Char, Varchar, Nchar and Nvarchar Data Types in SQL | SQL Live Training Demo Video

String Databases types in SQL - Char, Varchar , Nvarchar

Understanding VARCHAR and NVARCHAR Data Type Sizes in SQL Server

震惊！面试官让我用MySQL的varchar字段存一本小说？长度有上限吗？

【Java面试】MySQL的VARCHAR，有长度上限吗，能不能用它来存一本小说？

How to change column type Int into Varchar in SQL Server | SQL Conversion Int into Varchar

Datatypes in SQL Server (Char, Varchar, Nvarchar, Nchar) Session 1

SQL DATA TYPES: UNDERSTANDING THE DIFFERENCES BETWEEN CHAR, NCHAR, VARCHAR, AND NVARCHAR #sql