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.

See also

References
  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. edmacauley. "char and varchar (Transact-SQL)". msdn.microsoft.com.
  4. SQL Server differences of char, nchar, varchar and nvarchar data types
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.