2022年6月21日 · VARCHAR is efficient for non-Unicode text up to 8,000 characters, while VARCHAR(MAX) handling larger text data up to 2 GB. NVARCHAR supports Unicode data, making it suitable for multilingual applications.

VARCHAR(size) A VARIABLE length string (can contain letters, numbers, and special characters). The size parameter specifies the maximum string length in characters - can be from 0 to 65535

2009年12月11日 · VARCHAR is variable-length. CHAR is fixed length. If your content is a fixed size, you'll get better performance with CHAR. See the MySQL page on CHAR and VARCHAR Types for a detailed explanation (be sure to also read the comments).

2024年11月22日 · Character data types that are either fixed-size, char, or variable-size, varchar. Starting with SQL Server 2019 (15.x), when a UTF-8 enabled collation is used, these data types store the full range of Unicode character data, and use the UTF-8 character encoding.

2021年12月13日 · The VARCHAR data type is used to store character string data. We use this data type when the size of the values we want to store will vary greatly. We’ll learn how VARCHAR is great for storing character string data in an efficient way. The syntax for VARCHAR is very simple. An example would be VARCHAR(20).

In SQL, VARCHAR is a data type used to represent character string values of variable length. The term VARCHAR stands for Variable Character. It is one of the most commonly used data types in SQL, especially for storing textual data such as names, addresses, and descriptions.

2019年5月29日 · We’ll review the SQL varchar data type including a basic definition and overview, differences from varchar(n), performance considerations and more

2024年8月12日 · In SQL Server, VARCHAR, VARCHAR(MAX) and NVARCHAR are used to store variable-length text data. VARCHAR is efficient for non-Unicode text up to 8,000 characters, while VARCHAR(MAX) handling larger text data up to 2 GB. NVARCHAR supports Unicode data, making it suitable for multilingual applications.

SQL Server VARCHAR data type is used to store variable-length, non-Unicode string data. The following illustrates the syntax: Code language: SQL (Structured Query Language) (sql) In this syntax, n defines the string length that ranges from 1 to …

VARCHAR data type stores variable-length character data in single-byte and multibyte character sets. Stored and retrieved if data contains them. Insignificant in comparisons, Versions: MySQL 5.x. Related data types for VARCHAR in MySQL: