SQL PROGRAMMING STYLE- P46 doc

... http://www.ambysoft.com/javaCodingStandards.html associated JavaDoc comment. 80. All public classes and public and protected functions within public classes should be documented using the Java documentation (javadoc) conventions. This ... if (isDone) doCleanup(); doCleanup(); This is for debugging purposes. When writing on a single line, it is not apparent whether the test is really...

Ngày tải lên: 19/01/2014, 16:20

... programmers. My goals in this book are to improve SQL programming style and proficiency. To be more exact: 1. To help an individual programmer write Standard SQL without an accent or a dialect . ... other SQLs, cannot be easily understood by an end user, and cannot be expanded. In the second case, what some newbies, who are still thinking in terms of second- and third-generati...

Ngày tải lên: 10/04/2014, 09:40

... [NOCOPY] sql_ data_type | plsql_data_type , parameter2 [IN][OUT] [NOCOPY] sql_ data_type | plsql_data_type , parameter(n+1) [IN][OUT] [NOCOPY] sql_ data_type | plsql_data_type )] RETURN [ sql_ data_type ... operating system–independent programming environment. SQL statements are natively integrated in the PL /SQL language. You can also call PL /SQL directly from the command-line...

Ngày tải lên: 25/01/2014, 14:20

... 164 4.4.13 Bitemporal Tables 164 4.4.14 Temporal Support in Standard SQL 167 5 Character Data Types in SQL 169 5.1 Problems with SQL Strings 170 5.1.1 Problems of String Equality 170 5.1.2 Problems ... editions before it, is for the working SQL programmer who wants to pick up some advanced programming tips and techniques. It assumes that the reader is an SQL programmer with...

Ngày tải lên: 27/06/2014, 12:20

... the software to execute SQL commands. Finally, I sincerely hope that this book has served as a useful guide into the world of SQL. At the start of the book, I mentioned that SQL involves both logic ... take a look at Appendices A, B, and C to get some tips on how to get started with Microsoft SQL Server, MySQL, or Oracle. These appendices provide instructions on how to install the free...

Ngày tải lên: 05/07/2014, 05:20

... SQL for Smarties: Advanced SQL Programming , Second Edition, Joe Celko • Joe Celko’s Data and Databases: Concepts in Practice , Joe Celko JOE CELKO’S SQL FOR SMARTIES: ADVANCED SQL ... Micheline Kamber • Understanding SQL and Java Together: A Guide to SQLJ, JDBC, and Related Technologies , Jim Melton and Andrew Eisenberg • Database: Principles, Programming, and...

Ngày tải lên: 06/07/2014, 09:20

... turmoil, the ANSI/ISO Standard SQL- 92 is still the common subset that will port across various SQL products to do useful work. In fact, the U.S. Government described the SQL- 99 standard as “a standard ... and required SQL- 92 conformance for federal contracts. The reason for the loyalty to SQL- 92 is simple. The FIPS-127 conformance test suite was in place during the development...

Ngày tải lên: 06/07/2014, 09:20

... ROLLBACK; ELSE COMMIT; END IF; But being a fanatic, I want a pure SQL solution that is declarative within the limits of most current SQL products. Let’s create two tables. This first table is a ... new_ssn CHAR(9), IN new_start_date DATE, IN new_end_date DATE, IN new_job_type INTEGER) LANGUAGE SQL IF new_job_typ <> 99 THEN INSERT INTO Job_not99_Assignments VALUES (store_nbr,...

Ngày tải lên: 06/07/2014, 09:20

... used in SQL- 92, which usually means it is in the FROM clause. The columnar subquery returns a table with a single column in it. This was the important one in the original SQL- 86 and SQL- 89 ... constructed using the VALUES() expression. New SQL programmers think that this is only an option in the INSERT INTO statement. However, Standard SQL allows you to use it to build a row...

Ngày tải lên: 06/07/2014, 09:20

... However, an SQL database can use the same mechanisms in the SQL compiler for both constructions. 15.6 EXISTS and Three-Valued Logic This example is due to an article by Lee Fesperman at FirstSQL. ... that has not shipped us anything? In Standard SQL, the empty result table is converted to a NULL of the appropriate data type. In Standard SQL, you can place scalar or row...

Ngày tải lên: 06/07/2014, 09:20