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PreparedStatements ? after WHERE

Posted on 2002-06-12
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Last Modified: 2010-03-31
Hi,

Can I put the ? marker after the WHERE clause?
Like:
SQL = "SELECT * FROM mytable WHERE ?";
PreparedStatement pstmt = conn.prepareStatement(SQL);
pstmt.setString(1,"ID = 23 AND ODJ = 23 AND ...(etc..)");
ResultSet rs = pstmt.executeQuery();

Thanks
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Question by:BabyFace
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Expert Comment

by:bobbit31
ID: 7073680
the ? is interpreted as a value (that's why your above example does not work) it'd have to look something more like this:

SQL = "SELECT * FROM mytable WHERE id = ? and odj = ?";
pstmt.setInt(1,23);
pstmt.setInt(2,23);


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Author Comment

by:BabyFace
ID: 7073761
Hi,
The problem is that I have a variable constaint list.
Sometimes after the WHERE clause has 1 constaint other times it may have 5 or 7 or 13 or etc...
I was wondering if preparedstatments could handle this structure?
Thanks
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Accepted Solution

by:
bobbit31 earned 100 total points
ID: 7073798
unfortunately, it doesn't...

as i stated above, the ? expects a value (bind variable)...
take a look at:
http://www.onjava.com/pub/a/onjava/2001/12/19/oraclejdbc.html

for some information on using preparedStatements vs. statements
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LVL 92

Expert Comment

by:objects
ID: 7074285
You can still use a PreparedStatement, you just have to build up your SQL yourself before create your PreparedStatement.
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