[MySQL] Multiple indexes on the same column of a table error out on import

[shubham-yb]

Jira Link: DB-13437
Voyager renames the indexes with a set pattern
table_name_column_name during export, thus having multiple indexes on the same column of a table will have the same name and will error out during import.

Example:

Sample schema on the source:

create table test(id int, k int);
create index index1 on test(k);
create index index2 on test(k);

Exported Indexes:

CREATE INDEX test_k ON test (k);
CREATE INDEX test_k ON test (k);

Suggested Changes:

1. Rename one of the indexes to some other name. (ex: test_k2)
2. Drop index1 or index2 on the source before exporting.