One strategy developers can adopt to write queries against a complex, normalised data model is to use views. The views will join together all the related tables, exposing a “flat” representation of the data that is much like a dimensional model in reporting systems. 999 more words
Tags » SQL
This code will create a .csv file of a table on your user desktop. I have to send table information quite a bit, and it’s easier to manipulate this code than to query/copy/paste in my current db set up, where each project gets its own db on a live server. 104 more words
This query demonstrates joins, grouping, the WHERE clause, and the HAVING clause.
The purpose of the data was to give the ability to select a client and a certain service code they have on record, and determine the service they have on record directly previous to the most recent one. 104 more words