在所有表中的所有字段中搜索特定值(Oracle)

报价:

我试过用下面这句话 根据以下内容查找适当的列 我觉得应该叫什么名字,但是它 未返回任何结果。*

SELECT * from dba_objects WHERE
object_name like '%DTN%'

列不是对象。如果您的意思是希望列名类似于“%dtn%”,则需要的查询是:

SELECT owner, table_name, column_name FROM all_tab_columns WHERE column_name LIKE '%DTN%';

但如果“dtn”字符串只是你的猜测,那可能不会有帮助。

顺便问一下,您如何确定'1/22/2008p09rr8'是直接从单个列中选择的值?如果您根本不知道它来自哪里,那么它可能是几列的串联,或者是某个函数的结果,或者是嵌套表对象中的一个值。因此,您可能正在进行一场疯狂的追逐,试图检查每一列的值。您不能从显示该值的任何客户机应用程序开始,并尝试找出它使用什么查询来获取该值吗?

无论如何,DICIU的答案给出了一种生成SQL查询的方法,以检查每个表的每一列的值。您还可以使用PL/SQL块和动态SQL在一个SQL会话中完成类似的工作。下面是一些仓促编写的代码:

    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;
    /

你也可以通过一些方法提高效率。

在这种情况下,考虑到您要查找的值,您可以清楚地删除任何数字或日期类型的列,这将减少查询的数量。甚至可以将其限制为类型类似于“%char%”的列。

您可以这样为每个表生成一个查询,而不是每列一个查询:

SELECT * FROM table1
  WHERE column1 = 'value'
     OR column2 = 'value'
     OR column3 = 'value'
     ...
     ;

我对上面的代码做了一些修改,以使它在只搜索一个所有者时更快地工作。 您只需更改3个变量v_owner、v_data_type和v_search_string即可满足您的搜索需求。

SET SERVEROUTPUT ON SIZE 100000

DECLARE
  match_count INTEGER;
-- Type the owner of the tables you are looking at
  v_owner VARCHAR2(255) :='ENTER_USERNAME_HERE';

-- Type the data type you are look at (in CAPITAL)
-- VARCHAR2, NUMBER, etc.
  v_data_type VARCHAR2(255) :='VARCHAR2';

-- Type the string you are looking at
  v_search_string VARCHAR2(4000) :='string to search here...';

BEGIN
  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 '||t.column_name||' = :1'
    INTO match_count
    USING 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;
/

是的,您可以,您的DBA会讨厌您,并且会发现您将您的鞋子钉在地板上,因为这将导致大量的I/O,并在缓存清除时真正降低数据库性能。

select column_name from all_tab_columns c, user_all_tables u where c.table_name = u.table_name;

首先。

我将从运行查询开始,使用 v$session 以及 v$sqlarea . 此更改基于Oracle版本。这将缩小空间,而不是打击一切。

我知道这是个老话题。但我看到对这个问题的评论,问是否可以在 SQL 而不是使用 PL/SQL . 所以想发布一个解决方案。

下面的演示是为了 Search for a VALUE in all COLUMNS of all TABLES in an entire SCHEMA :

• 搜索A 字符类型

我们来看看价值 KING 在里面 SCOTT 图式。

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>

• 搜索A 数字类型

我们来看看价值 20 在里面 斯科特 图式。

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>

下面是另一个经过修改的版本,它将比较较低的子字符串匹配。这在Oracle11g中有效。

DECLARE
  match_count INTEGER;
-- Type the owner of the tables you are looking at
  v_owner VARCHAR2(255) :='OWNER_NAME';

-- Type the data type you are look at (in CAPITAL)
-- VARCHAR2, NUMBER, etc.
  v_data_type VARCHAR2(255) :='VARCHAR2';

-- Type the string you are looking at
  v_search_string VARCHAR2(4000) :='%lower-search-sub-string%';

BEGIN
  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 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;
/

我会这样做(生成您需要的所有选择)。 稍后可以将它们馈送到sqlplus:

echo "select table_name from user_tables;" | sqlplus -S user/pwd | grep -v "^--" | grep -v "TABLE_NAME" | grep "^[A-Z]" | while read sw;
do echo "desc $sw" | sqlplus -S user/pwd | grep -v "\-\-\-\-\-\-" | awk -F' ' '{print $1}' | while read nw;
do echo "select * from $sw where $nw='val'";
done;
done;

它产生:

select * from TBL1 where DESCRIPTION='val'
select * from TBL1 where ='val'
select * from TBL2 where Name='val'
select * from TBL2 where LNG_ID='val'

它的作用是-为每一个 table_name 从 user_tables 获取每个字段(从desc)并创建一个select*from表,其中字段等于'val'。

如果我们知道表名和列名,但想知道每个模式的字符串出现的次数:

Declare

owner VARCHAR2(1000);
tbl VARCHAR2(1000);
cnt number;
ct number;
str_sql varchar2(1000);
reason varchar2(1000);
x varchar2(1000):='%string_to_be_searched%';

cursor csr is select owner,table_name 
from all_tables where table_name ='table_name';

type rec1 is record (
ct VARCHAR2(1000));

type rec is record (
owner VARCHAR2(1000):='',
table_name VARCHAR2(1000):='');

rec2 rec;
rec3 rec1;
begin

for rec2 in csr loop

--str_sql:= 'select count(*) from '||rec.owner||'.'||rec.table_name||' where CTV_REMARKS like '||chr(39)||x||chr(39);
--dbms_output.put_line(str_sql);
--execute immediate str_sql

execute immediate 'select count(*) from '||rec2.owner||'.'||rec2.table_name||' where column_name like '||chr(39)||x||chr(39)
into rec3;
if rec3.ct <> 0 then
dbms_output.put_line(rec2.owner||','||rec3.ct);
else null;
end if;
end loop;
end;

我修改了Flood的脚本,以便为每个表执行一次,而不是为每个表的每一列执行一次,以便更快地执行。它需要Oracle 11g或更高版本。

    set serveroutput on size 100000

declare
    v_match_count integer;
    v_counter integer;

    -- The owner of the tables to search through (case-sensitive)
    v_owner varchar2(255) := 'OWNER_NAME';
    -- A string that is part of the data type(s) of the columns to search through (case-insensitive)
    v_data_type varchar2(255) := 'CHAR';
    -- The string to be searched for (case-insensitive)
    v_search_string varchar2(4000) := 'FIND_ME';

    -- Store the SQL to execute for each table in a CLOB to get around the 32767 byte max size for a VARCHAR2 in PL/SQL
    v_sql clob := '';
begin
    for cur_tables in (select owner, table_name from all_tables where owner = v_owner and table_name in 
                       (select table_name from all_tab_columns where owner = all_tables.owner and data_type like '%' ||  upper(v_data_type) || '%')
                       order by table_name) loop
        v_counter := 0;
        v_sql := '';

        for cur_columns in (select column_name from all_tab_columns where 
                            owner = v_owner and table_name = cur_tables.table_name and data_type like '%' || upper(v_data_type) || '%') loop
            if v_counter > 0 then
                v_sql := v_sql || ' or ';
            end if;
            v_sql := v_sql || 'upper(' || cur_columns.column_name || ') like ''%' || upper(v_search_string) || '%''';
            v_counter := v_counter + 1;
        end loop;

        v_sql := 'select count(*) from ' || cur_tables.table_name || ' where ' || v_sql;

        execute immediate v_sql
        into v_match_count;

        if v_match_count > 0 then
            dbms_output.put_line('Match in ' || cur_tables.owner || ': ' || cur_tables.table_name || ' - ' || v_match_count || ' records');
        end if;
    end loop;

    exception
        when others then
            dbms_output.put_line('Error when executing the following: ' || dbms_lob.substr(v_sql, 32600));
end;
/

搜索整个数据库的过程:

    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语句

  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;

样本结果

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.

修改代码以不敏感地使用like查询而不是查找完全匹配的大小写…

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;

我不想在SQL Promprt上有一个简单的解决方案。然而,有相当多的工具,比如toad和pl/sql开发人员,他们有一个GUI,用户可以在其中输入要搜索的字符串,并将返回找到这个字符串的表/过程/对象。

有一些免费的工具可以进行这种搜索,例如,这一个很好地工作,源代码可用: https://sites.google.com/site/freejansoft/dbsearch

您需要Oracle ODBC驱动程序和DSN才能使用此工具。

我对@lalit kumars的回答有以下问题:

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

解决方案是:

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"
/ 

--它运行完毕--没有错误

    SET SERVEROUTPUT ON SIZE 100000

DECLARE
   v_match_count     INTEGER;
   v_counter         INTEGER;




v_owner           VARCHAR2 (255) := 'VASOA';
v_search_string   VARCHAR2 (4000) := '99999';
v_data_type       VARCHAR2 (255) := 'CHAR';
v_sql             CLOB := '';

BEGIN
   FOR cur_tables
      IN (  SELECT owner, table_name
              FROM all_tables
             WHERE     owner = v_owner
                   AND table_name IN (SELECT table_name
                                        FROM all_tab_columns
                                       WHERE     owner = all_tables.owner
                                             AND data_type LIKE
                                                       '%'
                                                    || UPPER (v_data_type)
                                                    || '%')
          ORDER BY table_name)
   LOOP
      v_counter := 0;
      v_sql := '';

      FOR cur_columns
         IN (SELECT column_name, table_name
               FROM all_tab_columns
              WHERE     owner = v_owner
                    AND table_name = cur_tables.table_name
                    AND data_type LIKE '%' || UPPER (v_data_type) || '%')
      LOOP
         IF v_counter > 0
         THEN
            v_sql := v_sql || ' or ';
         END IF;

         IF cur_columns.column_name is not null
         THEN
            v_sql :=
                  v_sql
               || 'upper('
               || cur_columns.column_name
               || ') ='''
               || UPPER (v_search_string)||'''';

            v_counter := v_counter + 1;
         END IF;

      END LOOP;

      IF v_sql is  null
      THEN
         v_sql :=
               'select count(*) from '
            || v_owner
            || '.'
            || cur_tables.table_name;

      END IF;

      IF v_sql is not null
      THEN
         v_sql :=
               'select count(*) from '
            || v_owner
            || '.'
            || cur_tables.table_name
            || ' where '
            || v_sql;
      END IF;

      --v_sql := 'select count(*) from ' ||v_owner||'.'|| cur_tables.table_name ||' where '||  v_sql;


      --dbms_output.put_line(v_sql);
      --DBMS_OUTPUT.put_line (v_sql);

      EXECUTE IMMEDIATE v_sql INTO v_match_count;

      IF v_match_count > 0
      THEN
        DBMS_OUTPUT.put_line (v_sql);
        dbms_output.put_line('Match in ' || cur_tables.owner || ': ' || cur_tables.table_name || ' - ' || v_match_count || ' records');
      END IF;

   END LOOP;
EXCEPTION
   WHEN OTHERS
   THEN
      DBMS_OUTPUT.put_line (
            'Error when executing the following: '
         || DBMS_LOB.SUBSTR (v_sql, 32600));
END;
/

借来,稍加加强和简化 this Blog post 下面的简单SQL语句似乎可以很好地完成这项工作:

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";