Count of rows from all views in Oracle with a condition

Question

I am trying to get count of all rows from views in oracle schema and my code is working fine. But when i try to add a condition like where actv_ind = 'Y', i am unable to get it working. Any suggestions on how to modify the code to make it working?

SELECT view_name,
TO_NUMBER(extractvalue(xmltype(dbms_xmlgen.getxml('select count(*) cnt from '||owner||'.'||view_name||
'where'||view_name||'.'||'actv_ind= Y')),'/ROWSET/ROW/CNT')) as VIEW_CNT
FROM all_views
WHERE owner = 'ABC'  AND view_name not in ('LINK$')

I am getting the error ACTV_IND : Invalid Identifier.

Answer 1

The error messages from DBMS_XMLGEN are not very helpful so you need to be very careful with the syntax of the SQL statement. Add a space before and after the where, and add quotation marks around the Y:

SELECT view_name,
TO_NUMBER(extractvalue(xmltype(dbms_xmlgen.getxml('select count(*) cnt from '||owner||'.'||view_name||
' where '||view_name||'.'||'actv_ind= ''Y''')),'/ROWSET/ROW/CNT')) as VIEW_CNT
FROM all_views
WHERE owner = 'ABC'  AND view_name not in ('LINK$');

The query still assumes that every view contains the column ACTV_IND. If that is not true, you might want to base the query off of DBA_TAB_COLUMNS WHERE COLUMN_NAME = 'ACTV_IND'.

Here's a simple sample schema I used for testing:

create user abc identified by abc;
create or replace view abc.view1 as select 1 id, 'Y' actv_ind from dual;
create or replace view abc.view2 as select 2 id, 'N' actv_ind from dual;