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Month: March 2021

All Things SQL 

5 Reasons Why We Should Use SQL Views

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SQL views are very powerful when used properly. They allow us to store our SQL queries into virtualized containers (aka

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All Things Cloud 

Top 8 Cloud Database Leaders in 2021

0 Comments cloud database leaders, cloud databases, top cloud databases

In the never-ending data landscape it’s important to keep up with the leaders in the database space. If a database

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Snowflake 

Quick & Dirty: What is a Snowflake Database?

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Over the last few years the demand for a new database built in the cloud has skyrocketed. In 2020 Snowflake

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All Things SQL 

DML vs DDL Using SQL – What’s The Difference?

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To first understand the key differences between DML and DDL when writing SQL we should define what these two acronyms

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Oracle 

What’s an Oracle Outer Join? – Using the Plus Sign

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You may be familiar with SQL and how to write a query using the LEFT, RIGHT, and FULL OUTER keywords.

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Microsoft 

What is SSMS? SQL Server Management Studio

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If you’re new to the Microsoft database world you might not be familiar with SSMS otherwise known as SQL Server

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All Things SQL 

What Does SQL Stand For? – Structured Query Language

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SQL – otherwise known as “sequel” – is a database programming language used to find answers in a database. There

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Start Learning SQL

  • SELECT – Start Here
  • DISTINCT and COUNT – The Basics
  • WHERE – Using Filters
  • AND Versus OR Operators
  • Parentheses – Order of Operations
  • JOIN – Inner Join and Aliases
  • WHERE – Joining Tables
  • JOIN – Left, Right, and Full Outer
  • GROUP BY – Count, Sum, and More
  • HAVING – Filtering Aggregates
  • ORDER BY – Sorting Results
  • UNION ALL – Combining Datasets
  • MINUS – Subtracting Datasets

Advanced SQL

  • CAST & CONVERT – Modifying Data Types
  • CONCAT – Combining Multiple Columns
  • INSERT – Using SELECT Statement
  • CASE Statement – Replacing If-Else
  • LEAD() Function – Getting Next Values
  • LAG() Function – Getting Previous Values

DML & DDL Examples

  • DDL vs DML – A Comparison
  • CREATE TABLE – Examples
  • ALTER TABLE – Add, Drop, & Modify Columns
  • TRUNCATE vs DELETE – Erasing Tables
  • DROP – Tables, Views, Etc. – Deleting Objects

Common SQL Problems

  • Finding Duplicates
  • Getting Today’s Date

Data Warehousing

  • Fact Tables vs Dimension Tables
  • Slowly Changing Dimensions
  • OLAP vs OLTP Databases
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