oracle insert process
In Oracle, the INSERT statement can be used to insert new data rows into the table. Usually, we use INSERT statement to write data to the database. However, in Oracle, if you need to perform complex insert operations, you can use stored procedures to implement the insert.
A stored procedure is a predefined database object that can store a set of SQL statements and execute the SQL statements in it by calling the procedure when needed. In Oracle, stored procedures are usually used to process data in batches, maintain database objects, perform complex algorithms, etc.
Before using a stored procedure to perform an INSERT operation, we need to define the stored procedure first. We can use the following sample code to create a simple insert stored procedure:
CREATE OR REPLACE PROCEDURE INSERT_PROCEDURE (p_id NUMBER, p_name VARCHAR2)
IS
BEGIN
INSERT INTO employees(id , name) VALUES (p_id, p_name);
COMMIT;
END;
In the above code, we created a stored procedure named INSERT_PROCEDURE. This stored procedure needs to accept two parameters: p_id (NUMBER type) and p_name (VARCHAR2 type). The main function of this process is to insert the incoming parameters into the employees table.
In the body of the stored procedure, we use the INSERT statement to insert the incoming value into the database. After the insertion is completed, we use the COMMIT statement to commit the transaction.
Using stored procedures for INSERT operations can bring the following advantages:
- Improve performance: Using stored procedures can greatly reduce the number of database connections, thereby reducing the execution of SQL statements time. In addition, stored procedures can also cache query results, reducing the I/O load on the system.
- Improve security: Stored procedures can authenticate and authorize users, and audit database access behaviors. By limiting the scope of user operations, the risk of malicious operations can be reduced.
- Improve manageability: Using stored procedures can centralize code in the database, thereby reducing code maintenance costs. In addition, it can also help us with code reuse, thereby improving code reusability.
In summary, in Oracle, using stored procedures for INSERT operations can improve the performance, security and manageability of the system. Although it requires some additional development work, it can bring many long-term benefits to our system.
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