UpCase and DownCase String Function : DataStage Transformation

Downcase(column):
                  This function converts all the input character to LOWER case where input can be in any case.

input = 'This is me'
input1 = 'this is me'
input2 = 'THIS IS ME'

DownCase(input)    =  'this is me'
DownCase(input1)   =  'this is me'
DownCase(input2)   =  'this is me'

Upcase(column): 
                  This function converts all the input character to UPPER case where input can be in any case.

input = 'This is upper case function'
input1 = 'this is me'
input2 = 'THIS IS ME'

UpCase(input)    =  'THIS IS UPPER CASE FUNCTION'
UpCase(input1)   =  'THIS IS ME'
UpCase(input2)   =  'THIS IS ME'

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