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EnOne
PostPosted: Thu Oct 06, 2005 6:53 am    Post subject: Padding a field Reply with quote

Centurion

Joined: 09 Oct 2002
Posts: 100
Location: Kansas City
One of the common things I am working on it Justifying and Padding within eSQL. There are a few ways to do this there are four examples below. For the example I'm using right justify left pad with zeros.


<InputNumber>123456</InputNumber>
A.
Code:
DECLARE InputNumber CHAR;
SET InputNumber = CAST(InputBody.XML.InputNumber AS CHAR);
WHILE LENGTH(InputNumber) < 10 DO
    SET InputNumber = '0' || InputNumber;
END WHILE;

B.
Code:
DECLARE InputNumber CHAR;
SET InputNumber = SUBSTRING('0000000000' FROM 1 FOR (10-LENGTH(InputNumber))) || CAST(InputBody.InputNumber AS CHAR);

C.
Code:
DECLARE InputInteger INT;
DECLARE InputNumber CHAR;
SET InputInteger = 10000000000 + InputBody.InputNumber;
SET InputNumber = SUBSTRING(CAST(InputInteger AS CHAR) FROM 2 FOR 10);

D.
Code:
SET InputNumber = RIGHT('0000000000' || CAST(InputBody.InputNumber AS CHAR),10)


Does anyone know a best practice for which way is faster/more reliable or is there another way.
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Empeterson
PostPosted: Thu Oct 06, 2005 6:58 am    Post subject: Reply with quote

Centurion

Joined: 14 Apr 2003
Posts: 125
Location: Foxboro, MA
There is an OVERLAY function which which can accomplish this. Refer to the esql manual for exact syntax.
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EnOne
PostPosted: Thu Oct 06, 2005 7:34 am    Post subject: Reply with quote

Centurion

Joined: 09 Oct 2002
Posts: 100
Location: Kansas City
E.
Code:
DECLARE InputLength INT;
DECLARE InputNumber CHAR;
SET InputLength = LENGTH(InputRoot.InputNumber);
SET InputNumber = OVERLAY('0000000000'  PLACING InputRoot.InputNumber FROM (10-InputLength) FOR InputLength);
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Empeterson
PostPosted: Thu Oct 06, 2005 8:52 am    Post subject: Reply with quote

Centurion

Joined: 14 Apr 2003
Posts: 125
Location: Foxboro, MA
What are you doing with InputNumber? Is that going to be mapped to a field that is defined in a message set?
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EnOne
PostPosted: Thu Oct 06, 2005 9:24 am    Post subject: Reply with quote

Centurion

Joined: 09 Oct 2002
Posts: 100
Location: Kansas City
They are receiving the number from me in XML format. The Input is either MRM or XML.

<Parent>
<OutputNumber>0000123456</OutputNumber>
</Parent>
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