題目:
sql語句隨手就來
update salary set sex = if(sex='m','f','m')
然後,給大家看一個很燒腦的answer
update salary set sex = char(ascii('m') + ascii('f') - ascii(sex));
題目:
sql語句隨手就來
update salary set sex = if(sex='m','f','m')
然後,給大家看一個很燒腦的answer
update salary set sex = char(ascii('m') + ascii('f') - ascii(sex));