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This article will explain in detail how to obtain the content length of the TEXT field in the MSSQL database. The content of the article is of high quality, so the editor shares it for you as a reference. I hope you will have a certain understanding of the relevant knowledge after reading this article.

DATALENGTH is used to return the number of bytes occupied by any expression.

Syntax: DATALENGTH (expression)

Parameter: expression, any type of expression.

Return type: int

Note: DATALENGTH is particularly useful for varchar, varbinary, text, image, nvarchar, and ntext data types because these data types can store variable length data. The result of NULL's DATALENGTH is NULL

Returns the number of characters in a character expression. If the string contains leading and trailing spaces, the function includes them in the count. LEN returns the same value for the same single-byte and double-byte strings.

LEN (character_expression), an expression of type string

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