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PreparedStatement ???

Sanjeev Shahi
Ranch Hand

Joined: Feb 26, 2001
Posts: 83
Can we use more than one SQL im prepraredStatement? If yes please give example
thanks,
ss
Dave Vick
Ranch Hand

Joined: May 10, 2001
Posts: 3244
Sanjeev
I'm not sure I understand your question. Can you use more than one preparedStatement in your code?
Sure, just make sure you give each one a different variable name or you'll just keep rewrtining over the previous one.

Or are you asking if you can have more than one SQL statment associated with a preparedStatement?
The answer to that is yes, but it might defeat the purpose of the preparedStatement. IF you create a single preparedStatement in your class and keep switching the code in it then you loose the benefit of having a prepared statement. If, for example, you have an insert statement in your preparedStatement and you use it then create a new preparedStatement with the same variable name you've just lost the first one.
If your statements are for one use only then you might not need the preparedStatemnet at all - unless you set them all up when your class is first loaded and they just sit there and wait on the user, that would save a little overhead and time but probably not too much unless they are fairly lengthy queries.
hope that helps
Dave


Dave
Sanjeev Shahi
Ranch Hand

Joined: Feb 26, 2001
Posts: 83
Hi! dave ,
Thanks for replying.
code:
--------------------------------------------------------------------------------
preparedStatement ps1 = conn.prepareStatement("sql goes here");preparedStatement ps2 = conn.prepareStatement("sql goes here");preparedStatement ps3 = conn.prepareStatement("sql goes here");
Actually I meant can we put more than one SQL statement in the bracket.
eg:
PreparedStatment ps1 = con.prepareStatment(
select * from table1,
select* from table2);
I hope I am clear.
ss
Jamie Robertson
Ranch Hand

Joined: Jul 09, 2001
Posts: 1879

you can only do this through the CallableStatement interface. You create the database stored procedure which can execute many sql statements and call it from the java program.
Jamie
 
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