Join Sheeri Cabral for an in-depth discussion in this video Using PIVOT tables, part of Understanding MariaDB for MySQL Users.
…The CONNECT storage engine can do much more than just connect to outside sources.…One of the fascinating features of the CONNECT storage engine is that it can…be used to create a pivot table.…A pivot table is a way of summarizing data.…For example, let's take a look at the contributors.csv example file.…With more /var/tmp/contributors.csv.…This file represents contributions made by community members.…Each line in the file starts with a source for the contribution,…the date the contribution was made, and the number of total contributors.…
If we look for March 17th throughout the file, we can see that there…are entries for the support system, the ticketing system, and code contributions.…What if we wanted to see this data summarized?…Instead of three rows that represent the same date,…what if we want the data to look like this?…So that each row contains the date and the number of total contributions for…the three sources.…This is what a pivot table can do.…To make our example easy,…let's first use connect to create a base table with the data in our CSV file.…
- Why use dynamic columns?
- Creating, updating, and querying dynamic columns
- Installing the CONNECT storage engine
- Connecting to remote data
- Connecting to CSV, INI, and XML files
- Using PIVOT tables
- Accessing database metadata
- Working with the Cassandra storage engine
Skill Level Intermediate
Ruby on Rails 4 Essential Trainingwith Kevin Skoglund12h 41m Beginner
1. Dynamic Columns
2. The Power of CONNECT
3. Advanced CONNECT Storage Engine
4. The Cassandra Storage Engine
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