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Applies To: SQL Server 2014, SQL Server 2016 Preview

Topic Status: Some information in this topic is preview and subject to change in future releases. Preview information describes new features or changes to existing features in Microsoft SQL Server 2016 Community Technology Preview 2 (CTP2).

Returns a Unicode string with the delimiters added to make the input string a valid SQL Server delimited identifier.

Applies to: SQL Server (SQL Server 2008 through current version), Azure SQL Database, Azure SQL Data Warehouse Public Preview.

Topic link icon Transact-SQL Syntax Conventions

QUOTENAME ( 'character_string' [ , 'quote_character' ] ) 


Is a string of Unicode character data. character_string is sysname and is limited to 128 characters. Inputs greater than 128 characters return NULL.


Is a one-character string to use as the delimiter. Can be a single quotation mark ( ' ), a left or right bracket ( [ ] ), or a double quotation mark ( " ). If quote_character is not specified, brackets are used.


The following example takes the character string abc[]def and uses the [ and ] characters to create a valid SQL Server delimited identifier.


Here is the result set.


(1 row(s) affected)

Notice that the right bracket in the string abc[]def is doubled to indicate an escape character.

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