Hy,
A customer has a DB, that I backed up. I dropped the schema into my PC, and restored that DB. I saw that some rows, added into my PC, made verifies, copied that rows into another tables, backed up that tables, changed the table name into the sql and restored into the customer DB.
Now, performing a select into my PC, it needs about a seconds, into my customer'd PC, it needs over than 50 seconds.
The select is a single table select, with conditions about two columns that are the first two columns into a index that is not the primary one. The Set Explain shows this index as the possible_key to perform the select.
How do I restore an adequate performance?
A customer has a DB, that I backed up. I dropped the schema into my PC, and restored that DB. I saw that some rows, added into my PC, made verifies, copied that rows into another tables, backed up that tables, changed the table name into the sql and restored into the customer DB.
Now, performing a select into my PC, it needs about a seconds, into my customer'd PC, it needs over than 50 seconds.
The select is a single table select, with conditions about two columns that are the first two columns into a index that is not the primary one. The Set Explain shows this index as the possible_key to perform the select.
How do I restore an adequate performance?