Concatenation Logic

• hemanth T

  SSC Eights!

  Points: 807

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  January 12, 2012 at 5:59 am

  #143088

  Hi All,

  I need to concatenate some code.For example--

  given input :123

  output: reg0000123.

  if input :21

  output :reg0000021

  repalcing 21 to last 2 zeros in string'regooooooo'.

  Can anyone tell me how to make the psuedo logic to achieve results in above format.Can we use LEN or STUFF functions.

  Thanks,

  Hemanth.

• DNA_DBA

  SSCrazy Eights

  Points: 9116

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  January 12, 2012 at 6:43 am

  #1432445

  There are a number of ways of doing this sort of thing. An example is below

  [font="Courier New"]

  declare @string varchar(11)

  set @string='reg0000000'

  declare @input varchar(7)

  set @input='123'

  declare @output varchar(11)

  set @output=left(@string,len(@string)-len(@input))+@input

  print @output

  [/font]

  This performs string manipulation by finding the length of the @input string and using that to get the first characters in @string (by subtracting the length of @input from the length of @string).

  It then adds @input onto it to build a new string @output.

  Other ways of doing it might be to build up the output string from scratch by using replicate or using stuff:

  STUFF (@string, len(@string)-len(@input)+1 , len(@input) , @input )