Function execute_create_procedure 

pub fn execute_create_procedure(
    stmt: &CreateProcedureStmt,
    db: &mut Database,
) -> Result<(), ExecutorError>

Execute CREATE PROCEDURE statement (SQL:1999 Feature P001)

Creates a stored procedure in the database catalog with optional characteristics.

Parameters

Procedures support three parameter modes:

• IN: Input-only parameters (read by procedure)
• OUT: Output-only parameters (written by procedure to session variables)
• INOUT: Both input and output (read and written)

Characteristics (Phase 6)

• SQL SECURITY: DEFINER (default) or INVOKER
• COMMENT: Documentation string
• LANGUAGE: SQL (only supported language)

Example

CREATE PROCEDURE calculate_stats(
  IN input_value INT,
  OUT sum_result INT,
  OUT count_result INT
)
  SQL SECURITY INVOKER
  COMMENT 'Calculate sum and count from data_table'
BEGIN
  SELECT SUM(value), COUNT(*)
  INTO sum_result, count_result
  FROM data_table
  WHERE value > input_value;
END;

Errors

Returns error if:

• Procedure name already exists
• Invalid parameter types
• Body parsing fails