Using the answer from this question: http://stackoverflow.com/questions/662877/need-mysql-insert-select-query-for-tables-with-millions-of-records
new_table
* date
* record_id (pk)
* data_field
INSERT INTO new_table (date,record_id,data_field)
SELECT date, record_id, data_field FROM old_table
ON DUPLICATE KEY UPDATE date=old_table.data, data_field=old_table.data_field;
I need this to work with a group by and join.. so to edit:
INSERT INTO new_table (date,record_id,data_field,value)
SELECT date, record_id, data_field, SUM(other_table.value) as value FROM old_table JOIN other_table USING(record_id)
ON DUPLICATE KEY UPDATE date=old_table.data, data_field=old_table.data_field, value = value;
I can't seem to get the value updated. If I specify old_table.value I get a not defined in field list error.
