FMDB刪除前50條數據的寫法

刪除前50條數據web delete from tab where (select count(Id) from tab)> 50 and Id in (select Id from tab order by Id ASC limit 50); 換成相應的數量便可，若想刪除50條以後的數據，用這個：sql delete from tab where (select count(Id) from t

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