SQL Server - Differences of CHAR and VARCHAR in SQL Server Transact-SQL

Differences of CHAR and VARCHAR in SQL Server Transact-SQL

Q

What Are the Differences between CHAR and VARCHAR in SQL Server Transact-SQL?

✍: FYIcenter.com

A

CHAR and VARCHAR are both used to store code page based 1-byte character strings in Transact-SQL. But they have the following main differences:

CHAR(n) stores character strings with a fixed length, n bytes, storage format.
VARCHAR(n) stores character strings with a variable length, less than n bytes, storage format.
If the input string of CHAR(n) has less than n bytes, it will be padded with space characters to become n bytes.
If the input string of VARCHAR(n) has less than n bytes, it will not be padded with any characters.
If the input string of CHAR(n) has more than n bytes, it will be truncated to n bytes.
If the input string of VARCHAR(n) has more than n bytes, it will also be truncated to n bytes.

⇒Variables and Data Types in SQL Server Transact-SQL

⇒⇒SQL Server Transact-SQL Tutorials

2017-04-04, 752👍, 0💬

Unicode Character Data Types in SQL Server Transact-SQL
What are Unicode character string data types supported in SQL Server Transact-SQL? Unicode character string data types are used to hold Unicode character strings. There are 3 Unicode character string data types supported in SQL Server Transact-SQL: 1. NCHAR (or NATIONAL CHAR, or NATIONAL CHARACTER) ... 2017-04-08, 791👍, 0💬

DECLARE Statements in SQL Server Transact-SQL
How to declare a variable in SQL Server Transact-SQL? How to use the DECLARE statements? In Transact-SQL, you must use DECLARE statements to declare variables. Declaring a variable is to define the variable name and the variable data type. In Transact-SQL, you can: Declare a single variable in a sin... 2017-04-04, 776👍, 0💬

Differences of CHAR and VARCHAR in SQL Server Transact-SQL
What Are the Differences between CHAR and VARCHAR in SQL Server Transact-SQL? CHAR and VARCHAR are both used to store code page based 1-byte character strings in Transact-SQL. But they have the following main differences: CHAR(n) stores character strings with a fixed length, n bytes, storage format.... 2017-04-04, 753👍, 0💬

Differences of CHAR and NCHAR in SQL Server Transact-SQL
What Are the Differences between CHAR and NCHAR in SQL Server Transact-SQL? Both CHAR and NCHAR are fixed length data types in Transact-SQL. But they have the following main differences: CHAR stores characters based on the code page with 1 byte per character most of the time. NCHAR stores characters... 2017-04-04, 674👍, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.