Php operation large data volume summary operation too long webpage failure urgent

Source: Internet
Author: User
Php is running a large data volume summary operation for a long time. webpage failure is urgent! The running time is about 2 hours, and the page becomes invalid. Thank you for your help. PHP php running large data volume summary operation time is too long webpage failure is urgent!
The running time is about 2 hours, and the page becomes invalid. Thank you for your help. Share with PHP:
------ Solution --------------------
Paste the final generated SQL statement. Clearly describe the table structure and indexes.
------ Solution --------------------
Use the EXPLAIN command to check your SQL command and see what advice mysql will give you.

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