[Oracle]根据字段值全库搜索相关数据表和字段
2024-08-28 07:35:23
这个需求比较冷门，但对于在某些特定的情况下，还是会有这样的需要的。好在Oracle实现还比较方便，用存储过程则轻松实现。
查询字符串：
create or replace procedure search_string(pString in varchar) as
cursor all_tab_cursor is
select a.owner, a.table_name, b.column_name
from dba_tables a, dba_tab_columns b, dba_objects c
where a.owner = b.owner
and a.table_name = b.table_name
and a.table_name = c.object_name
--and a.owner in ('XXX') --用户可选
and b.data_type in ('VARCHAR2','CHAR','NCHAR','NCLOB','NVARCHAR2')
and c.object_type = 'TABLE'
order by a.owner,a.table_name,b.column_id;
refAllTab all_tab_cursor%rowtype; -------------- sSql varchar(4000);
nCount number; begin
DBMS_OUTPUT.Enable(4000000); open all_tab_cursor;
loop
fetch all_tab_cursor
into refAllTab;
exit when all_tab_cursor%notfound; sSql := 'SELECT COUNT(1) FROM ' || refAllTab.Owner || '.' ||
refAllTab.Table_Name || ' WHERE ' || refAllTab.Column_Name ||
' = ''' || pString || '''';
--DBMS_OUTPUT.PUT_LINE(sSql);
execute immediate sSql
into nCount; if nCount > 0 then
DBMS_OUTPUT.PUT_LINE(refAllTab.Owner || '.' || refAllTab.Table_Name || '.' ||
refAllTab.Column_Name || ' = ' || nCount);
end if; end loop;
close all_tab_cursor;
end search_string;
查询包含字符串：
create or replace procedure search_string_like(pString in varchar) as
cursor all_tab_cursor is
select a.owner, a.table_name, b.column_name
from dba_tables a, dba_tab_columns b, dba_objects c
where a.owner = b.owner
and a.table_name = b.table_name
and a.table_name = c.object_name
--and a.owner in ('XXX') --用户可选
and b.data_type in ('VARCHAR2','CHAR','CLOB','NCHAR','NCLOB','NVARCHAR2')
and c.object_type = 'TABLE'
order by a.owner,a.table_name,b.column_id;
refAllTab all_tab_cursor%rowtype; -------------- sSql varchar(4000);
nCount number; begin
DBMS_OUTPUT.Enable(4000000); open all_tab_cursor;
loop
fetch all_tab_cursor
into refAllTab;
exit when all_tab_cursor%notfound; sSql := 'SELECT COUNT(1) FROM ' || refAllTab.Owner || '.' ||
refAllTab.Table_Name || ' WHERE ' || refAllTab.Column_Name ||
' LIKE ''%' || pString || '%''';
--DBMS_OUTPUT.PUT_LINE(sSql);
execute immediate sSql
into nCount; if nCount > 0 then
DBMS_OUTPUT.PUT_LINE(refAllTab.Owner || '.' || refAllTab.Table_Name || '.' ||
refAllTab.Column_Name || ' = ' || nCount);
end if; end loop;
close all_tab_cursor;
end search_string_like;
查询数字：
create or replace procedure search_number(pNumber in number) as
cursor all_tab_cursor is
select a.owner, a.table_name, b.column_name
from dba_tables a, dba_tab_columns b, dba_objects c
where a.owner = b.owner
and a.table_name = b.table_name
and a.table_name = c.object_name
--and a.owner in ('XXX') --用户可选
and b.data_type in ('FLOAT','NUMBER')
and c.object_type = 'TABLE'
order by a.owner,a.table_name,b.column_id;
refAllTab all_tab_cursor%rowtype; -------------- sSql varchar(4000);
nCount number; begin
DBMS_OUTPUT.Enable(4000000); open all_tab_cursor;
loop
fetch all_tab_cursor
into refAllTab;
exit when all_tab_cursor%notfound; sSql := 'SELECT COUNT(1) FROM ' || refAllTab.Owner || '.' ||
refAllTab.Table_Name || ' WHERE ' || refAllTab.Column_Name ||
' = ' || pNumber;
--DBMS_OUTPUT.PUT_LINE(sSql);
execute immediate sSql
into nCount; if nCount > 0 then
DBMS_OUTPUT.PUT_LINE(refAllTab.Owner || '.' || refAllTab.Table_Name || '.' ||
refAllTab.Column_Name || ' = ' || nCount);
end if; end loop;
close all_tab_cursor;
end search_number;
查询范围数字：
create or replace procedure search_number_between(pStartNumber in number, pEndNumber in number) as
cursor all_tab_cursor is
select a.owner, a.table_name, b.column_name
from dba_tables a, dba_tab_columns b, dba_objects c
where a.owner = b.owner
and a.table_name = b.table_name
and a.table_name = c.object_name
--and a.owner in ('XXX') --用户可选
and b.data_type in ('FLOAT','NUMBER')
and c.object_type = 'TABLE'
order by a.owner,a.table_name,b.column_id;
refAllTab all_tab_cursor%rowtype; -------------- sSql varchar(4000);
nCount number; begin
DBMS_OUTPUT.Enable(4000000); open all_tab_cursor;
loop
fetch all_tab_cursor
into refAllTab;
exit when all_tab_cursor%notfound; sSql := 'SELECT COUNT(1) FROM ' || refAllTab.Owner || '.' ||
refAllTab.Table_Name || ' WHERE ' || refAllTab.Column_Name ||
' BETWEEN ' || pStartNumber || ' AND ' || pEndNumber;
--DBMS_OUTPUT.PUT_LINE(sSql);
execute immediate sSql
into nCount; if nCount > 0 then
DBMS_OUTPUT.PUT_LINE(refAllTab.Owner || '.' || refAllTab.Table_Name || '.' ||
refAllTab.Column_Name || ' = ' || nCount);
end if; end loop;
close all_tab_cursor;
end search_number_between;
查询日期：
create or replace procedure search_date(pToDateString in varchar) as
cursor all_tab_cursor is
select a.owner, a.table_name, b.column_name
from dba_tables a, dba_tab_columns b, dba_objects c
where a.owner = b.owner
and a.table_name = b.table_name
and a.table_name = c.object_name
--and a.owner in ('XXX') --用户可选
and (b.data_type = 'DATE' or b.data_type like 'TIMESTAMP%')
and c.object_type = 'TABLE'
order by a.owner, a.table_name, b.column_id;
refAllTab all_tab_cursor%rowtype; -------------- sSql varchar(4000);
nCount number; begin
DBMS_OUTPUT.Enable(4000000); open all_tab_cursor;
loop
fetch all_tab_cursor
into refAllTab;
exit when all_tab_cursor%notfound; sSql := 'SELECT COUNT(1) FROM ' || refAllTab.Owner || '.' ||
refAllTab.Table_Name || ' WHERE ' || refAllTab.Column_Name ||
' = ' || pToDateString;
--DBMS_OUTPUT.PUT_LINE(sSql);
execute immediate sSql
into nCount; if nCount > 0 then
DBMS_OUTPUT.PUT_LINE(refAllTab.Owner || '.' || refAllTab.Table_Name || '.' ||
refAllTab.Column_Name || ' = ' || nCount);
end if; end loop;
close all_tab_cursor;
end search_date;
查询范围日期：
create or replace procedure search_date_between(pStartToDateString in varchar, pEndToDateString in varchar) as
cursor all_tab_cursor is
select a.owner, a.table_name, b.column_name
from dba_tables a, dba_tab_columns b, dba_objects c
where a.owner = b.owner
and a.table_name = b.table_name
and a.table_name = c.object_name
--and a.owner in ('XXX') --用户可选
and (b.data_type = 'DATE' or b.data_type like 'TIMESTAMP%')
and c.object_type = 'TABLE'
order by a.owner, a.table_name, b.column_id;
refAllTab all_tab_cursor%rowtype; -------------- sSql varchar(4000);
nCount number; begin
DBMS_OUTPUT.Enable(4000000); open all_tab_cursor;
loop
fetch all_tab_cursor
into refAllTab;
exit when all_tab_cursor%notfound; sSql := 'SELECT COUNT(1) FROM ' || refAllTab.Owner || '.' ||
refAllTab.Table_Name || ' WHERE ' || refAllTab.Column_Name ||
' BETWEEN ' || pStartToDateString || ' AND ' || pEndToDateString;
--DBMS_OUTPUT.PUT_LINE(sSql);
execute immediate sSql
into nCount; if nCount > 0 then
DBMS_OUTPUT.PUT_LINE(refAllTab.Owner || '.' || refAllTab.Table_Name || '.' ||
refAllTab.Column_Name || ' = ' || nCount);
end if; end loop;
close all_tab_cursor;
end search_date_between;
执行范例：
exec search_string('测试');
exec search_string_like('包含测试');
exec search_number(100);
exec search_number_between(100, 200);
exec search_date('to_char(''2013-01-01'',''yyyy-mm-dd'')');
exec search_date_between('to_char(''2013-01-01'',''yyyy-mm-dd'')','to_char(''2014-01-01'',''yyyy-mm-dd'')');
以上存储过程执行完毕后，会输出格式文本：用户.表名.字段名 = 记录数，应用时根据实际情况修改。
转载请注明原文地址：http://www.cnblogs.com/litou/p/3926881.html
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