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- drh78568 2017-06-20 06:55关注
Check error log of your webserver, you can find there error description.
I think you have reached max_execution_time limit of php. Check that key in php.ini. You can disable that limit with setting
max_execution_time = 0
But you must understand, that fetching so many rows in one query will use a huge amount of RAM, and it's second limitation that you may reached. In such situation you can split data to chunks using multiple queries with LIMIT,OFFSET set and process that chunks one by one, having fetched at once 100000 rows for example.
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