I have table in mysql, it's sutructure:
ID| text| content
1 | bla| sadas|
2 | bla| sadas|
3 | bla| sadas|
4 | bla| sadas|
I want to add new column "UID" with "alter table" and set ID's value to UID.
I added a new column but I dont know how I can set ID's value to UID with alter.
UID| ID| text| content
1 | 1 | bla| sadas|
2 | 2 | bla| sadas|
3 | 3 | bla| sadas|
4 | 4 | bla| sadas|
Sorry, if I have written something wrong in the question, my english not good.
Thanks.
update your_table
set uid = id
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