SET FMTONLY (Transact-SQL)
Applies To: SQL Server 2014, SQL Server 2016 Preview
Returns only metadata to the client. Can be used to test the format of the response without actually running the query.
Do not use this feature. This feature has been replaced by sp_describe_first_result_set (Transact-SQL), sp_describe_undeclared_parameters (Transact-SQL), sys.dm_exec_describe_first_result_set (Transact-SQL), and sys.dm_exec_describe_first_result_set_for_object (Transact-SQL).
Applies to: SQL Server (SQL Server 2008 through current version), Azure SQL Database, Azure SQL Data Warehouse Public Preview.
No rows are processed or sent to the client because of the request when SET FMTONLY is turned ON.
The setting of SET FMTONLY is set at execute or run time and not at parse time.
Requires membership in the public role.
The following example changes the SET FMTONLY setting to ON and executes a SELECT statement. The setting causes the statement to return the column information only; no rows of data are returned.
USE AdventureWorks2012; GO SET FMTONLY ON; GO SELECT * FROM HumanResources.Employee; GO SET FMTONLY OFF; GO