insert into select
时间: 2023-04-29 18:04:55 浏览: 48
"insert into select" 是 SQL 语句中的一种用法。它允许在执行插入操作时,从另一个表中选择数据并插入到当前表中。语法格式如下:
```
INSERT INTO <table_name>
SELECT <columns>
FROM <source_table>
WHERE <condition>
```
其中,"table_name" 是要插入数据的表名,"columns" 是要插入的字段名,"source_table" 是源表名,"condition" 是筛选数据的条件。
相关问题
INSERT INTO select
INSERT INTO SELECT是一种SQL语句,用于将一个表中的数据插入到另一个表中。它的语法如下:
```
INSERT INTO table_name1 (column1, column2, ...)
SELECT column1, column2, ...
FROM table_name2
WHERE condition;
```
其中,table_name1是目标表,table_name2是源表。column1, column2等是目标表和源表中要插入的列名。condition是可选的,用于筛选源表中的数据。
INSERT INTO SELECT语句的工作原理是,它首先从源表中选择满足条件的数据行,然后将这些数据行插入到目标表中的指定列中。
Insert into select
"Insert into select" is a SQL statement used to insert data from one table to another.
The syntax for this statement is:
```
INSERT INTO table_name_1 (column1, column2, column3, ...)
SELECT column1, column2, column3, ...
FROM table_name_2
WHERE condition;
```
This statement selects data from `table_name_2` based on the `WHERE` condition (if specified) and inserts it into `table_name_1`. The columns in both tables should match in number and data type.