SQL Data Types for MySQL, SQL Server, and MS Access - W3Schools
The data type is a guideline for SQL to understand what type of data is expected inside of each column, and it also identifies how SQL will interact with the stored data. Note: Data types might have different names in different database.
MySQL Data Types - W3Schools
The data type is a guideline for SQL to understand what type of data is expected inside of each column, and it also identifies how SQL will interact with the stored data. In MySQL there are three main data types: string, numeric, and date and time.
SQL Tutorial - W3Schools
SQL is a standard language for storing, manipulating and retrieving data in databases. Our SQL tutorial will teach you how to use SQL in: MySQL, SQL Server, MS Access, Oracle, Sybase, Informix, Postgres, and other database systems.
SQL CREATE TABLE Statement - W3Schools
The column parameters specify the names of the columns of the table. The datatype parameter specifies the type of data the column can hold (e.g. varchar, integer, date, etc.). Tip: For an overview of the available data types, go to our complete Data Types Reference.
MySQL Date Functions - W3Schools
MySQL Date Data Types. MySQL comes with the following data types for storing a date or a date/time value in the database: DATE - format YYYY-MM-DD; DATETIME - format: YYYY-MM-DD HH:MI:SS; TIMESTAMP - format: YYYY-MM-DD HH:MI:SS; YEAR - format YYYY or YY; Note: The date data type are set for a column when you create a new table in your database!
SQL ALTER TABLE Statement - W3Schools
To change the data type of a column in a table, use the following syntax: SQL Server / MS Access:
JSON Data Types - W3Schools
Valid Data Types. In JSON, values must be one of the following data types: a string; a number; an object (JSON object) an array; a boolean; null
Introduction to SQL - W3Schools
Every table is broken up into smaller entities called fields. The fields in the Customers table consist of CustomerID, CustomerName, ContactName, Address, City, PostalCode and Country. A field is a column in a table that is designed to maintain specific information about …
Python Data Types - W3Schools
In programming, data type is an important concept. Variables can store data of different types, and different types can do different things. Python has the following data types built-in by default, in these categories:
HTML <input> Tag - W3Schools
The <input> tag specifies an input field where the user can enter data. The <input> element is the most important form element. The <input> element can be displayed in several ways, depending on the type attribute.