问题
I need to search all tables in an oracle database for a specific string and return all the records where that string is found. I am working with SQL Developer. There are several really useful scripts and stored procedures that have been posted online that provide a way to search the entire database and they all seem to be able to return the table name and the column name where the string is found. I actually want to see the rows like a select * statement but I would like it to be for all the tables in my database. I want to note that I am very much a beginner and I'm not familiar with advanced PL/SQL scripting and database concepts so though I've tried and tried I can't seem to figure it out so any input would be appreciated.
Here is a script that I was trying to modify (someone else's solution)
declare
l_count number := 0;
l_str varchar2(20) := '%test%';
begin
for rec in (select table_name, column_name
from user_tab_columns
where data_type in ( 'VARCHAR2' , 'VARCHAR', 'CHAR' ) ) loop
execute immediate 'select count(*) from '||rec.table_name||
' where '||rec.column_name||' like '''||l_str||'''' into l_count;
if l_count > 0 then
dbms_output.put_line('Table : '||rec.table_name||' '||rec.column_name);
end if;
end loop;
end;
/
回答1:
Are you trying to build a full database search based on a key word? You can get table names , table column names and row counts by following code. But you cannot get row data within same code, you can get row data based on search results.
--Set output size
SET serveroutput ON size 1000000
DECLARE
-- var table Name for cursor loop.
t_c1_tname user_tab_columns.table_name%TYPE;
-- var column name for dynamic sql statement.
t_c1_cname user_tab_columns.column_name%TYPE;
-- var string for dynamic sql statement.
t_command VARCHAR2(200);
-- var for your search key word.
l_str varchar2(20) := '%test%';
-- var for dynamic cursor.
t_cid INTEGER;
-- var for total row counts.
t_total_records NUMBER(10);
-- var for stat of executing dynamic sql statement.
stat INTEGER;
--var for each loop row counts.
row_count INTEGER;
-- var for minimum search result, here I set value = 0;
t_limit INTEGER := 0; -- Only show tables with more rows
-- cursor gets all table name, column name.
CURSOR c1 IS select table_name, column_name
from user_tab_columns
where data_type in ( 'VARCHAR2' , 'VARCHAR', 'CHAR' );
BEGIN
t_limit := 0;
OPEN c1;
LOOP
FETCH c1 INTO t_c1_tname,t_c1_cname;
EXIT WHEN c1%NOTFOUND;
-- Here create dynamic sql statement.
t_command := 'SELECT COUNT(0) FROM '||t_c1_tname || ' where ' || t_c1_cname ||' like '''|| l_str||'''';
t_cid := DBMS_SQL.OPEN_CURSOR;
DBMS_SQL.PARSE(t_cid,t_command,DBMS_SQL.native);
DBMS_SQL.DEFINE_COLUMN(t_cid,1,t_total_records);
-- Here execute dynamic sql statement.
stat := DBMS_SQL.EXECUTE(t_cid);
row_count := DBMS_SQL.FETCH_ROWS(t_cid);
-- Here get total row counts for each loop.
DBMS_SQL.COLUMN_VALUE(t_cid,1,t_total_records);
IF t_total_records > t_limit THEN
--Here output results
DBMS_OUTPUT.PUT_LINE(RPAD(t_c1_tname,55,' ')||RPAD(t_c1_cname,55,' ')||
TO_CHAR(t_total_records,'99999999')||' record(s)');
-- here you can insert results into your table.
--INSERT INTO search_db_results VALUES (t_c1_tname,t_c1_cname,t_total_records);
END IF;
DBMS_SQL.CLOSE_CURSOR(t_cid);
END LOOP;
CLOSE c1;
-- COMMIT if you have any insert statement.
-- COMMIT;
END;
/
来源：https://stackoverflow.com/questions/12921792/oracle-database-search-all-tables-for-string-return-row-data