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sp_unprepare (Transact-SQL)

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Applies to: SQL Server Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW)

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.

Syntax

sp_unprepare handle
[ ; ]

Arguments

handle

The handle value returned by sp_prepare. handle is int.

Examples

The following example prepares, executes, and unprepares a basic 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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