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27.4.4.3 The execute_prepared_stmt() Procedure

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Given an SQL statement as a string, executes it as a prepared statement. The prepared statement is deallocated after execution, so it is not subject to reuse. Thus, this procedure is useful primarily for executing dynamic statements on a one-time basis.

This procedure uses sys_execute_prepared_stmt as the prepared statement name. If that statement name exists when the procedure is called, its previous content is destroyed.

Parameters

  • in_query LONGTEXT CHARACTER SET utf8: The statement string to execute.

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Configuration Options

execute_prepared_stmt() operation can be modified using the following configuration options or their corresponding user-defined variables (see Section 27.4.2.1, “The sys_config Table”):

  • debug, @sys.debug

    If this option is ON, produce debugging output. The default is OFF.

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Example
  1. mysql> CALL sys.execute_prepared_stmt('SELECT COUNT(*) FROM mysql.user');
  2. +----------+
  3. | COUNT(*) |
  4. +----------+
  5. |       15 |
  6. +----------+

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Document created the 26/06/2006, last modified the 26/10/2018
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References

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