Function to find string

[kab123]

Hi,

What function can I use to find a string in a field..The specific string may be anywhere in the whole field.. I am trying to find the string..If it is found, I have to do something If not something else.

Thanks

[ds_developer]

You could use the INDEX function.
John

[Sunshine2323]

You can also try the COMPARE function

[kab123]

Can we use Index function even If we dont know where exactly the string in the field is ..?

ex: I am looking for a string 'CARE' in "THE HEART CARE CENTER INC"

Thanks

[kduke]

index() will tell you where in the string it exists.

[ray.wurlod]

INDEX(string, search_string, occurrence)

• INDEX("I had to edit it", "it", 1) finds the first occurrence of "it" in the original string (at character position 12) and returns 12.
  
  INDEX("I had to edit it", "it", 2) finds the second occurrence of "it" in the original string (at character position 15) and returns 15.
  
  INDEX("I had to edit it", "it", 3) searches for the third occurrence of "it" in the original string, fails to find it, and returns 0.

Because DataStage BASIC has the rule 0 is "false" and another value is "true", the result of INDEX can be used in a Boolean context.

Code: Select all

If Index("ABC", A, 2) Then "at least two A characters" Else "less than two A characters"

[kab123]

Thanks Kim and Ray...
I was littlebit curious, if a specific function exists that can find a substring anywhere in the whole field and if found, I need to concatenate 4 other fields...
but I can use Index() in a stage variable and work it out..

Thanks again...

[Sainath.Srinivasan]

Can you elaborate on your requirement. I believe that others have answered your question as per the information provided by you.

[kab123]

Sai,

I have to look for some set (around 40) of words/strings like "REHAB" and so on in a field of 50 bytes.. If I find these strings "REHAB" some where in the field, Then I have to map some thing in field1, field2, filed3, field4..If I dont find any of those set of words, i need to map some other thing in field1, field2, filed3, field4..

i am thinking to use the Index function in Stage Var and map accordingly..anymore suggestions..welcome !! :)

Thanks

[leomauer]

There is also Count function:
Count (string, substring)
Returns count or null

[ray.wurlod]

Nope. Count() function returns actual count (of occurrences of substring in main string, without overlap), whether zero or larger.