Concatenating Strings in Teradata – And What to Watch Out for with Fixed Length Fields
Concatenating Strings in Teradata is fairly straightforward, but there are a few things you need to watch out for.
Populate a table by looping through items in a list / another table
Quite often, when writing queries, we want to load a table with a condition we want to pass to it (rather than hard-coding the value in the WHERE clause). Eg, load sales for a given year.
This can be easily achieved by creating a Macro, and passing a value to it…
Using RANK(), and ROW_NUMBER to Rank a field without ‘skipping’ numbers in SQL Server & Teradata
In this post, I want to cover off a little bit of RANK() usage in SQL, but then focus on how to use ranking to get a unique rank number for each row. I will cover both SQL Server and Teradata. RANK() is pretty simple to use, and works pretty much the same way in
Changing Your Teradata Password
Nice simple one today. The first thing you should ever do when granted access to any system, is change your password! Afterall, your IT policy probably a) requires you to and b) will hold you accountable for any misuse under your ID! This is simple in Teradata – you log in using your existing password,
Finding the Difference Between Two Dates in SQL
In this post, I’m going to talk about finding the difference between 2 dates in SQL. However, I’m going to cover it across multiple applications. The Problem Statement is simple: How many days are there between two dates? What we want is an integer value back of how many days there are. The solution will
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