I'm working on a Spring Boot application which queries a PostgreSQL database. I have a timestamptz column. The end users of my application would like to view these timestamps in their own timezone, with the offset included. For example, Given…
when I using jdbc api to rollback sql, it doesnot work. i wonder where is this the problem? here is the codes: connection.setAutocommit(false); statement.execute("create table xxx"); connection.rollback(); table xxx should be rollbacked.
I am trying to sink data from Kafka to Postgres and the following is what I have configured - My zookeeper, Kafka, Schema registry & Kafka Connect is working fine Even i have configured a Mongo Sink Connector which works…
I am facing a java.lang.ClassNotFoundException error with the message com.mysql.cj.jdbc.Driver when attempting to run my Java code for data insertion into a MySQL database. Surprisingly, the code compiles and runs without any errors, but the data is not being inserted…
I tried researching about this but couldn't find any answer probably because I don't really know how to tell what I'm looking for properly. I am using JDBC driver of Java to create a PreparedStatement for Postgresql. I have a…
When using JDBC to retrieve query results I use ResultSet like: ResultSet result_set = statement.executeQuery(query); In documentation it says: "A ResultSet object maintains a cursor pointing to its current row of data." meaning that if I do result_set.close() before I…
With Cassandra, if I need some specific data, all I need to do is pass the keys on join columns (with DirectJoin enabled). This works very well because is fast. But if I do a join with JDBC, first spark…
This is the code: <% try { String enteredOtp = request.getParameter("otps"); String actualOtp = (String) session.getAttribute("OTP"); if (enteredOtp.equals(actualOtp)) { String eemail = (String)session.getAttribute("eemail"); Connection con; Class.forName("com.mysql.jdbc.Driver"); con = DriverManager.getConnection("jdbc:mysql://localhost:3306/mysql","root","12345"); Statement stm = con.createStatement(); String m = "select * from empinfo…
I am trying to setup a simple JDBC client to talk with a database in Ballerina. However the "compile" ( VSCode ) error that is shown says: invalid remote method call: expected a client object, but found (ballerinax/java.jdbc:1.7.0:Client|ballerina/sql:1.7.1:Error)(BCE2421) Here is…
I need to convert latin1 charset of a table to utf8. Quoting from mysql docs: The CONVERT TO operation converts column values between the original and named character sets. This is not what you want if you have a column…