By Anthony Molinaro
You understand the rudiments of the SQL question language, but you are feeling you are not taking complete benefit of SQL's expressive energy. you would like to profit the right way to do extra paintings with SQL contained in the database ahead of pushing info around the community for your purposes. you want to take your SQL abilities to the following level.
Let's face it, SQL is a deceptively uncomplicated language to profit, and lots of database builders by no means pass some distance past the easy assertion: decide upon columns FROM desk the place stipulations. yet there's so even more you are able to do with the language. within the SQL Cookbook, skilled SQL developer Anthony Molinaro stocks his favourite SQL ideas and contours. you are going to research about:
- Window features, arguably the main major enhancement to SQL some time past decade. if you are now not utilizing those, you are lacking out
- Powerful, database-specific beneficial properties equivalent to SQL Server's PIVOT and UNPIVOT operators, Oracle's version clause, and PostgreSQL's very precious GENERATE_SERIES function
- Pivoting rows into columns, reverse-pivoting columns into rows, utilizing pivoting to facilitate inter-row calculations, and double-pivoting a consequence set
- Bucketization, and why you want to by no means use that time period in Brooklyn.
- How to create histograms, summarize information into buckets, practice aggregations over a relocating diversity of values, generate running-totals and subtotals, and different complex, information warehousing techniques
- The means of walking a string, which lets you use SQL to parse in the course of the characters, phrases, or delimited parts of a string
Written in O'Reilly's renowned Problem/Solution/Discussion variety, the SQL Cookbook is bound to delight. Anthony's credo is: "When it comes all the way down to it, all of us visit paintings, all of us have money owed to pay, and all of us are looking to cross domestic at an affordable time and revel in what is nonetheless on hand of our days." The SQL Cookbook strikes fast from challenge to resolution, saving you time each one step of the way.
Read or Download SQL Cookbook: Query Solutions and Techniques for Database Developers (Cookbooks (O'Reilly)) PDF
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