By Usama Dar, Visit Amazon's Hannu Krosing Page, search results, Learn about Author Central, Hannu Krosing, , Jim Mlodgenski, Kirk Roybal

Extend PostgreSQL utilizing PostgreSQL server programming to create, attempt, debug, and optimize a variety of user-defined capabilities on your favourite programming language

About This Book

  • Acquaint your self with the entire innovations to increase PostgreSQL utilizing the programming language of your selection corresponding to C++ and PL/Python
  • Work with PostgreSQL 9.4 so that you can instantly benefit from the entire advancements and new features
  • Utilize the huge code examples and plenty of novel advice and tips for max functionality gain

Who This publication Is For

This publication is for reasonable to complex PostgreSQL database pros who desire to expand PostgreSQL, using the main up to date good points of PostgreSQL 9.4. For a greater realizing of this publication, familiarity with writing SQL, a uncomplicated notion of question tuning, and a few coding adventure on your hottest language is expected.

In Detail

This e-book will exhibit you that PostgreSQL is a lot more than a database server. in truth, it could possibly also be noticeable as an software improvement framework, with the additional bonuses of transaction help, sizeable information garage, journaling, restoration, and a number of alternative positive factors that the PostgreSQL engine provides.

You gets to grips with growing libraries of valuable code, grouping them into much more necessary elements, and dispensing them to the neighborhood. Then, you are going to seriously look into user-defined capabilities, and the way to outline and make the most of them successfully. additionally, you will how to extract info from a mess of international facts assets and expand PostgreSQL to do it natively. what is extra, you are able to do all of this in a nifty debugging interface that would let you do it successfully and reliably. This booklet explores all attainable how one can expand PostgreSQL and write server-side code utilizing numerous programming languages with concrete and easy-to-understand examples.

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Additional resources for PostgreSQL Server Programming

Sample text

Postgres=# \x Expanded display is on. You can turn on the expanded mode using \x auto: postgres=# \x auto Expanded display is used automatically. There are many other things you can do in the server, which can be considered as programming. Data comparisons using operators For more complex tasks, you can define your own types, operators, and casts from one type to another, letting you actually compare apples and oranges. column? column? For example, you can set up a process where making an offer on some items is automatically reserved to them being in the stock table.

The integrity checks needed for the application can be done in a PL/pgSQL function that takes three arguments: names of the payer and the recipient and the amount to be paid. 00 (2 rows) Your application will need to check the return code and decide how to handle these errors. This will allow the restricted users to run the function as if they have higher privileges similar to the function’s creator. Take an example of the following line of code: postgres=# SELECT 1; The postgres=# part is the prompt shown by the psql command.

Take an example of the following line of code: postgres=# SELECT 1; The postgres=# part is the prompt shown by the psql command. However, the older code can easily fail to run due to one of the newly enforced restrictions. 2) Type "help" for help. postgres=# SELECT 1 AS test; test ----- 1 (1 row) You can tell when you’re seeing a regular output because it will end up showing the number of rows. 2) Type "help" for help. postgres=# \x Expanded display is on. You can turn on the expanded mode using \x auto: postgres=# \x auto Expanded display is used automatically.

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