Not CASE or DECODE

Question

I have a table with say a column named “COLOR” with 500 different values - lets say 3 of the values are red white and blue. There are 497 others
I want insert from table with the color column into another table named "OTHER"
But everytime I hit a blue, I want to insert red instead. All the other values stay the same as they are.
I've tried CASE and DECODE but it leaves me with nulls for the other 497 values. Is there a way to do this by saying only when I hit the blue, I want it to be red, without hardcoding all the other values? For example:
Insert into OTHER table
Select
COLUMN1,
COLUMN2,
COLUMN3,
COLOR (If color is blue, insert red – then let all other colors be what they are)
COLUMN5

Answer 1

Hi,
Sure, use an ELSE clause:
CASE
     WHEN  color = 'blue'  THEN  'red'
                                 ELSE  color
ENDor, if you prefer DECODE, pass an even number of arguments:
DECODE ( color
       , 'blue'     , 'red'
                  , color
       )Either way, the expression returns 'red' when color is 'blue', and returns color itself in all other cases.