I have the following row in my MySQL Table: https://i.stack.imgur.com/u0FC4.png This column is represented as: And it is bound to a Thymeleaf form like so: Now if I insert a date into the MySQL db directly, the date is loaded and set to the correct date on the form: https://i.stack.imgur.com/e35lr.png But eve…
Tag: java
JOOQ “IN” Query throws null pointer exception
When we try to fetch data with Null values field(TABLE_NAME.COLUMN_NAME.in(null)) with IN clause getting null pointer exception. Maybe because of this. In the database, we can provide null in IN clause. There is an existing “won’t fix” issue in jooq https://github.com/jOOQ/jOOQ/issues/3867 T…
SQL query is only returning one entry, when it should be returning several
I am creating a book tagging system and I am trying to call all the books with the same tag. My query is only turning up the first book, and not any of the following books with the same tag. Here is …
IDENTITY is red underlined while trying to create a table in SQL
I’m a Java student and I was trying to create a table for my database web app project. So I used IDENTITY(1,1) to get the id start from 1 and auto increment by 1. But IDENTITY is underlined and I do not know why. Also when I try to run the code I get this Output : Answer You have
Insert values into Database with Java
Hello I have a Jtable and a JFormattedTextField where I input the values to insert into the database. I used PreparedStatement but the output gives an error [SQL0418] Utilização de marcador de …
What is the best way to update data in database using Native Query
Here if one of data in rule object is null apart from rule_id(As it’s necessary) this query will fail, so instead I can format string for each value in Rule object and concat them excluding which has null value in Rule object but is there any better way to do this? Because if there are 100s of columns t…
How to add to INSERT INTO PRIMARY KEY AND FOREIGN KEY
So i have two tables: locations and employees i want locations_id to be the same in employees.locations_id, I am trying to make it all in one statement the erros is this You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘…
Populate DTO using query with JOIN
I have this main Product table: Additional table for storing categories that should be returned as List: Additional table for storing Payment Methods that should be returned as List: I want to return a result like this: I tried this: What is the proper way to populate this DTO? Answer If, as indicated in your…
How to reset a session in a sql connection pool?
i have a connection pool using javax.sql.DataSource and PostgreSQL JDBC. The process is simple, I’m taking a virtual connection from connection pool, process it, then close the virtual connection (…
Custom cell button action to Download a file to the ‘downloads’ folder
so I have managed to build my custom cell which holds a button to download a file from my local database. somehow all seems fine but when i run and try to download, I get an sql error that there’s a …