摘要： # Write your MySQL query statement belowSELECT *,(IF(x+y>z AND x+z>y AND y+z>x AND ABS(x-y)<z AND ABS(x-z)<y AND ABS(y-z)<x,'Yes','No')) AS triangleFR 阅读全文

摘要： select FirstName, LastName,City, State from Personleft join Address on Person.PersonId = Address.PersonId; 阅读全文