如何在 Oracle PL/SQL 存储过程中使用插入查询插入多个项目？

Question

我创建了一个存储过程，它有两个插入查询，一个将数据插入到订单表中，另一个将数据插入到 order_item 表中。我希望 order_item 插入查询插入多个项目，我设法让它插入一个项目，但不确定如何将多个项目插入 order_item 表以及如何执行该过程。

CREATE OR REPLACE PROCEDURE new_order
-- define the variables for orders and order_item tables
(
    -- variables for the orders table
    p_order_id IN INT, 
    p_order_num IN CHAR,
    p_name IN CHAR, 
    p_email IN CHAR,
    p_address IN VARCHAR2,
    p_city IN VARCHAR2,
    p_province IN VARCHAR2,
    p_postcode IN VARCHAR2,
    p_telephone IN NUMBER,
    p_total IN NUMBER,
    p_order_date IN DATE,
    -- variables for the order_item table
    p_order_item_id IN INT,
    p_product_id IN INT,
    p_seller_id IN INT,
    p_sub_order_number IN CHAR,
    p_quantity IN INT,
    p_condition IN CHAR,
    p_unit_price IN NUMBER, 
    p_cost_charge IN NUMBER
)
AS
BEGIN
    DBMS_OUTPUT.PUT_LINE ('Insert attempted');

    -- Insert data into the order table
    INSERT INTO orders(
        order_id, 
        order_number, 
        billing_name, 
        billing_email, 
        billing_address, 
        billing_city, 
        billing_province, 
        billing_postcode, 
        billing_telephone,
        billing_total,
        order_date)
    values(
        p_order_id, 
        p_order_num,
        p_name,
        p_email,
        p_address,
        p_city,
        p_province,
        p_postcode,
        p_telephone,
        p_total,
        p_order_date
        );

    -- Insert data into the order_item table
    -- Loop through the order items based on the order_id
    INSERT INTO order_item(
        order_item_id,
        order_id,
        product_id,
        seller_id,
        sub_order_number,
        quantity,
        condition,
        unit_price,
        cost_charge
        )
    values(
        p_order_item_id,
        p_order_id,
        p_product_id,
        p_seller_id,
        p_sub_order_number,
        p_quantity,
        p_condition,
        p_unit_price,
        p_cost_charge
        );

    COMMIT;

    DBMS_OUTPUT.PUT_LINE ('Insert succeeded');

    EXCEPTION
     WHEN others THEN   
        DBMS_OUTPUT.PUT_LINE ('Insert rejected');
        DBMS_OUTPUT.PUT_LINE ('SQL Error Code:  ' || SQLCODE);
        DBMS_OUTPUT.PUT_LINE ('SQL Error Message:  ' || SQLERRM); 
        ROLLBACK;
END;
/

Answer 1

您可以使用函数添加订单详细信息，该函数在成功插入后返回 order_id。 然后使用该订单 ID 使用过程插入到 order_items 表中。

CREATE OR REPLACE FUNCTION INSERT_ORDER RETURN VARCHAR2 IS
    --order specific attributes
    
    BEGIN
    
    --insert into order
    --RETURN order_id;
    
 END INSERT_ORDER;


 CREATE OR REPLACE PROCEDURE INSERT_ORDER_ITEMS(
    --order items specific attributes
    
 BEGIN
    
    --insert into order items
    --COMMIT;
    
 END INSERT_ORDER_ITEMS;
    
 --You can call this within single method/procedure as:
    
 DECLARE
    
 order_id_ NUMBER;
    
 BEGIN
    
    order_id_ := INSERT_ORDER(--attrbiutes);
    FOR i IN i..order_items_list
    LOOP
      INSERT_ORDER_ITEMS(order_id_, --rest of order details);
      COMMIT;
    END LOOP;
 END;