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.

⇒ Binary String Data Types in SQL Server Transact-SQL

⇐ Differences of CHAR and NCHAR in SQL Server Transact-SQL

⇑ Variables and Data Types in SQL Server Transact-SQL

⇑⇑ SQL Server Transact-SQL Tutorials

2017-04-04, 1618🔥, 0💬

Single-Byte Character Data Types in SQL Server Transact-SQL
What are single-byte character string data types supported in SQL Server Transact-SQL? Single-byte character string data types are used to hold single-byte character strings. There are 3 single-byte character string data types supported in SQL Server Transact-SQL: 1. CHAR (or CHARACTER) - Used to ho... 2017-04-08, 3541🔥, 0💬

PRINT Statements in SQL Server Transact-SQL
How to print value on console in SQL Server Transact-SQL? How to use the PRINT statements? In Transact-SQL, you can use PRINT statements to print values on the console of the client tool, in the syntax of: PRINT <value> When a PRINT statement is executed, the system will: Print the val... 2017-04-01, 2456🔥, 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, 1834🔥, 0💬

CONVERT/CAST Function in SQL Server Transact-SQL
How to convert value from one data type to another in SQL Server Transact-SQL? How to use the CONVERT function or the CAST function? In Transact-SQL, you can use CONVERT statements to convert values from one data type to another, in the syntax of: CONVERT(data_type, value[, style]) In this syntax, "... 2017-04-01, 1701🔥, 0💬

Binary String Data Types in SQL Server Transact-SQL
What are binary string data types supported in SQL Server Transact-SQL? Binary string data types are used to hold binary character strings. There are 3 binary string data types supported in SQL Server Transact-SQL: 1. BINARY - Used to hold binary strings of a fixed length, specified in the format of... 2017-04-04, 1632🔥, 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, 1619🔥, 0💬

Time-Only DATETIME Values in SQL Server Transact-SQL
What Happens If Time-Only Values Are Provided for DATETIME variables in SQL Server Transact-SQL? If only time value is provided in a DATETIME variable, the SQL Server will pad the date value with a zero, representing the base date, January 1, 1900. The tutorial exercise below gives you some good exa... 2017-04-08, 1560🔥, 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, 1527🔥, 0💬

SET Statements in SQL Server Transact-SQL
How to assign value to a variable in SQL Server Transact-SQL? How to use the SET statements? In Transact-SQL, you can use SET statements to assign values to variables using the assignment operator =, in the syntax of: SET @variable = <value> When an SET statement is executed, the syste... 2017-04-04, 1510🔥, 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.