Solved

IN Statement Query

Posted on 2009-07-04
12
245 Views
Last Modified: 2012-05-07
I have a count query which i am using to determine if the user exist or not. I am having an IN Statement in the query. Unfortunately everytime i run spring throws an error that the column value is greater than 2. If someone can point what i am doing wrong that would be great.
private final static String VALIDATE_USER_SQL = " select count(*) from user_table where id = ? and user in (?) ";
 
public boolean validateUser(final UserModel userModel, final List user) {
 
		if (LOG.isInfoEnabled()) {
			LOG
					.info("inside validateUser()");
		}
 
		Object[] parameters = new Object[] { new Integer(userModel.getUserId(), user };
		int[] paramTypes = { Types.INTEGER, Types.VARCHAR };
		int count = 0;
		try {
 
			count = getJdbcTemplate().queryForInt(VALIDATE_USER_SQL,
					parameters, paramTypes);
 
			if (count > 0) {
 
				if (LOG.isDebugEnabled()) {
					LOG.debug("Count is [ " + count + " ]");
				}
 
				return true;
			}
 
		}
 
		catch (final DataAccessException ex) {
 
			if (LOG.isErrorEnabled()) {
				LOG.error("DataAccessException [ " + ex.getMessage() + " ]");
			}
		}
 
		return false;
	}

Open in new window

0
Comment
Question by:Micheal_Male
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 4
  • 2
  • +1
12 Comments
 
LVL 86

Assisted Solution

by:CEHJ
CEHJ earned 25 total points
ID: 24777487
You can't parameterize (use bind variables in) a set unfortunately
0
 
LVL 40

Expert Comment

by:mrjoltcola
ID: 24777508
You did not say which database; if you are using Oracle you can pass Java collections in as bind variables.  You cannot use a direct IN(:var) but you can pass it as a collection and cast it.

http://knol.google.com/k/franck-pachot/oracle-passing-a-list-as-bind-variable/17uabcrki6uux/2#
0
 
LVL 143

Accepted Solution

by:
Guy Hengel [angelIII / a3] earned 225 total points
ID: 24777510
I agree.
however, if you have for example sql server, you could implement a function like I did (search for dbo.ParmsToList), and change the query like this:
private final static String VALIDATE_USER_SQL = " select count(*) from user_table where id = ? and user in ( select value from dbo.ParmsTolist(?, ',') ) ";

Open in new window

0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 86

Expert Comment

by:CEHJ
ID: 24777529
Otherwise, if you can't use that or don't want to narrow the portability of your code, just concatenate the List as part of the sql string and use the other parameter as the only bind variable. Although i must say i'm a little surprised that 'getUserId' can have any relevance to more than one user ...
0
 

Author Comment

by:Micheal_Male
ID: 24777538
I am suing postgres DB
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 24777555
>>I am suing postgres DB

What, for not allowing you to use a List as a bin variable..? ;-)
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 24777557
(bind variable)
0
 

Author Comment

by:Micheal_Male
ID: 24777567
LOL i am sorry i meant using heheh. I will search on bind variable and will implement the solution to see if it works. Will update.
0
 

Author Comment

by:Micheal_Male
ID: 24777576
Or i can use a loop to see what the user list size is and pass the id and the user in a loop. If count is > 0 then break and return true. But i was trying to find an efficient way like Bind variables. Let me see if i can implement it.
0
 
LVL 40

Expert Comment

by:mrjoltcola
ID: 24777599
>>I am suing postgres DB

LOL, thanks for the laugh... :)

0
 
LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 24777623
I am also sure the function I mentioned can be translated into postgreSql ... :)
0
 

Author Comment

by:Micheal_Male
ID: 24777676
Thanks All. Angel idea is the perfect and easy one. Worked perfect,.
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
How to get all the API from website? 11 161
Convert from a json string array to a Java object 3 81
jsp insert to database example 2 91
learn programming 8 95
Are you developing a Java application and want to create Excel Spreadsheets? You have come to the right place, this article will describe how you can create Excel Spreadsheets from a Java Application. For the purposes of this article, I will be u…
Java functions are among the best things for programmers to work with as Java sites can be very easy to read and prepare. Java especially simplifies many processes in the coding industry as it helps integrate many forms of technology and different d…
This tutorial covers a step-by-step guide to install VisualVM launcher in eclipse.
This theoretical tutorial explains exceptions, reasons for exceptions, different categories of exception and exception hierarchy.
Suggested Courses

710 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question