May 2019
Intermediate to advanced
484 pages
11h 23m
English
Content preview from Learn T-SQL Querying
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Prepared statements
Another method for sending parameterized T-SQL statements to SQL Server is by using prepared statements. Leveraging prepared statements involves the following three different system procedures:
- sp_prepare: Defines the statement and parameters that are to be executed, creates an execution plan for the query, and sends a statement handle back to the caller, which can be used for subsequent executions
- sp_execute: Executes the statement defined by sp_prepare by sending the statement handle along with any parameters to SQL Server
- sp_unprepare: Discards the execution plan created by sp_prepare for the query specified by the statement handle
The first two procedures can optionally be combined into a single sp_prepexec statement ...
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