Need a Query to search a value from all tables.

Question

Hi,
I would like to know, is there any way that we could search a string from all the tables.
For example I need to find a STRING 'hello world', on which table it presents. I want to search it from all the tables, as there might be a situtation
where we dont knwo which table the value gets stored.
REgards
Suresh

Answer 1

Run this code ---this is only search for required value in VARCHAR2 column.as per ur requirement u can change it to oher dataype..
Reply if its helpful to you
DECLARE
S SYS_REFCURSOR;
CURSOR c_user_col IS
SELECT TABLE_NAME,COLUMN_NAME,DATA_TYPE FROM USER_TAB_COLUMNS,TAB
WHERE TABLE_NAME=TNAME AND TABTYPE='TABLE'
ORDER BY TABLE_NAME;
TYPE TAB_LIST
IS
RECORD
TABLE_NAME VARCHAR2(1000),
COLUMN_NAME VARCHAR2(1000),
DATA_TYPE VARCHAR2(100));
TYPE T_TAB_LIST
IS
TABLE OF TAB_LIST;
L_TAB_LIST T_TAB_LIST := T_TAB_LIST();
L_STMT CLOB;
l_exists NUMBER;
BEGIN
FOR i IN c_user_col LOOP
L_TAB_LIST.EXTEND;
L_TAB_LIST(L_TAB_LIST.LAST).TABLE_NAME := I.TABLE_NAME;
L_TAB_LIST(L_TAB_LIST.LAST).COLUMN_NAME := i.COLUMN_NAME;
L_TAB_LIST(L_TAB_LIST.LAST).DATA_TYPE := i.DATA_TYPE;
END LOOP;
FOR i in 1..L_TAB_LIST.COUNT LOOP
l_exists := NULL;
IF L_TAB_LIST(I).DATA_TYPE = 'VARCHAR2' THEN
L_STMT := 'SELECT 1 FROM '||L_TAB_LIST(I).TABLE_NAME||' WHERE '||L_TAB_LIST(I).COLUMN_NAME||'=''samplesdfsdfsdf''';
OPEN S FOR L_STMT;
FETCH S INTO l_exists;
CLOSE S;
IF l_exists IS NULL THEN
NULL;
ELSE
DBMS_OUTPUT.PUT_LINE('Table name: '||L_TAB_LIST(I).TABLE_NAME||'--Column Name: '||L_TAB_LIST(I).COLUMN_NAME);
DBMS_OUTPUT.PUT_LINE(L_STMT);
END IF;
END IF;
END LOOP;
END;