是否可以在每个表的每个字段中搜索Oracle中的特定值?
有几百个表,有些表中有成千上万的行,因此我知道这可能需要很长时间才能查询。但是我唯一知道的是我要查询的字段的值是1/22/2008P09RR8
。<
我尝试使用下面的语句根据我认为应命名的内容找到合适的列,但未返回任何结果。
SELECT * from dba_objects
WHERE object_name like '%DTN%'
这个数据库上绝对没有文档,我也不知道该字段是从哪里提取的。
有什么想法吗?
是否可以在每个表的每个字段中搜索Oracle中的特定值?
有几百个表,有些表中有成千上万的行,因此我知道这可能需要很长时间才能查询。但是我唯一知道的是我要查询的字段的值是1/22/2008P09RR8
。<
我尝试使用下面的语句根据我认为应命名的内容找到合适的列,但未返回任何结果。
SELECT * from dba_objects
WHERE object_name like '%DTN%'
这个数据库上绝对没有文档,我也不知道该字段是从哪里提取的。
有什么想法吗?
Answers:
引用:
我尝试使用以下语句根据我认为应命名的内容找到合适的列,但未返回任何结果。*
SELECT * from dba_objects WHERE object_name like '%DTN%'
列不是对象。如果您希望列名称类似于'%DTN%',则所需查询为:
SELECT owner, table_name, column_name FROM all_tab_columns WHERE column_name LIKE '%DTN%';
但是,如果'DTN'字符串只是您的猜测,那可能无济于事。
顺便说一句,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的来源,则可能是几列的串联,或者是某些函数的结果,或者是嵌套表对象中的值。因此,您可能想尽办法检查每个列的值。您是否不能从任何显示该值的客户端应用程序开始,然后尝试找出它用于获取该值的查询?
无论如何,diciu的答案提供了一种生成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会话中完全完成类似的工作。这是一些草草编写的代码:
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;
/
您也可以通过某些方法提高效率。
在这种情况下,给定您要查找的值,您可以清楚地消除任何NUMBER或DATE类型的列,这将减少查询的数量。甚至可能将其限制为类型为'%CHAR%'的列。
您可以像这样在每个表中构建一个查询,而不是对每列查询一次:
SELECT * FROM table1
WHERE column1 = 'value'
OR column2 = 'value'
OR column3 = 'value'
...
;
all_tab_columns
not 驱动all_tables
。我已经解决了。
如果您只在一个所有者中搜索,我对上面的代码做了一些修改,以使其工作更快。您只需要更改3个变量v_owner,v_data_type和v_search_string以适合您要搜索的内容。
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;
/
'SELECT COUNT(*) FROM "'||t.table_name||'" WHERE "'||t.column_name||'" = :1'
dbms_output
什么?因为查询已在DataGrip中成功执行,但此后没有看到任何结果。
这是另一个比较版本,将比较较低的子字符串匹配。这在Oracle 11g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;
/
我知道这是一个老话题。但是我看到对该问题的评论,询问是否可以SQL
使用而不是使用来完成PL/SQL
。因此考虑发布解决方案。
下面的演示是在整个SCHEMA中的所有表的所有列中搜索一个VALUE:
让我们KING
在SCOTT
模式中寻找值。
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>
让我们20
在SCOTT
模式中寻找值。
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>
Error occurred in XML processing ORA-00932: inconsistent datatypes: expected NUMBER got BLOB
我会做这样的事情(生成您需要的所有选择)。您可以稍后将它们提供给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-对于每个table_name
from user_tables
(从desc)获取每个字段,并在其中table等于'val'的表中创建一个select *。
我修改了Flood脚本,使其对每个表执行一次,而不是对每个表的每一列执行一次,以加快执行速度。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;
/
我在关注@Lalit Kumars答案时遇到了一些问题,
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
解决方法是:
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"
/
如果我们知道表和列的名称,但想找出每个模式出现的字符串的次数:
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;
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;
执行语句
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;
样品结果
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.
有一些免费的工具可以进行此类搜索,例如,该工具可以正常工作,并且源代码可用: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。
修改代码以使用LIKE查询而不区分大小写地搜索而不是查找完全匹配...
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;
-运行完成-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;
/
从此Blog帖子中借用,稍微增强和简化以下简单的SQL语句似乎可以很好地完成工作:
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";
SELECT * from all_objects WHERE object_name like '%your_string%';