Varchar

A VARCHAR or variable character field is a set of character data of indeterminate length. The term varchar refers to a data type of a field (or column) in a database which can hold letters and numbers. Varchar fields can be of any size up to a limit, which varies by databases: an Oracle 11g database has a limit of 4000 bytes,^[1] a MySQL 5.7 database has a limit of 65,535 bytes (for the entire row)^[2] and Microsoft SQL Server 2008 has a limit of 8000 bytes (unless varchar(max) is used, which has a maximum storage capacity of 2 gigabytes).^[3]

nvarchar is a variation of varchar,^[4] and which is more suitable depends on the use case.^{[clarification needed]}

References[edit]

^ "Database Concepts". docs.oracle.com.
^ "MySQL :: MySQL 5.7 Reference Manual :: 11.4.1 The CHAR and VARCHAR Types". dev.mysql.com.
^ edmacauley. "char and varchar (Transact-SQL)". msdn.microsoft.com.
^ SQL Server differences of char, nchar, varchar and nvarchar data types

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[1] "Database Concepts". docs.oracle.com.

[2] "MySQL :: MySQL 5.7 Reference Manual :: 11.4.1 The CHAR and VARCHAR Types". dev.mysql.com.

[3] uley. "char and varchar (Transact-SQL)". msdn.microsoft.com.

[4] SQL Server differences of char, nchar, varchar and nvarchar data types

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