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Mikael Ahonen

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Mikael Ahonen

Inspiration | Attitude | Stories

  • Blog
    • Data Science
    • Software
    • Business
    • Self improvement
    • Free time
    • Society
  • Mikael
  • Business
    • Microsoft Excel
    • Pipedrive CRM
  • English
    • Suomi
    • English
    • Svenska

Mikael Ahonen

Inspiration | Attitude | Stories

Tag: databases and sql

Articles related to databases. The best known open source structured databases are PostgreSQL, MySQL and SQLite.

SQL (Structured Query Language) is a query language to retrieve a specified dataset from a database. With SQL it is possible to fetch selected columns, rows with given conditions and order the results.

Clustering time series data with SQL. The purpose is to prove that doing data science doesn't always require fancy tools. Examples in this repository might be helpful, if you must use SQL instead of proper data science tools such as python. Thus this repository is not a comprehensive guide for time series data clustering. Even though clustering is often connected to machine learning, this showcase relies only on logical decision making. I have focused on IoT related data in the field of predictive maintenance.
10.11.201910.11.2019Data Science

Clustering data using SQL – An example with industrial IoT data

Clustering time series data with SQL – Nice 3D visualization using simple logic. Python notebook example in GitHub with industrial data.

AWS Glue service works especially well for big data batch processing.
01.09.201901.09.2019Data Science

Introduction to AWS Glue for big data ETL

AWS Glue service works especially well for big data batch processing. Read the full post from data.solita.fi.

Tables, sort and filter in Excel
01.11.201608.02.2022Free Excel course, Software

Lecture 7 – Tables, sorting and filtering in Excel

In Excel’s table object you can sort, filter and summarize data effortlessly as well as select the formatting that fits your needs.

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