The SQL UPDATE statement for the SET condition type is written as follows:

UPDATE interim A 
SET INVOICE_NOT_CLOSED = (SELECT DECODE(H.invoice_status,’CLOSED’,0,1) 
FROM ap_invoice_header H
WHERE H.invoice_header_id=A.invoice_header_id
AND H.invoice_status <> ‘ CLOSED’);

The SET condition type is the SET clause of the UPDATE SQL statement. In EDM this is written as:

(SELECT DECODE(H.invoice_status,’CLOSED’,0,1) 
FROM ap_invoice_header H
WHERE H.invoice_header_id=A.invoice_header_id
AND H.invoice_status <> ‘ CLOSED’)

There are two things to note about how this SQL statement is constructed. First, a DECODE is used to enforce the rule. DECODE (in Oracle, CASE using ANSI SQL) allows you to use IF-ELSE logic. IF invoice_status = 'CLOSED', then set INVOICE_NOT_CLOSED to 0, which means it passed the rule. ELSE if invoice_status equals any other value, then set INVOICE_NOT_CLOSED to 1, which means it failed the rule. Second, a join to the interim table is included to ensure each row in the interim is updated - H.invoice_header_id=A.invoice_header_id.

The main difference between SET and WHERE is that SET updates every single row in the interim table whereas WHERE updates only the rows returned by the condition statement. For this reason the WHERE condition type is typically used in lieu of the SET condition type.