In MySQL, can I copy one row to insert into the same table?

Question

insert into table select * from table where primarykey=1

I just want to copy one row to insert into the same table (i.e., I want to duplicate an ex

Answer 1

Here's an answer I found online at this site Describes how to do the above1 You can find the answer at the bottom of the page. Basically, what you do is copy the row to be copied to a temporary table held in memory. You then change the Primary Key number using update. You then re-insert it into the target table. You then drop the table.

This is the code for it:

CREATE TEMPORARY TABLE rescueteam ENGINE=MEMORY SELECT * FROMfitnessreport4 WHERE rID=1;# 1 row affected. UPDATE rescueteam SET rID=Null WHERE rID=1;# 1 row affected.INSERT INTO fitnessreport4 SELECT * FROM rescueteam;# 1 row affected. DROP TABLE rescueteam# MySQL returned an empty result set (i.e. zero
rows).

I created the temporary table rescueteam. I copied the row from my original table fitnessreport4. I then set the primary key for the row in the temporary table to null so that I can copy it back to the original table without getting a Duplicate Key error. I tried this code yesterday evening and it worked.