sql server

A Scala JDBC connection and SQL SELECT example alvin November 8, 2011 - 12:29pm

Scala JDBC FAQ: How can I use the Java JDBC API in my Scala application?

If you want to use a SQL database with your Scala applications, it's good to know you can still use the traditional Java JDBC programming library to access databases. I just ran a simple JDBC connection and SQL SELECT test, and everything seems to work just as it does in Java.

Java JDBC connection string examples

Java JDBC FAQ: Can you share Java JDBC connection string examples for the most popular relational databases?

Some days we all need something simple, and today I needed the example syntax for a JDBC connection string (the JDBC URL) for MySQL and Postgresql databases. While I was digging through my old examples, I found JDBC connection string examples for other databases, and thought I'd share them all here.

Java JDBC drivers and driver downloads

In need of a Java JDBC driver for your database? I thought I'd put together a quick list here showing the URLs where you can download the latest JDBC drivers for databases like Postgresql (Postgres), MySQL, and Microsoft SQL Server.

MySQL JDBC driver

MySQL Connector/J is the official MySQL JDBC driver. Here's a link to their JDBC driver: 

How to perform a SQL query for fields that are null (or not null)

For some reason I can never remember how to search for database table fields that are either NULL or NOT NULL. I always try to use the = operator or something else.

So, for myself, here’s an example of how to perform a SQL query and find all records where a field in a database table is NULL:

SELECT * FROM foo WHERE bar IS NULL;

And here’s how to perform a SQL query showing all records in a database table where a column is NOT NULL: