```

```
use database;
set names utf8;



-- 删除客户表子表中的重复数据
DELIMITER //
drop procedure if exists delFieldPro// 
CREATE PROCEDURE delFieldPro()  
BEGIN  
    DECLARE tableName varchar(100) default '';   
    DECLARE done INT DEFAULT 0;  
    DECLARE taskCursor CURSOR FOR select table_name from information_schema.tables where table_schema='uc_ipcc_cloud_ai' and table_name like  'tb_customer_%' and table_name not like  'tb_customer_contact%' ;  
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;  
    OPEN taskCursor;  
    REPEAT  
      FETCH taskCursor INTO tableName;  
      IF not done THEN  
	 
	 set @sql0=concat('delete from tb_tmp;') ;
	 PREPARE stmt0 from @sql0; 
         execute stmt0;

         set @sql=concat('insert into tb_tmp select t.id from ( select max(id) id,customer_nbr,count(1) cu from ',tableName,'  group by customer_nbr having cu>1) t') ;
	 PREPARE stmt from @sql; 
         execute stmt;


         set @sql1=concat('delete from ',tableName,'  where id in (select id from tb_tmp)');
         PREPARE stmt1 from @sql1; 
         execute stmt1;
      END IF;  
    UNTIL done END REPEAT;  
    CLOSE taskCursor;
END 
//
DELIMITER ;
CALL delFieldPro();




-- 给客户子表添加唯一索引
DELIMITER //
drop procedure if exists addUniqueIndexPro// 
CREATE PROCEDURE addUniqueIndexPro()  
BEGIN  
    DECLARE tableName varchar(100) default '';   
    DECLARE done INT DEFAULT 0;  
    DECLARE taskCursor CURSOR FOR select table_name from information_schema.tables where table_schema='database' and table_name like  'tb_customer_%' and table_name not like  'tb_ucpaas_customer_contact%' ;  
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;  
    OPEN taskCursor;  
    REPEAT  
      FETCH taskCursor INTO tableName;  
      IF not done THEN  
	 
	 set @sql0=concat('ALTER TABLE  ',tableName,' ADD unique(customer_nbr);') ;
	 PREPARE stmt0 from @sql0; 
         execute stmt0;      
      END IF;  
    UNTIL done END REPEAT;  
    CLOSE taskCursor;
END 
//
DELIMITER ;
CALL addUniqueIndexPro();



-- 找出客户表中含有重复号码的表
DELIMITER //
drop procedure if exists proc_find_repeatNum;
create procedure proc_find_repeatNum (out sum varchar(1000))
BEGIN
    DECLARE tableName varchar(100) default '';   
    DECLARE done INT DEFAULT 0; 
    DECLARE _num int DEFAULT 0;
    DECLARE taskCursor CURSOR FOR select table_name from information_schema.tables where table_schema='database' and table_name like  'tb_customer_%' and table_name not like  'tb_ucpaas_customer_contact%' ;  
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;  
    OPEN taskCursor;  
    REPEAT  
      FETCH taskCursor INTO tableName;  
      IF not done THEN  
         set @x ='';
	 set @sql0=concat('select count(1) into @tnum from  (select customer_nbr,count(1) cu from ',tableName,' group by customer_nbr having cu>1) t;') ;
	 PREPARE stmt0 from @sql0; 
         execute stmt0;  
	 deallocate prepare stmt0;
	 SET _num = @tnum;
	 if(_num > 0)
	  then  SET sum= concat(tableName,',');
		
	 END IF;
      END IF;  
    UNTIL done END REPEAT;  
    CLOSE taskCursor;
end
//
DELIMITER ;
call proc_find_repeatNum(@sum);
-- 查询结果集
select @sum;


---删除某张表的重复数据
select count(1) from  (select customer_nbr,count(1) cu from tb_customer_ddd92456d085c9dd4976b59c90e48de6 group by customer_nbr having cu>1) t;
delete from tb_tmp;
insert into tb_tmp select t.id from ( select max(id) id,customer_nbr,count(1) cu from tb_customer_ddd92456d085c9dd4976b59c90e48de6  group by customer_nbr having cu>1) t ;
delete from tb_customer_ddd92456d085c9dd4976b59c90e48de6 where id in (select id from tb_tmp);

```

```

-- 删除多余索引
DELIMITER //
drop procedure if exists delUniqueIndexPro// 
CREATE PROCEDURE delUniqueIndexPro()  
BEGIN  
    DECLARE tableName varchar(100) default '';   
    DECLARE done INT DEFAULT 0;  
    DECLARE taskCursor CURSOR FOR select table_name from information_schema.tables where table_schema='uc_ipcc_cloud_ai' and table_name like  'tb_ucpaas_customer_%' and table_name not like  'tb_ucpaas_customer_contact%' ;  
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;  
    OPEN taskCursor;  
    REPEAT  
      FETCH taskCursor INTO tableName;  
      IF not done THEN  
	 
		 IF EXISTS (SELECT * FROM information_schema.statistics WHERE table_schema='uc_ipcc_cloud_ai' AND table_name = tableName AND index_name = 'customer_nbr_2') THEN
			 set @sql0=concat('ALTER TABLE  ',tableName,' drop index customer_nbr_2 ;') ;
			 PREPARE stmt0 from @sql0; 
			 execute stmt0; 
		 END IF;
		 
		 IF EXISTS (SELECT * FROM information_schema.statistics WHERE table_schema='uc_ipcc_cloud_ai' AND table_name = tableName AND index_name = 'customer_nbr_3') THEN
			 set @sql0=concat('ALTER TABLE  ',tableName,' drop index customer_nbr_3;') ;
			 PREPARE stmt0 from @sql0; 
			 execute stmt0; 
		 END IF;

		 IF EXISTS (SELECT * FROM information_schema.statistics WHERE table_schema='uc_ipcc_cloud_ai' AND table_name = tableName AND index_name = 'customer_nbr_4') THEN
			 set @sql0=concat('ALTER TABLE  ',tableName,' drop index customer_nbr_4;') ;
			 PREPARE stmt0 from @sql0; 
			 execute stmt0; 
		 END IF;


		 IF EXISTS (SELECT * FROM information_schema.statistics WHERE table_schema='uc_ipcc_cloud_ai' AND table_name = tableName AND index_name = 'idx_customer_nbr') THEN
			 set @sql0=concat('ALTER TABLE  ',tableName,' drop index idx_customer_nbr;') ;
			 PREPARE stmt0 from @sql0; 
			 execute stmt0; 
		 END IF;  
    END IF;
    UNTIL done END REPEAT;  
    CLOSE taskCursor;
END 
//
DELIMITER ;
CALL delUniqueIndexPro();