SQL Joins Simply Explained

May 1st, 2012 § Leave a Comment

As a part of my job I’m frequently “forced” to try to explain to junior (and sometimes senior) engineers how to write SQL queries (although I in no way claim that I’m a SQL Guru). What seems to need more explanation is how to use joins and I’ve found out that using simple diagrams helps the learning process. We are going to use the same method and accompany it with a simple example of two tables with two columns each. « Read the rest of this entry »

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