jdbc

recent blog posts related to java and jdbc, including databases like mysql and postgresql

Case insensitive SQL SELECT query examples

Case insensitive SQL SELECT query FAQ: How do I issue SQL SELECT queries while ignoring case (ignoring whether a string is uppercase or lowercase)?

When I first started writing SQL queries, I did some pretty crazy things to try to ignore case in my text/string queries. Unfortunately for me, I first started with Postgresql, and used some of their custom regular expression capabilities. That seemed like a good idea at the time, but when I tried to move my application to a MySQL database, I paid a price in having to rewrite my case-insensitive SQL queries.

By Alvin Alexander on March 10, 2013

A Java DB2 JDBC Driver class and URL example

Here's a quick post to help anyone that needs a quick Driver and URL reference when using DB2 with Java and JDBC.

If all you need is a reference to the DB2 JDBC Driver and URL connection string syntax, this basic information should work:

By Alvin Alexander on October 17, 2012

A Java JDBC SQL Server Driver class and URL example

Here's a quick post to help anyone that needs a quick JDBC Driver and URL reference when using Microsoft SQL Server with Java and JDBC.

The basic SQL Server JDBC Driver and URL information you need is shown here:

By Alvin Alexander on May 20, 2013

Java MySQL JDBC Driver class and URL example

Java MySQL Driver FAQ: Can you share a Java/MySQL JDBC Driver and URL example, i.e., how to connect to MySQL in Java?

Sure. Here's a quick JDBC MySQL Driver post to help anyone that needs a quick MySQL JDBC Driver and URL reference when using MySQL with Java.

The basic MySQL JDBC Driver and Java MySQL URL information you need is shown here:

By Alvin Alexander on May 8, 2013

Java JDBC Postgresql Driver class and URL example

Here's a quick post to help anyone that needs a quick JDBC Driver and URL reference when using Postgresql (Postgres) with Java (and JDBC).

The basic Postgresql JDBC Driver and URL information you need is shown here:

By Alvin Alexander on May 8, 2013

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.

By Alvin Alexander on May 20, 2013

Spring JDBC - How to retrieve the auto-generated database key after an INSERT

Spring JDBC FAQ: How do I retrieve the auto-generated database key for a serial field (also known as an auto_increment field in MySQL) after I perform a SQL INSERT using Spring JDBC?

By Alvin Alexander on November 30, 2011

Spring Dao - Spring JDBC DELETE examples

Spring JDBC DELETE FAQ: Can you provide some examples of using SQL DELETE queries using Spring JDBC (Spring Dao classes and methods)?

Here are a few Spring Dao examples, specifically JDBC/SQL DELETE examples.

Spring JDBC delete example #1: Delete a record by the primary key

In this first Spring JDBC DELETE example, I pass in an id parameter, which represents the primary key in my hosts database table. This JDBC/SQL statement deletes the record from that table that matches that id field.

By Alvin Alexander on October 17, 2012

A Spring JDBC SELECT and INSERT example

A Spring JDBC SELECT and INSERT example: Here's the source code for a complete Spring DAO class from a project that I'm currently working on (a Java-based web interface to the open source Nagios project) that shows how to use a few Spring JDBC methods, including both a SELECT example and a simple INSERT example.

I'll add more examples to this site later (and with more introduction/description), but for now I'm just going to drop this Java class sample out here and hope that it helps you "Learn Spring JDBC by example".

By Alvin Alexander on October 17, 2012

Java JDBC example - connect to a Postgres database

I don't know if this Java/JDBC sample program will help anyone, but I thought I'd share it here. It's a variation of a program I use to connect to a JDBC database (in this case a Postgresql database) whenever I need to look at some information. In this particular case I wrote the program because I didn't have access to the psql command-line tool, so I created this Java program, compiled it, and ran it to see what I wanted to see.

By Alvin Alexander on November 3, 2012
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