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SQL INSERT INTO 语句


SQL INSERT INTO 语句

The INSERT INTO statement is used to insert new records in a table.

INSERT INTO 语法

It is possible to write the INSERT INTO statement in two ways

1. 指定要插入的列名和值

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

2. 如果您为表中的所有列添加值,则无需在 SQL 查询中指定列名。但是,请确保值的顺序与表中的列顺序相同。在此, INSERT INTO 语法如下

INSERT INTO table_name
VALUES (value1, value2, value3, ...);


演示数据库

以下是示例中使用的 Customers 表的选择

CustomerID CustomerName ContactName Address City PostalCode Country
89 White Clover Markets Karl Jablonski 305 - 14th Ave. S. Suite 3B Seattle 98128 USA
90

Wilman Kala Matti Karttunen Keskuskatu 45 Helsinki 21240 Finland
91

Wolski Zbyszek ul. Filtrowa 68 Walla 01-012 Poland


INSERT INTO 示例

The following SQL statement inserts a new record in the "Customers" table

示例

INSERT INTO Customers (CustomerName, ContactName, Address, City, PostalCode, Country)
VALUES ('Cardinal', 'Tom B. Erichsen', 'Skagen 21', 'Stavanger', '4006', 'Norway');

The selection from the "Customers" table will now look like this

CustomerID CustomerName ContactName Address City PostalCode Country
89 White Clover Markets Karl Jablonski 305 - 14th Ave. S. Suite 3B Seattle 98128 USA
90

Wilman Kala Matti Karttunen Keskuskatu 45 Helsinki 21240 Finland
91

Wolski Zbyszek ul. Filtrowa 68 Walla 01-012 Poland
92 Cardinal Tom B. Erichsen Skagen 21 Stavanger 4006 Norway

Did you notice that we did not insert any number into the CustomerID field?
The CustomerID column is an auto-increment field and will be generated automatically when a new record is inserted into the table.


仅插入指定列的数据

It is also possible to insert data in specific columns.

The following SQL statement will insert a new record, but only insert data in the "CustomerName", "City", and "Country" columns (CustomerID will be updated automatically)

示例

INSERT INTO Customers (CustomerName, City, Country)
VALUES ('Cardinal', 'Stavanger', 'Norway');

The selection from the "Customers" table will now look like this

CustomerID CustomerName ContactName Address City PostalCode Country
89 White Clover Markets Karl Jablonski 305 - 14th Ave. S. Suite 3B Seattle 98128 USA
90

Wilman Kala Matti Karttunen Keskuskatu 45 Helsinki 21240 Finland
91

Wolski Zbyszek ul. Filtrowa 68 Walla 01-012 Poland
92 Cardinal null null  Stavanger null Norway

插入多行

It is also possible to insert multiple rows in one statement.

To insert multiple rows of data, we use the same INSERT INTO statement, but with multiple values

示例

INSERT INTO Customers (CustomerName, ContactName, Address, City, PostalCode, Country)
VALUES
('Cardinal', 'Tom B. Erichsen', 'Skagen 21', 'Stavanger', '4006', 'Norway'),
('Greasy Burger', 'Per Olsen', 'Gateveien 15', 'Sandnes', '4306', 'Norway'),
('Tasty Tee', 'Finn Egan', 'Streetroad 19B', 'Liverpool', 'L1 0AA', 'UK');

Make sure you separate each set of values with a comma ,.

The selection from the "Customers" table will now look like this

CustomerID CustomerName ContactName Address City PostalCode Country
89 White Clover Markets Karl Jablonski 305 - 14th Ave. S. Suite 3B Seattle 98128 USA
90

Wilman Kala Matti Karttunen Keskuskatu 45 Helsinki 21240 Finland
91

Wolski Zbyszek ul. Filtrowa 68 Walla 01-012 Poland
92 Cardinal Tom B. Erichsen Skagen 21 Stavanger 4006 Norway
93 Greasy Burger Per Olsen Gateveien 15 Sandnes 4306 Norway
94 Tasty Tee Finn Egan Streetroad 19B Liverpool L1 0AA UK

通过练习来测试自己

练习

Insert a new record in the Customers table.

 Customers 
CustomerName, 
Address, 
City, 
PostalCode,
Country
 
'Hekkan Burger',
'Gateveien 15',
'Sandnes',
'4306',
'Norway';

开始练习


Video: SQL NOT Operator

SQL Tutorial on YouTube
SQL Tutorial on YouTube



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