create or replace function search_in_table(
owner varchar2,
table_name varchar2,
search_string varchar2)
return varchar2 is
stmt varchar2(32700);
col varchar2(32700);
begin
stmt := 'select ';
for c in (
select column_name
from all_tab_columns
where all_tab_columns.table_name=search_in_table.table_name
and all_tab_columns.owner=search_in_table.owner
and data_type like '%CHAR%' )
loop
stmt := stmt || 'max(case when "' || c.column_name ||'" REGEXP_LIKE(''' || c.column_name || ''',"' || search_string || '") then ''' || c.column_name|| ' ''' || ' else null end) || ';
end loop;
stmt:= stmt||'nvl2(count(*),null,null) from "'||owner||'"."'||table_name||'"';
execute immediate stmt into col;
return col;
end;