Question

I have a groups table which has a field called permissions that has a pipe separated value.
for example

permissions='1-1|2-2|3-2|4-2|5-2|6-2|7-1|8-2|9-2|10-2|11-2|12-2|13-3|14-2|15-2|16-2|

Now I want to append the following values to all permissions field in the groups table:
|17-0|18-0|19-0

So i need something like

UPDATE groups SET permissions='existing value+|17-0|18-0|19-0';

I am not sure how to go about it.( I am using informix)

Answer 1

Reading a bit about this, in informix concatenation with null gives null. If the field permissions can be null, the update needs to be changed a bit.

UPDATE groups SET permissions = NVL(permissions || '|17-0|18-0|19-0', '17-0|18-0|19-0');

If permissions can’t be null, then this is enough:

UPDATE groups SET permissions = permissions || '|17-0|18-0|19-0';