Question

Please help with following if statement in MySQL 5.5. I am trying to compare column values to see if they are all equal or different.

SELECT IF(Column1 = Column2 = Column3 = Column4 = Column5, 'SAME', 'Different') 
AS ValueStatus 
FROM dbs.tabletest
GROUP BY Id

I have also tried the following, however, it only brings one type result as “Different” even when all columns have the same values.

  SELECT *,CASE 
  WHEN Column1 = Column2 = Column3 = Column4 = Column5 
    Then 'Same'
  ELSE 'Different' 
 END
  AS ValueStatus 
  FROM dbs.tabletest
  GROUP BY Id;

Answer 1

Should be column1 = column2 and column1 = column3 and column1 = column4 and column1 = column5 instead.

What happened to you is probably you compared column1 to column2, which returned true, then you compared true to column3, which yields false, compare false to column4, which also evaluates to false, etc.