Finding column,table names in a schema with search data

Question

Hi All,
I want to list all the columns,tables in a schema with any search value.
Ex: Take an example of EMP table, if I search with 'MARTIN', result should be ename (column name) , emp(table name).
Can you please help me on this regard to write a query.
Regards,
Rajasekhar

Answer 1

SQL> set line 1000
SQL> VAR val VARCHAR2(30)
SQL> execute :val:='SMITH';
PL/SQL procedure successfully completed.
SQL> SELECT   DISTINCT
  2               SUBSTR(:val, 1, 11) "Searchword",
  3               SUBSTR(table_name, 1, 14) "Table",
  4               SUBSTR(t.COLUMN_VALUE.getstringval(), 1, 50) "Column/Value"
  5  FROM     cols,
  6               table(XMLSEQUENCE(DBMS_XMLGEN.getxmltype(   'select '
  7                                                        || column_name
  8                                                        || ' from '
  9                                                        || table_name
10                                                       || ' where (UPPER('''
11                                                       || :val
12                                                       || ''')=UPPER('
13                                                       || column_name
14                                                       || '))').EXTRACT('ROWSET/ROW/*'))) t
15  WHERE    table_name IN ('EMP', 'DEPT','EMPLOYEES') --limiting the table names, you can omit this.
16  ORDER BY "Table";
Searchword                                   Table                                                    Column/Value
SMITH                                        EMP                                                      <ENAME>SMITH</ENAME>
SMITH                                        EMPLOYEES                                                <LAST_NAME>Smith</LAST_NAME>