Some random thoughts on life, science, technology, data - just about anything really … oh, and some muddy dogs :-)
Random Thoughts … and Muddy Dogs
Jamie Whitehorn
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Using Teradata SQL: Finding a person's age

How to calculate a person's age correctly given a date and their date of birth in Teradata SQL.

Jamie Whitehorn
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Time Management - Categories, Activities and Contexts

Time manangement is one of those things I return to from time to time. We're always being told that we need to be more efficient with our time ⏱. It's a limited resource and we need to maximise it. The problem is I've never found a system that works for me.

Jamie Whitehorn
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Can I answer the question I'm asking, with the data I have?

When you look at data, one of the most important you need to consider is "Can I answer the question I'm asking, with the data I have?" ... and be prepared to be creative.

Jamie Whitehorn
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Using Teradata SQL: Check the size of tables in a database

Some useful SQL that lets you find how much disk space your database and tables are actually using.

Jamie Whitehorn
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Using Teradata SQL: Create a reference table for human generations

Useful SQL to create a reference table of human generations like Millennial, Generation X, Baby Boomer etc with start and end dates.

Jamie Whitehorn
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Using Teradata SQL: How to find all the tables in a database or user area

This SQL lets you find all the tables in a particular database or your user area (your personal database) in Teradata, or table names that match a pattern.

Jamie Whitehorn
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Using Teradata SQL: Find the difference between two timestamps and express as hours

How to compare two timestamps in SQL and express the result in hours.

Jamie Whitehorn
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Dogs and hot houses

With hot weather looming, we have some tips on how to keep your house cool when you have dogs but don't have air-conditioning.

Jamie Whitehorn
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Using Excel: How to count unique values

How to count unique values in a table or other data range in Excel. Includes a quick method for numbers, and a slower generic method that works with text.

Jamie Whitehorn
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Hacking a Davis Wireless Vantage Pro 2 Weather Station: Part 2 - the basic hardware

Part 2 deals with the basic hardware you need to hack the Davis VP2 ISS by intercepting the radio signals and shows the basic premise works.

Jamie Whitehorn
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Using Teradata SQL: How to find the number of AMPs and Nodes

How to find the number of AMPs and Nodes in a Teradata installation using a simple SQL query.

Jamie Whitehorn
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Using Teradata SQL: How to drop (aka delete) a lot of tables at once

This SQL creates a series of commands that can be used to DROP (aka delete) all the TABLES that match a pattern or username.