निम्नलिखित में से कौन सा SQL कमांड तालिका (table) की संरचनात्मक परिभाषा को सुरक्षित रखते हुए उसके भीतर से सभी पंक्तियों (rows) को तुरंत हटा सकता है?

The 'Drain of Wealth' theory was propounded by which Indian nationalist leader?

Which event is considered the turning point in Mahatma Gandhi's leadership in the Indian independence movement?

Which African leader is known for his non-violent opposition to colonial rule?