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What is the concept of CTAS (CREATE TABLE AS SELECTED) in MySQL?

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2023-09-09 19:41:141131browse

MySQL中CTAS(CREATE TABLE AS SELECTED)的概念是什么?

CTAS, the "Create Table AS Select" script is used to create a table from an existing table. It copies the table structure as well as the data in the existing table. Consider the following example where we have created a table named EMP_BACKUP from an existing table named "Employee" structure and data in the Employee" table to create a table named "EMP_BACKUP".

mysql> Select * from Employee;

+------+--------+
| Id   | Name   |
+------+--------+
| 100  | Ram    |
| 200  | Gaurav |
| 300  | Mohan  |
+------+--------+

3 rows in set (0.00 sec)

We can observe that it copies all the data and structure of the "Employee" table.

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