SQL to find which table data is stored?

Question

I know a table field value.
I don't know, which table that value is stored. I want to find that table from database.
What sql will find that?.
Please post me online links for tricky sql's like this...so i can master sql's of this kind.
Thanks for ur help.

Answer 1

Ok, here's my pseudo google DB:
michaels>  var val varchar2(5)
michaels>  exec :val := 'as'
PL/SQL procedure successfully completed.
michaels>  select distinct substr (:val, 1, 11) "Searchword",
                substr (table_name, 1, 14) "Table",
                substr (t.column_value.getstringval (), 1, 50) "Column/Value"
           from cols,
                table
                   (xmlsequence
                       (dbms_xmlgen.getxmltype ('select ' || column_name
                                                || ' from ' || table_name
                                                || ' where upper('
                                                || column_name
                                                || ') like upper(''%' || :val
                                                || '%'')'
                                               ).extract ('ROWSET/ROW/*')
                   ) t
--        where table_name in ('EMPLOYEES', 'JOB_HISTORY', 'DEPARTMENTS')
       order by "Table"
Searchword  Table          Column/Value                                     
as          DEPARTMENTS    <DEPARTMENT_NAME>Purchasing</DEPARTMENT_NAME>    
as          DEPARTMENTS    <DEPARTMENT_NAME>Treasury</DEPARTMENT_NAME>      
as          EMPLOYEES      <EMAIL>PVARGAS</EMAIL>                           
as          EMPLOYEES      <EMAIL>STOBIAS</EMAIL>                           
as          EMPLOYEES      <FIRST_NAME>Douglas</FIRST_NAME>                 
as          EMPLOYEES      <FIRST_NAME>Jason</FIRST_NAME>                   
as          EMPLOYEES      <JOB_ID>AD_ASST</JOB_ID>                         
as          EMPLOYEES      <LAST_NAME>Tobias</LAST_NAME>                    
as          EMPLOYEES      <LAST_NAME>Vargas</LAST_NAME>                    
as          JOB_HISTORY    <JOB_ID>AD_ASST</JOB_ID>                         
10 rows selected.Not as fast as google, so you better take a cup of tea or two ... ;-)