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我在Oracle數據庫中有一列，其中存儲了連接的值。例如，從列值中刪除額外空間
/uk/letters/default?/uk/letters/funny_letters?
/uk/letters/letters?/library/conditionalstyle?o=3&f=11/uk/letters/funny_letters?
/uk/workinglife/viewarticle_93?/library/conditionalstyle?/uk/financialcentre/car_tax_calculator?
/uk/job-hunting/default?/partners/msn/i-resignfinctr?/uk/letters/letters?/
在這兩個網址之間，有一些間隔。我怎樣才能刪除它們？