Update a column keeping old values and adding new one

Question

I have to update a column...
Select * from test;
RULE_NBR TYPE_TEXT
30     AAX,AAR,AAV,AAB,AAK
40     BBD,WWN,AAF,AAB,AAK
now I have to add BBB,WWW where rule_nbr = 30 and CCC,TTT where rule_nbr = 40
so this update stmt will do...
UPDATE TEST
SET type_text = 'AAX,AAR,AAV,AAB,AAK,BBB,WWW'
WHERE rule_nbr = '30';
update test
set TYPE_TEXT = 'BBD,WWN,AAF,AAB,AAK,CCC,TTT'
where rule_nbr = '40';
Just wondering is there any other way to update the same

Answer 1

user1692585 wrote:
I have to update a column...
Select * from test;
RULE_NBR TYPE_TEXT
30     AAX,AAR,AAV,AAB,AAK
40     BBD,WWN,AAF,AAB,AAK
now I have to add BBB,WWW where rule_nbr = 30 and CCC,TTT where rule_nbr = 40
so this update stmt will do...
UPDATE TEST
SET type_text = 'AAX,AAR,AAV,AAB,AAK,BBB,WWW'
WHERE rule_nbr = '30';
update test
set TYPE_TEXT = 'BBD,WWN,AAF,AAB,AAK,CCC,TTT'
where rule_nbr = '40';
Just wondering is there any other way to update the sameYou can do something liek below..But few questions - Why are you storing data like this..It is against normalization concept..You should store the RULE_TEXT values in multiple rows.That is how you should design your data model in an RDBMS
update test
set type_text = type_text||decode(rule_nbr,30,',BBB,WWW',40,',CCC,TTT')
where rule_nbr in (30,40);Edited by: jeneesh on Apr 25, 2013 2:28 PM