Inserting Values in Oracle CLOB field

Posted on 2011-02-28
Last Modified: 2012-08-14

I have one oracle table where one of the field (Column value) datatype is CLOB.
When I query on th etable by select command taking one row as example the field vaule shows as below.
These are nothing but the user names.
I want to add one more username, for example 'asahoo001' to the existing list.

Can you please help me with teh insert query syntax.
Question by:AnandSahoo
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LVL 74

Expert Comment

ID: 34998998
are you looking to modify the data in the table?

or just select the clob and append the new name without actually modifying the underyling data?
LVL 77

Accepted Solution

slightwv (䄆 Netminder) earned 500 total points
ID: 34999048
What database version are you using?
In newer versions just concatenate it:

update table set clob_col = clob_col || chr(13) || chr(10) || 'newusername' where ...

the chr(13) and chr(10) addes the CR-LF to the clob that looks like yours has.

Author Comment

ID: 35006276
I want to add this new name without changing the existing ones.
In the above example, 3 names are there already.Want to add the 4th one. So total I wil have 4 names after inserting.
In few scenario's I may have more names (5,6,7,8) and I want to add one more. Will the above query work  for that also.
We are using oracle 10g.
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LVL 74

Expert Comment

ID: 35006982
sorry, I didn't ask that well  I guess

do you want to modify the table?
or simply return 4 names, 3 from the table plus 1 more?

in other words,  is this a read or a write operation?
LVL 77

Expert Comment

by:slightwv (䄆 Netminder)
ID: 35007163
>>Will the above query work  for that also.


If you are using pl/sql code you might look into dbms_lob.writeappend but for straight SQL, the above should work.

Author Comment

ID: 35007453
Dear sdstuber
This is a write operation. So wondering if teh update query will replace teh existing ones. I dont have staging environment for this to try.

Dear slightwv,
will try with just one record and confirm u back soon


Author Closing Comment

ID: 35121784
I am able to get a direction to work wih.

Thanks a ton

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