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Cloning a table in MySQL

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MySQL
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General table Cookbook
schedule Jul 1, 2022
Last updated
local_offer MySQL
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tocTable of Contents
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We can clone the structure of an existing table to a new table in MySQL using the general syntax:

CREATE TABLE new_table LIKE original_table;
WARNING

Foreign key definitions, DATA DIRECTORY, INDEX DIRECTORY table options are not copied.

In order to populate the new_table with all the data from the original_table we can use the below:

INSERT INTO new_table SELECT * FROM original_table;

If we want to populate only certain records from the original_table in new_table:

INSERT INTO new_table SELECT * FROM original_table WHERE conditon;

Example

To copy the original table students:

student_id

fname

lname

day_enrolled

age

username

1

Sky

Towner

2015-12-03

17

stowner1

2

Ben

Davis

2016-04-20

19

bdavis2

3

Travis

Apple

2018-08-14

18

tapple3

4

Arthur

David

2016-04-01

16

adavid4

5

Benjamin

Town

2014-01-01

17

btown5

The above sample table can be created using the code here.

To create a clone of the original table students and call it students_copy:

CREATE TABLE students_copy LIKE students;
Query OK, 0 rows affected (0.02 sec)

To insert all records from students into students_copy:

INSERT INTO students_copy SELECT * FROM students;
Query OK, 5 rows affected (0.00 sec)
Records: 5 Duplicates: 0 Warnings: 0

Now the students_copy table has the same data as the original students table:

SELECT * FROM students_copy;
+------------+----------+--------+--------------+------+----------+
| student_id | fname | lname | day_enrolled | age | username |
+------------+----------+--------+--------------+------+----------+
| 1 | Sky | Towner | 2015-12-03 | 17 | stowner1 |
| 2 | Ben | Davis | 2016-04-20 | 19 | bdavis2 |
| 3 | Travis | Apple | 2018-08-14 | 18 | tapple3 |
| 4 | Arthur | David | 2016-04-01 | 16 | adavid4 |
| 5 | Benjamin | Town | 2014-01-01 | 17 | btown5 |
+------------+----------+--------+--------------+------+----------+
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Published by Arthur Yanagisawa
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