SQL Server Specification Limits – Maximum size allowed for STRING Data Types

By Santhosh N

This explains the maximum size of the STRING Data type Columns’ value allowed by the SQL Server.

Like any language or to be more specific on Data types, there is always upper limit of the size that it is allowed and SQL Server is no exception in terms of maximum size that is allowed for the following Data Types.

Data Type Length in Bytes Characters Allowed
SHORT STRING 8,000 8,000
VARCHAR 2^31-1 (2,147,483,647) 2,147,483,647
VARBINARY 2^31-1 (2,147,483,647) 2,147,483,647
XML 2^31-1 (2,147,483,647) 2,147,483,647
TEXT 2^31-1 (2,147,483,647) 2,147,483,647
IMAGE 2^31-1 (2,147,483,647)
NTEXT 2^31-1 (2,147,483,647) 1,073,741,822
NVARCHAR 2^31-1 (2,147,483,647) 1,073,741,822

Note: This hold common for both 32-bit and 64-bit SQL Server.

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