please...
 

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LEARN ABOUT REDHAT

drop_database

DROP 
DATABASE(7)						   SQL Commands 						  DROP DATABASE(7)

NAME

       DROP DATABASE - remove a database

SYNOPSIS

       DROP DATABASE name

   INPUTS
       name   The name of an existing database to remove.

   OUTPUTS
       DROP DATABASE
	      This message is returned if the command is successful.

       DROP DATABASE: cannot be executed on the currently open database
	      You  cannot  be connected to the database you are about to remove.  Instead, connect to template1 or any other database and run this
	      command again.

       DROP DATABASE: may not be called in a transaction block
	      You must finish the transaction in progress before you can call this command.

DESCRIPTION

       DROP DATABASE removes the catalog entries for an existing database and deletes the directory containing the data.  It can only be  executed
       by the database owner (usually the user that created it).

       DROP DATABASE cannot be undone. Use it with care!

   NOTES
       This  command  cannot  be executed while connected to the target database. Thus, it might be more convenient to use the shell script dropdb
       [dropdb(1)], which is a wrapper around this command, instead.

       Refer to CREATE DATABASE [create_database(7)] for information on how to create a database.

COMPATIBILITY

   SQL92
       DROP DATABASE statement is a PostgreSQL language extension; there is no such command in SQL92.

SQL - Language Statements					    2002-11-22							  DROP DATABASE(7)
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