1There are two tables in mysql
Create table cmt(a int, b int);
insert into cmt values(1,1),(2,2),(3,3)
Create table cmt1(a int, c int);
insert into cmt1 values(1,1),(2,2),(3,3)
2 Migrate from online to online
3 Goto step3, choose the two tables. and change target table of cmt to cmt1. Then click other space.
The target column of b will be empty.
If the reason is the columns of cmt and cmt1 are different, I change target column of b to c, after migration, it will create table like as follows:
"CREATE TABLE "cmt1"(
Please consider the requirement of it.