MySQL将大容量数据从一个表插入另一个表

Question

nsert Bulk data from one to another table ,

master table

column1,col2,col3,col migrated
123      1    1     o
234      2   2       0

child table

col1,col2
123   1
234   2

if i get successful insert data from master table to child table ,i want to update master table migrated column to 1 or other wise i rollback my data from my child table using stored procedure with cursors.

Answer 1

I don't know about the need for stored procedures and such. You can simply update across a join.

UPDATE master AS m
LEFT JOIN child AS c
  ON m.column1 = c.col1 AND
  m.col2 = c.col2
SET
  m.migrated = 1,
  c.col1 = m.column1,
  c.col2 = m.col2