mysql select into新表
时间: 2023-08-25 19:10:31 浏览: 55
你可以使用SELECT INTO语句将查询的结果插入到一个新表中。以下是一个示例:
```
CREATE TABLE new_table AS
SELECT column1, column2, ...
FROM old_table
WHERE condition;
```
在上面的示例中,你需要将`new_table`替换为你想要创建的新表的名称,`old_table`替换为你想要从中选择数据的现有表的名称。`column1, column2, ...`是你要选择的列的名称,你可以根据需要添加或删除列。`WHERE condition`是一个可选项,用于指定筛选条件。
请确保在执行SELECT INTO语句之前,你已经创建了新表,并且新表的结构与选择的列的类型和顺序匹配。
相关问题
mysql insert into select 创建表
mysql insert into select 创建表是一种创建表的方式,它的基本语法如下:
```
CREATE TABLE new_table_name
SELECT column1, column2,...
FROM existing_table_name
WHERE ....;
```
这个语法中,我们使用CREATE TABLE来创建一个新的表,然后使用SELECT语句从一个现有的表中选择列,并将结果插入到新表中。新表名和现有表名可以不同。
举个例子,假设我们有一个名为"students"的表,其中包含id、name和age三列,我们想要创建一个新表"new_students",并从"students"表中选择id和name列,可以使用以下语句:
```
CREATE TABLE new_students
SELECT id, name
FROM students;
```
这样就可以将"students"表中的id和name列复制到新表"new_students"中。
mysql select into
MySQL SELECT INTO is used to create a new table and populate it with data from an existing table. The syntax for SELECT INTO is:
SELECT column1, column2, ...
INTO new_table_name
FROM existing_table_name
WHERE condition;
The new_table_name is the name of the new table that will be created, and existing_table_name is the name of the table that contains the data to be copied. The WHERE clause is optional and can be used to specify a condition that the data must meet to be included in the new table.
Example:
Let's say we have a table named "employees" with columns "id", "name", "age", and "salary". We want to create a new table named "young_employees" that contains only employees under the age of 30.
The SQL statement would be:
SELECT id, name, age, salary
INTO young_employees
FROM employees
WHERE age < 30;
This will create a new table named "young_employees" and populate it with data from the "employees" table where the age is less than 30. The new table will have the same columns as the original table.