题目:
sql语句随手就来
update salary set sex = if(sex='m','f','m')
然后,给大家看一个很烧脑的answer
update salary set sex = char(ascii('m') + ascii('f') - ascii(sex));
题目:
sql语句随手就来
update salary set sex = if(sex='m','f','m')
然后,给大家看一个很烧脑的answer
update salary set sex = char(ascii('m') + ascii('f') - ascii(sex));