Oracle中带条件插入数据的使用方法示例详解

INSERT INTO table_name (column1, column2, column3, ...)
WHEN condition
   THEN VALUES (value1, value2, value3, ...);

INSERT INTO employees (employee_id, first_name, last_name)
WHEN EXISTS (SELECT 1 FROM employees WHERE employee_id = 100)
   THEN VALUES (100, 'John', 'Doe');

INSERT INTO Customers
VALUES(10006,
       'Pep E. LaPew',
       '100 Main Street',
       'Los Angeles',
       'CA',
       '90046',
       'USA',
       NULL,
       NULL);

INSERT INTO customers(cust_id,
                      cust_name,
                      cust_address,
                      cust_city,
                      cust_state,
                      cust_zip,
                      cust_country
)
VALUES(10006,
       'Pep E. LaPew',
       '100 Main Street',
       'Los Angeles',
       'CA',
       '90046',
       'USA'
);

--这种语法为一种错误示范，但是在其他的DBMS中是可以使用的
insert into table_name(colum1, colun2)
values(1,2),(3,4);
--正确用法：
1、采用union all拼接查询方式：
insert into CB_PRACTICE(id_, type_,remark)
select 5,'物理','浮力' from dual
union all select 6,'物理','阻力' from dual;
2、采用insert all的方式：
INSERT ALL
INTO CB_PRACTICE(id_, type_,remark) VALUES (7,'语文','唐诗')
INTO CB_PRACTICE(id_, type_,remark) VALUES (8,'语文','宋词')
SELECT * FROM DUAL;

INSERT INTO customers(cust_id,
                      cust_contact,
                      cust_email,
                      cust_name,
                      cust_address,
                      cust_city,
                      cust_state,
                      cust_zip,
                      cust_country)
SELECT cust_id,
       cust_contact,
       cust_email,
       cust_name,
       cust_address,
       cust_city,
       cust_state,
       cust_zip,
       cust_country
FROM custnew;