SQL queries and clauses
An Overview of the SQL Query Clauses and Functions
SQL is probably the most widely used tool in the world of Data Science, Analysis, or Engineering. In most job postings SQL is one of the common requirements. There are…
Handling NULL values in SQL
Today’s topic is missing values in a database. It is very common to get databases with some or lots of missing data in them. Missing data may make data retrieval…
Built-in Functions in SQL with Examples
In previous article on SQL, I focused only on some basic queries. This article will talk about the built-in-functions. Built-in-functions are used in the SQL statement to speed up the…
SQL Basics and Data Retrieving Techniques with Examples
SQL – stands for Structured Query Language is used to communicate with database. It is very commonly used for relational database management systems. What is relational database? Data can be…