January 2005
Beginner to intermediate
928 pages
22h 14m
English
book
Understanding DB2®: Learning Visually with Examples
by Raul F. Chong, Clara Liu, Sylvia F. Qi, Dwaine R. Snow
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9.8. Summary
This chapter shows the power of SQL statements to manipulate the database data, including the SELECT, INSERT, UPDATE, and DELETE statements. In the SQL statements, you can use the DB2 special registers to obtain information about the environment such as the current date and current user connected to the database.
Besides the basic SQL statements to manipulate data, you can also use column and scalar functions, cast expressions, WHERE clauses, ORDER BY clauses, GROUP BY clauses, FETCH FIRST n ROWS ONLY options, and many other features to customize the result that you want to obtain.
It is very common that data requested is from more than one table. Inner and outer joins are used to combine data from two or more tables in a SELECT ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.