Is it possible to search every field of every table for a particular value in Oracle?
There are hundreds of tables with thousands of rows in some tables so I know th
Modifying the code to search case-insensitively using a LIKE query instead of finding exact matches...
DECLARE
match_count INTEGER;
-- Type the owner of the tables you want to search.
v_owner VARCHAR2(255) :='USER';
-- Type the data type you're looking for (in CAPS). Examples include: VARCHAR2, NUMBER, etc.
v_data_type VARCHAR2(255) :='VARCHAR2';
-- Type the string you are looking for.
v_search_string VARCHAR2(4000) :='Test';
BEGIN
dbms_output.put_line( 'Starting the search...' );
FOR t IN (SELECT table_name, column_name FROM all_tab_cols where owner=v_owner and data_type = v_data_type) LOOP
EXECUTE IMMEDIATE
'SELECT COUNT(*) FROM '||t.table_name||' WHERE LOWER('||t.column_name||') LIKE :1'
INTO match_count
USING LOWER('%'||v_search_string||'%');
IF match_count > 0 THEN
dbms_output.put_line( t.table_name ||' '||t.column_name||' '||match_count );
END IF;
END LOOP;
END;
Procedure to Search Entire Database:
CREATE or REPLACE PROCEDURE SEARCH_DB(SEARCH_STR IN VARCHAR2, TAB_COL_RECS OUT VARCHAR2) IS
match_count integer;
qry_str varchar2(1000);
CURSOR TAB_COL_CURSOR IS
SELECT TABLE_NAME,COLUMN_NAME,OWNER,DATA_TYPE FROM ALL_TAB_COLUMNS WHERE DATA_TYPE in ('NUMBER','VARCHAR2') AND OWNER='SCOTT';
BEGIN
FOR TAB_COL_REC IN TAB_COL_CURSOR
LOOP
qry_str := 'SELECT COUNT(*) FROM '||TAB_COL_REC.OWNER||'.'||TAB_COL_REC.TABLE_NAME||
' WHERE '||TAB_COL_REC.COLUMN_NAME;
IF TAB_COL_REC.DATA_TYPE = 'NUMBER' THEN
qry_str := qry_str||'='||SEARCH_STR;
ELSE
qry_str := qry_str||' like '||SEARCH_STR;
END IF;
--dbms_output.put_line( qry_str );
EXECUTE IMMEDIATE qry_str INTO match_count;
IF match_count > 0 THEN
dbms_output.put_line( qry_str );
--dbms_output.put_line( TAB_COL_REC.TABLE_NAME ||' '||TAB_COL_REC.COLUMN_NAME ||' '||match_count);
TAB_COL_RECS := TAB_COL_RECS||'@@'||TAB_COL_REC.TABLE_NAME||'##'||TAB_COL_REC.COLUMN_NAME;
END IF;
END LOOP;
END SEARCH_DB;
Execute Statement
DECLARE
SEARCH_STR VARCHAR2(200);
TAB_COL_RECS VARCHAR2(200);
BEGIN
SEARCH_STR := 10;
SEARCH_DB(
SEARCH_STR => SEARCH_STR,
TAB_COL_RECS => TAB_COL_RECS
);
DBMS_OUTPUT.PUT_LINE('TAB_COL_RECS = ' || TAB_COL_RECS);
END;
Sample Results
Connecting to the database test.
SELECT COUNT(*) FROM SCOTT.EMP WHERE DEPTNO=10
SELECT COUNT(*) FROM SCOTT.DEPT WHERE DEPTNO=10
TAB_COL_RECS = @@EMP##DEPTNO@@DEPT##DEPTNO
Process exited.
Disconnecting from the database test.
I know this is an old topic. But I see a comment to the question asking if it could be done in SQL
rather than using PL/SQL
. So thought to post a solution.
The below demonstration is to Search for a VALUE in all COLUMNS of all TABLES in an entire SCHEMA:
Let's look for the value KING
in SCOTT
schema.
SQL> variable val varchar2(10)
SQL> exec :val := 'KING'
PL/SQL procedure successfully completed.
SQL> SELECT DISTINCT SUBSTR (:val, 1, 11) "Searchword",
2 SUBSTR (table_name, 1, 14) "Table",
3 SUBSTR (column_name, 1, 14) "Column"
4 FROM cols,
5 TABLE (xmlsequence (dbms_xmlgen.getxmltype ('select '
6 || column_name
7 || ' from '
8 || table_name
9 || ' where upper('
10 || column_name
11 || ') like upper(''%'
12 || :val
13 || '%'')' ).extract ('ROWSET/ROW/*') ) ) t
14 ORDER BY "Table"
15 /
Searchword Table Column
----------- -------------- --------------
KING EMP ENAME
SQL>
Let's look for the value 20
in SCOTT
schema.
SQL> variable val NUMBER
SQL> exec :val := 20
PL/SQL procedure successfully completed.
SQL> SELECT DISTINCT SUBSTR (:val, 1, 11) "Searchword",
2 SUBSTR (table_name, 1, 14) "Table",
3 SUBSTR (column_name, 1, 14) "Column"
4 FROM cols,
5 TABLE (xmlsequence (dbms_xmlgen.getxmltype ('select '
6 || column_name
7 || ' from '
8 || table_name
9 || ' where upper('
10 || column_name
11 || ') like upper(''%'
12 || :val
13 || '%'')' ).extract ('ROWSET/ROW/*') ) ) t
14 ORDER BY "Table"
15 /
Searchword Table Column
----------- -------------- --------------
20 DEPT DEPTNO
20 EMP DEPTNO
20 EMP HIREDATE
20 SALGRADE HISAL
20 SALGRADE LOSAL
SQL>
I was having following issues for @Lalit Kumars answer,
ORA-19202: Error occurred in XML processing
ORA-00904: "SUCCESS": invalid identifier
ORA-06512: at "SYS.DBMS_XMLGEN", line 288
ORA-06512: at line 1
19202. 00000 - "Error occurred in XML processing%s"
*Cause: An error occurred when processing the XML function
*Action: Check the given error message and fix the appropriate problem
Solution is:
WITH char_cols AS
(SELECT /*+materialize */ table_name, column_name
FROM cols
WHERE data_type IN ('CHAR', 'VARCHAR2'))
SELECT DISTINCT SUBSTR (:val, 1, 11) "Searchword",
SUBSTR (table_name, 1, 14) "Table",
SUBSTR (column_name, 1, 14) "Column"
FROM char_cols,
TABLE (xmlsequence (dbms_xmlgen.getxmltype ('select "'
|| column_name
|| '" from "'
|| table_name
|| '" where upper("'
|| column_name
|| '") like upper(''%'
|| :val
|| '%'')' ).extract ('ROWSET/ROW/*') ) ) t
ORDER BY "Table"
/
Quote:
I've tried using this statement below to find an appropriate column based on what I think it should be named but it returned no results.*
SELECT * from dba_objects WHERE object_name like '%DTN%'
A column isn't an object. If you mean that you expect the column name to be like '%DTN%', the query you want is:
SELECT owner, table_name, column_name FROM all_tab_columns WHERE column_name LIKE '%DTN%';
But if the 'DTN' string is just a guess on your part, that probably won't help.
By the way, how certain are you that '1/22/2008P09RR8' is a value selected directly from a single column? If you don't know at all where it is coming from, it could be a concatenation of several columns, or the result of some function, or a value sitting in a nested table object. So you might be on a wild goose chase trying to check every column for that value. Can you not start with whatever client application is displaying this value and try to figure out what query it is using to obtain it?
Anyway, diciu's answer gives one method of generating SQL queries to check every column of every table for the value. You can also do similar stuff entirely in one SQL session using a PL/SQL block and dynamic SQL. Here's some hastily-written code for that:
SET SERVEROUTPUT ON SIZE 100000
DECLARE
match_count INTEGER;
BEGIN
FOR t IN (SELECT owner, table_name, column_name
FROM all_tab_columns
WHERE owner <> 'SYS' and data_type LIKE '%CHAR%') LOOP
EXECUTE IMMEDIATE
'SELECT COUNT(*) FROM ' || t.owner || '.' || t.table_name ||
' WHERE '||t.column_name||' = :1'
INTO match_count
USING '1/22/2008P09RR8';
IF match_count > 0 THEN
dbms_output.put_line( t.table_name ||' '||t.column_name||' '||match_count );
END IF;
END LOOP;
END;
/
There are some ways you could make it more efficient too.
In this case, given the value you are looking for, you can clearly eliminate any column that is of NUMBER or DATE type, which would reduce the number of queries. Maybe even restrict it to columns where type is like '%CHAR%'.
Instead of one query per column, you could build one query per table like this:
SELECT * FROM table1
WHERE column1 = 'value'
OR column2 = 'value'
OR column3 = 'value'
...
;
Borrowing, slightly enhancing and simplifying from this Blog post the following simple SQL statement seems to do the job quite well:
SELECT DISTINCT (:val) "Search Value", TABLE_NAME "Table", COLUMN_NAME "Column"
FROM cols,
TABLE (XMLSEQUENCE (DBMS_XMLGEN.GETXMLTYPE(
'SELECT "' || COLUMN_NAME || '" FROM "' || TABLE_NAME || '" WHERE UPPER("'
|| COLUMN_NAME || '") LIKE UPPER(''%' || :val || '%'')' ).EXTRACT ('ROWSET/ROW/*')))
ORDER BY "Table";