On Monday, 28 April 2014 10:56 PM, Tom Lane <t...@sss.pgh.pa.us> wrote:

Greg Stark <st...@mit.edu> writes:

>So they pretty much would have to make concat() treat NULL as empty.


could it be problematic if I update pg_operator catalogue entry for ||, 
call to concat() function instead of texcat(), in my production environment ? 

for eg.
 oprname | oprleft | oprright | oprresult | oprcode 
---------+---------+----------+-----------+--------- 
 ||      |    25   |   25     |     25    | concat 
(1 row) 


result would be 

test=# select  'abc' || NULL;                                                   
                         ; 
 ?column? 
---------- 
 abc 
(1 row) 

Thank for your help.

Regards,
Amul Sul


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