A common SQL habit is to use SELECT * on a query, because it’s tedious to list all the columns you need. Plus, sometimes those columns may change over time, so why not just do things the easy way? But ...
I have to design a SQL query on an Oracle 10 DB. I want to do it in an elegant way and avoid, if possible, using sub-queries and in the most portable way possible. Basically it's query involving 3 ...
SQL is a convenient way to manage and query your data, but badly written queries can tie up your database. Here are seven common SQL traps and how to avoid them. Database developers have it tough.
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