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I use queries like
"UPDATE MAILSCH.MESSAGE "
+ "SET IDFOLDER=?, SUBJECT=?, CONTENT=?, CREATIONTIME=?, AD_FROM=?, AD_TO=?, STATUS=? "
+ "WHERE IDMESSAGE=?";
May I miss out IDFOLDER without changing query?
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Following are the limitations of prepared statements: Since a PreparedStatement object represents only one SQL statement at a time, we can execute only one statement by one prepared statement object. To prevent injection attacks it does not allow more than one value to a place holder.
Yes, you have to close the prepared statements ( PreparedStatement Object) and result sets as they may cause memory leakage.
You can execute a given prepared statement multiple times, passing different variables to it or setting the variables to different values before each execution.
No you can't. You need to conditionally insert that part of the SQL into the SQL string when needed.
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No, you'll have to write a second query that doesn't include the IDFOLDER column. All parameters have to be bound.
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