Question

i have a table with some duplicate values and i want to remove them:

table1:

id   |   access       |   num
12       1144712030       101
13       1144712030       101
14       1154512035       102
15       1154512035       102

i would like to remove the duplicates so i will have left:

id   |   access       |   num
12       1144712030       101
14       1154512035       102

any idea how to do this in a mysql command?

thanks

Answer 1

The simpler solution i think would be:

CREATE TABLE new_table as SELECT id,DISTINCT access,num FROM original_table
TRUNCATE TABLE original_table
INSERT INTO original_table SELECT * FROM new_table
DROP TABLE new_table;

Note:

I think some kind of cursor could be used, and maybe a temporary table. But you should be really careful.