Oracle数据库 如何根据某个字段名的值去查询存在的表列表

Posted 2021-10-22 星小梦

declare
  v_sql  varchar2(1000);
  data_count number;
begin
    -- OWNER是模式名   tablespace_name是表空间
  for cur_table in (select distinct  table_name
                      from ALL_ALL_TABLES WHERE OWNER=\'NEWJNCJEXT\' and tablespace_name=\'JNCJ\') loop
    for cur_column in (select distinct column_name,data_type from all_tab_columns a where a.OWNER=\'NEWJNCJEXT\' and  a.TABLE_NAME = cur_table.table_name) loop
        
            if cur_column.data_type = \'VARCHAR2\' then
                 
                 -- SQL 拼接
                 v_sql := \'select count(1) from \' || cur_table.table_name ||
                                 \'  where \' || cur_column.column_name || \'=\'\'EEB10A60-7117-11DE-8A60-CAAB113F4FFE\'\'\';

                    -- 执行SQL
                execute immediate v_sql into data_count;
                if (data_count > 0) then
                    DBMS_OUTPUT.PUT_LINE(v_sql);
                end if;
            end if;
    end loop;
  end loop;
end;

以上SQL是在Oracle 11g下执行的

 

 

关于  DBMS_OUTPUT.PUT_LINE  的输出方式，你可以参考 https://docs.oracle.com/cd/E11882_01/appdev.112/e25519/controlstatements.htm#LNPLS399 里的一些示例

 

复制请注明出处,在世界中挣扎的灰太狼

修改数据库中所有表中包含某个字段名的值

1、查询包含某字段的所有表

select object_name(id) objName,Name as colName
from syscolumns
where (name like‘%你要查询的字段名%‘)
and id in(select id from sysobjects where xtype=‘u‘)
order by objname
;
2、查询包含某字段的所有存储过程

SELECT obj.Name 存储过程名, sc.TEXT 存储过程内容 
 
FROM syscomments sc 
 
INNER JOIN sysobjects obj ON sc.Id = obj.ID 
 
WHERE sc.TEXT LIKE ‘%你要查询的字段名%‘  

　　

declare
	@verId UNIQUEIDENTIFIER=‘xxxxx‘

BEGIN
	SET NOCOUNT ON;
	DECLARE @sql NVARCHAR(max)

	DECLARE cursorClearUserData CURSOR LOCAL FOR  SELECT
		表名       = D.name 
		FROM
			syscolumns A
		LEFT JOIN
			systypes B
		ON
			A.xusertype=B.xusertype
		INNER JOIN
			sysobjects D
		ON
			A.id=D.id  and D.xtype=‘U‘ and  D.name<>‘dtproperties‘
		LEFT JOIN 
			sys.extended_properties   g   
		ON   a.id=g.major_id   AND a.colid=g.minor_id    WHERE  A.name= ‘IsUser‘
		ORDER BY D.name ;
	OPEN cursorClearUserData
	DECLARE @tableName NVARCHAR(100);
	FETCH NEXT FROM cursorClearUserData INTO @tableName
	WHILE @@FETCH_STATUS = 0 
	BEGIN
		SET @sql =  ‘update ‘ + @tableName + ‘ set IsUser= 0 where Pro_PrVeId=‘+ ‘‘‘‘+CAST(@verId AS NVARCHAR(36)) + ‘‘‘‘+‘;‘
		print @tableName
		FETCH NEXT FROM cursorClearUserData INTO @tableName
	END

	CLOSE cursorClearUserData
	DEALLOCATE cursorClearUserData
	SET NOCOUNT OFF;
END