Assigning NEW. anomoly

<div class="Section1"><p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size:
10.0pt;font-family:Arial;color:navy">Hello,</span></font><p class="MsoNormal"><font color="navy" face="Arial"
size="2"><spanstyle="font-size: 
10.0pt;font-family:Arial;color:navy"> </span></font><p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size:
10.0pt;font-family:Arial;color:navy">I have a trigger function designed to encrypt source data on
insert/update.</span></font><pclass="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 
10.0pt;font-family:Arial;color:navy">I have a problem where an assignment isn’t happening, and I don’t understand why.
</span></font><pclass="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 
10.0pt;font-family:Arial;color:navy">Any thoughts</span></font><p class="MsoNormal"><font color="navy" face="Arial"
size="2"><spanstyle="font-size: 
10.0pt;font-family:Arial;color:navy"> </span></font><p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size:
10.0pt;font-family:Arial;color:navy">In the function, I unnecessarily reset new.pii_ccard_number to null. 
</span></font><pclass="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 
10.0pt;font-family:Arial;color:navy">It must be null already for the else condition to apply. </span></font><p
class="MsoNormal"><fontcolor="navy" face="Arial" size="2"><span style="font-size: 
10.0pt;font-family:Arial;color:navy">The problem is that the following statement  NEW.pi2_pii_ccard_number=null;
</span></font><pclass="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 
10.0pt;font-family:Arial;color:navy">Doesn’t appear to be executing.  After the statement completes, the pi2 column
Isn’tset to null. </span></font><p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 
10.0pt;font-family:Arial;color:navy"> </span></font><p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size:
10.0pt;font-family:Arial;color:navy">However when I change the function and remove the highlighted line it works
settingpi2 to null.</span></font><p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 
10.0pt;font-family:Arial;color:navy">Really weird.</span></font><p class="MsoNormal"><font color="navy" face="Arial"
size="2"><spanstyle="font-size: 
10.0pt;font-family:Arial;color:navy">Thanks</span></font><p class="MsoNormal"><font color="navy" face="Arial"
size="2"><spanstyle="font-size: 
10.0pt;font-family:Arial;color:navy">Doug</span></font><p class="MsoNormal"><font color="navy" face="Arial"
size="2"><spanstyle="font-size: 
10.0pt;font-family:Arial;color:navy"> </span></font><p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size:
10.0pt;font-family:Arial;color:navy"> </span></font><p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size:
10.0pt;font-family:Arial;color:navy">CREATE OR REPLACE FUNCTION bop.amex_ccr_settlement_encrypt()</span></font><p
class="MsoNormal"><fontcolor="navy" face="Arial" size="2"><span style="font-size: 
10.0pt;font-family:Arial;color:navy">  RETURNS "trigger" AS</span></font><p class="MsoNormal"><font color="navy"
face="Arial"size="2"><span style="font-size: 
10.0pt;font-family:Arial;color:navy">$BODY$ BEGIN If NEW.pii_ccard_number is not null then </span></font><p
class="MsoNormal"><fontcolor="navy" face="Arial" size="2"><span style="font-size: 
10.0pt;font-family:Arial;color:navy">                
NEW.pi2_pii_ccard_number=dba_work.owwencrypt(new.pii_ccard_number,new.amex_ccr_settlement_id);</span></font><p
class="MsoNormal"><fontcolor="navy" face="Arial" size="2"><span style="font-size: 
10.0pt;font-family:Arial;color:navy">                 NEW.pii_ccard_number=''; </span></font><p class="MsoNormal"><font
color="navy"face="Arial" size="2"><span style="font-size: 
10.0pt;font-family:Arial;color:navy">                 else </span></font><p class="MsoNormal"><font color="navy"
face="Arial"size="2"><span style="font-size: 
10.0pt;font-family:Arial;color:navy">                 NEW.pi2_pii_ccard_number=null; </span></font><p
class="MsoNormal"><b><fontcolor="navy" face="Arial" size="2"><span
style="font-size:10.0pt;font-family:Arial;color:navy;font-weight:bold">                
NEW.pii_ccard_number=null;</span></font></b><pclass="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size:
10.0pt;font-family:Arial;color:navy">end if; RETURN NEW; END; $BODY$</span></font><p class="MsoNormal"><font
color="navy"face="Arial" size="2"><span style="font-size: 
10.0pt;font-family:Arial;color:navy">  LANGUAGE 'plpgsql' VOLATILE;</span></font><p class="MsoNormal"><font
face="Arial"size="2"><span style="font-size:10.0pt; 
font-family:Arial"> </span></font><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial">CREATE TRIGGER amex_ccr_settlement_encrypt_0306bak</span></font><p class="MsoNormal"><font
face="Arial"size="2"><span style="font-size:10.0pt; 
font-family:Arial">  BEFORE INSERT OR UPDATE</span></font><p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size:10.0pt;
font-family:Arial">  ON bop.amex_ccr_settlement_0306bak</span></font><p class="MsoNormal"><font face="Arial"
size="2"><spanstyle="font-size:10.0pt; 
font-family:Arial">  FOR EACH ROW</span></font><p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size:10.0pt;
font-family:Arial">  EXECUTE PROCEDURE bop.amex_ccr_settlement_encrypt();</span></font><p class="MsoNormal"><font
face="Arial"size="2"><span style="font-size:10.0pt; 
font-family:Arial">COMMENT ON TRIGGER amex_ccr_settlement_encrypt ON bop.amex_ccr_settlement IS 'version:20100305_0912
generatedon 2010-03-06 08:01:57.836201-06';</span></font><p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size:10.0pt;
font-family:Arial"> </span></font><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial">update  bop.amex_ccr_settlement_0306bak a</span></font><p class="MsoNormal"><font face="Arial"
size="2"><spanstyle="font-size:10.0pt; 
font-family:Arial">set pii_ccard_number = null</span></font><p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size:10.0pt;
font-family:Arial">from bop.amex_ccr_settlement_keys b</span></font><p class="MsoNormal"><font face="Arial"
size="2"><spanstyle="font-size:10.0pt; 
font-family:Arial">where  b.amex_ccr_settlement_id = a.amex_ccr_settlement_id and pi2_pii_ccard_number is not null and
b.pii_ccard_numberis null</span></font><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt; 
font-family:Arial">;</span></font><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial"> </span></font><p class="MsoNormal"><strong><b><font face="Arial" size="2"><span style="font-size:
10.0pt;font-family:Arial">Doug Little</span></font></b></strong><p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size:10.0pt;
font-family:Arial">Sr. Data Warehouse Architect | Enterprise Data Management | Orbitz Worldwide </span></font><p
class="MsoNormal"style="margin-right:-1.25in"><font face="Arial" size="2"><span
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