Joe Celko tackles the subject of the Stored Procedure and its place in database design. What he writes is food for thought, even for experienced database developers.
2017-10-25 (first published: 2010-08-25)
15,902 reads
A clear understanding of SQL Data Types and domains is a fundamental requirement for the Database Developer, but it is not elementary. If you select the most appropriate data type, it can sidestep a variety of errors. Furthermore, if you then define the data domains as exactly as possible via constraints, you can catch a variety of those problems that would otherwise bedevil the work of the application programmer.
2016-06-01 (first published: 2010-05-04)
28,234 reads
Having described tables, Joe Celko explains how to make them work together as a database and touches on what Entity Relationships and Views are.
2013-10-16 (first published: 2010-08-18)
19,279 reads
There are several types of tables, each with their special requirements for rules and integrity constraints. Whatever the requirement, table-level constraints will ensure that the rules are enforced and data integrity is maintained.
2013-09-18 (first published: 2010-05-25)
21,779 reads
Before you start to think about your database schema or tables, you need to consider your data: the type of data it is, the scale you use for values. It needs to be unique, precise and unambiguous. Then you need to name it in such a way that it can be generally understood. Joe Celko explains...
2013-07-03 (first published: 2010-04-27)
39,731 reads
As part of the LAMP stack, MySQL is incredibly important for providing a reliable and platform-agnostic database platform for web development. This level looks at the syntax of MySQL and how to best port SQL code to a MySQL environment.
2012-12-05
4,368 reads
Level 2 of this stairway explains how to convert data declaration language (DDL) statements and data manipulation language (DML) statements from Postgres to Microsoft SQL Server.
2012-11-14
4,889 reads
In the first level of his Stairway to SQL Dialects, Joe Celko looks at the origins of the SQL language and how the language has spawned the various different dialects in use today.
2012-10-31
6,018 reads
Joe discusses Hierarchical, Vector and Concatenation encoding before rounding up with general guidelines for designing encoding schemes.
2011-08-31
4,580 reads
Joe discusses how to deal with the kinds of encoding schemes, how to use them and how to design them. He discusses Enumeration, Measurement, Abbreviation and Algorithmic categories
2011-08-10
6,148 reads
I’m excited to announce the release of a new open-source project that fully automates...
One of my favourite features of SQL Server 2022 was the T-SQL Snapshot Backups....
By Steve Jones
I have said and written this many times: Redgate Software is the type of...
Comments posted to this topic are about the item Optional Parameter Plan Optimization in...
Comments posted to this topic are about the item AI Experience Gap that we...
There is a table tmp_tab:
CREATE TABLE tmp_tab ( id int, val int );
INSERT INTO tmp_tab VALUES (1, 1), (2, NULL), (3, 3), (4, 4), (5, 5);You want to order the rows ids by the following expression:
ISNULL(val, id) + 1Which of the following queries produces the expected ordering and why? (Select all correct) See possible answers