MySQL - SQL_BIG_SELECTS

Question

Hey, I\'ve been investigating SQL_BIG_SELECTS, but the MySQL documentation so far has been pretty unhelpful. I\'m looking for some insight as to preventing errors like the o

Answer 1

I had more than 2000k records in db, and my query was big-select with exhaustive comparison for duplication removal and updation of certain field...I was told the same by mysql (current version on answer date), and I ended up using index on 2 fields involved in where clause...this should help others too...steps which worked for me were:

1. Set Index on field
2. ANALYZE TABLE
3. run the query

HTH