Integer Data Types
Working with Integer Data Types. In this post, we discuss the different number or integer data types available in SQL Server.
Writing SQL
Date and Time Data Types
Working with Date and Time Data Types. In this post, we discuss using both the Data and Time data types in SQL Server.
Working with Time Precision
Working with Time Precision. How to efficiently support time precision in SQL Server. Data types are important to understand as they can save space on your hard drive, memory, and network.
Data Type Conversion
Using the CAST and CONVERT functions to convert data types in SQL Server. What are the differences between the two functions to convert data types in a T-SQL statement?
What is a Function?
What is a SQL Function and how to use a function in a T-SQL statement? We use the GetDate() and LEFT() functions as examples.
Using Aggregate Functions
How to use the COUNT, MAX, AVG, and SUM Aggregate Functions in a T-SQL statement.
NULL Values and Aggregate Functions
How to work with NULL values in Aggregate Functions in a T-SQL statement. How to fix issues with NULL values with the AVG() and COUNT() functions.
SQL COALESCE Function
The SQL Coalesce function is used when you want to combine values from a series of columns or expressions when they might contain NULL values.
Working with Batches
Working with Batches in SQL Server, What are the differences between batches and transactions?
Data Manipulation Language (DML)
What is the data manipulation language (DML)? How to write the INSERT, UPDATE, and DELETE statements in T-SQL.