There are two methods in which the PreparedStatement is used. The first method is called in the second method. First method: Second method: The class in which both methods are located extends the JDBCBaseManager. JDBCBaseManager: The ResultSet in the second method still contains the results from the first method. I already tried to close the connection and open it again
Tag: jdbc
Can I use WHERE with table field on right side of LIKE?
I have a SQL table that contains prefixes of strings that I would like to match against longer strings. Suppose the column containing the prefix is called prefix. I now want to do a simple search for all rows that prefix a longer string. My first thought is to use a query that is something like this: The point in
JdbcTemplate SELECT query to get unique rows (each row with unique ID is present once)
Anyone willing to help me out with one jdbctemplate query? Need to get only rows with unique id’s but there are duplicates, because other columns, such as date have different values. I need to get the max date preferably and the resultset should not have any duplicates. 😡 output: This almost works, but not quite. There are duplicates sadly. Here’s
Java to SQL Server using Windows Authentication
I am trying to connect to a remote SQL Server DB from a Java application without success. I am able to successfully connect to that SQL Server instance from a SQL client for Mac called SQLPro for MSSQL However, if I try to connect from the Java application using those same credentials, I always get a Login failed error, this
how to set concatenated string parameter in preparedstatement
I have the following java code: I get the following exception in codeline 3-: Invalid column index What did I do wrong? how to set params correctly? Answer Take the bind parameters out of the string literal: Or, create a single bind parameter and pass in the concatenated value:
UPDATE with RETURNING: Not able to retrieve ResultSet
I’ve tested the following UPDATE-RETURNING statement in my PostgreSQL client, and it correctly updates and returns the updated rows. However, in Java, I’m not able to retrieve the ResultSet. statement.execute() and statement.getMoreResults() always return false and statement.getResultSet() returns null, always. Am I missing something here? Answer Well, I wasn’t really able to solve this properly. However, I ended up using
Reading and Writing UTC to TIMESTAMP in Postgresql
I have a Java application that inserts data into a database using prepared statements. In the preparedStamement date is set in UTC format. I want to be sure that when read and write operations execute on the table, the response should ALWAYS be in UTC format. At the below query, when the data is read it will be converted to
Getting the data from SQL and inserting it inside the Java Textfield
I’ve been trying to get the data from the SQL and insert it inside the JTextfield. This code is in the button action, but when I clicked the button, there is nothing happening. Answer I redo my JFrame and rewrite this code. There is no problem with this code. I think it just override because I copied the previous JFrame.
Is a rollback necessary when insert of a single database record fails?
I am not too familiar with database transactions. I was wondering about a situation where a single record is being inserted into a database. Is a transaction necessary. If so, if the insert of the one record fails, is a rollback necessary? I am asking this related to JDBC but is can be in a general database sense. Answer From
Why is it not updating
I’m trying to update my database where in the Book copies will be updated to 5 depending on the Book code. The Book copies I initialize in the database was 10. For now, I have a fixed value of 5 to change it. My plan is to decrement the copies by 1 if users borrowed it. But for now, I’m