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How do we use a Parameter more than once in a dynamic SQL with one Argument
  1. How-to
  2.  Embedded SQL
  3.  PowerBuilder (Appeon)
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  1. Glenn Barber
  2. PowerBuilder
  3. Tuesday, 23 July 2024 12:20 AM UTC

We are using PB17 and SQLAnywhere 17

We have a generalized routine whereby we can pass a SQL query which takes one argument.

The problem is that some queries need to reference the same argument more than once.

As we understand it - if you use the ? argument placeholder more than once - the system assumes as separate argument associated with each occurrance of the argument - hence the follwing fails

SELECT metadatavalue from propmetadata where metadatatypecd = 'SHORTSYNOPSIS' AND propassetid in (SELECT propassetid from propasset where propno = (left(?, 8) + 'S00') AND langcd = SUBSTRING(?, 16, 3) AND langusecd = SUBSTRING(?, 20, 3))

where the following single parameter reference works

SELECT metadatavalue from propmetadata where metadatatypecd = 'SHORTSYNOPSIS' AND propassetid in (SELECT propassetid from propasset where propno = (left(?, 8) + 'S00')  

We tried the following (noted as working in other database implementations) - which also doesnt work.

SELECT metadatavalue from propmetadata where metadatatypecd = 'SHORTSYNOPSIS' AND propassetid in (SELECT propassetid from propasset where propno = (left(?1, 8) + 'S00') AND langcd = SUBSTRING(?1, 16, 3) AND langusecd = SUBSTRING(?1, 20, 3))

Is there any way to do this in a straightforward manner??

Thanks

Glenn Barber

 

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