In MySQL there are three main data types: string, numeric, and date and time. A FIXED length string (can contain letters, numbers, and special characters). The size parameter specifies the column length in characters - can be from 0 to 255. Default is 1. A VARIABLE length string (can contain letters, numbers, and special characters).

Nov 6, 2024 · In the SQL Server Database Engine, each column, local variable, expression, and parameter has a related data type. A data type is an attribute that specifies the type of data that the object can hold: integer data, character data, monetary data, date and time data, binary strings, and so on.

Apr 18, 2017 · In this article, we will cover different variations of the SQL numeric data type. We'll also examine some functions that convert data from one type to another. Creating tables is the first step in any SQL coding project. You do this using DDL (Data Definition Language) statements like CREATE and DROP.

Apr 29, 2025 · SQL data types are broadly categorized into several groups: 1. Numeric Data Types. Numeric data types are fundamental to database design and are used to store numbers, whether they are integers, decimals, or floating-point numbers.

The different data types in SQL are numeric, string, date, booleans, and semi-structured. This content covers the differences between them and their subcategories.

SQL data types specify the type of data that a column or variable can hold in a SQL database. These data types include numeric, character and string, date and time, binary, boolean, enumerated, array, and JSON types. Each data type has a specific range of values and uses.

Summary: in this tutorial, you will learn about most commonly used SQL data types including character string data types, numeric data types, and date time data types. In a database, each column of a table has a specific data type.

Sep 17, 2024 · Data types define the kind of data you can store in a column (like integers, strings, or dates). Choosing the right type helps ensure data accuracy, optimize performance, and prevent potential...

Mar 19, 2025 · SQL numeric data types are used to store numeric values in a database. The most commonly used numeric data types are INT and FLOAT. The INT data type is used to store whole numbers, while the FLOAT data type is used to store decimal numbers. The INT data type can store values ranging from -2 31 to 2 31 -1.

In SQL Server, a column, variable, and parameter holds a value that associated with a type, or also known as a data type. A data type is an attribute that specifies the type of data that these objects can store. It can be an integer, character string, monetary, date and time, and so on.