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sp_unprepare (Transact-SQL)

Discards the execution plan created by the sp_prepare stored procedure. sp_unprepare is invoked by specifying ID = 15 in a tabular data stream (TDS) packet.

Applies to: SQL Server (SQL Server 2008 through current version).

sp_unprepare handle         

handle

Is the handle value returned by sp_prepare.

The following example prepares, executes, and unprepares a simple statement.

Declare @P1 int;
Exec sp_prepare @P1 output, 
    N'@P1 nvarchar(128), @P2 nvarchar(100)',
    N'SELECT database_id, name FROM sys.databases WHERE name=@P1 AND state_desc = @P2';
Exec sp_execute @P1, N'tempdb', N'ONLINE';
EXEC sp_unprepare @P1;

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