MySQL将行复制并粘贴到同一表的末尾

Question

I have a mysql table called users that has a unique id column plus loads of other columns, too many to list.

Is it possible to duplicate a specific row data using id and add it to the end of the table with a new ID without having to list each column name?

Answer 1

Assuming the id column is auto-incremented, you can do what you want by listing the columns as:

insert into t(. . .)  -- all but id
    select . . .   -- all but id
    from t
    where id = @id;

You can get the columns to list using information_schema :

select group_concat(column_name)
from information_schema.columns
where table_schema = @schema and table_name = @name and
      column_name <> 'id';

You can copy and paste the columns into the above query. Or, you could even put the values in a variable, construct the SQL statement, and use prepare .