Is it possible to copy data from column A to column B for all records in a table in SQL?
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sql
How about this
UPDATE table SET columnB = columnA;
This will update every row.
This will update all the rows in that columns if safe mode is not enabled.
UPDATE table SET columnB = columnA;
If safe mode is enabled then you will need to use a where clause. I use primary key as greater than 0 basically all will be updated
UPDATE table SET columnB = columnA where table.column>0;
UPDATE table_name SET
destination_column_name=orig_column_name
WHERE condition_if_necessary
Source: Stackoverflow.com