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9.1

MySQL query to update data from one table to another table

Asked by karunamoorthy in MySQL Server

Tags: DUPLICATE KEY UPDATE

update query is needed for MySQL

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             --
-- Creation script with sample data 
--
 
CREATE TABLE emp (
   id int(9) unsigned NOT NULL auto_increment,
   empno varchar(6) NOT NULL,
   ename varchar(30) NOT NULL,
   address varchar(30),
   mystatus varchar(2), 
   PRIMARY KEY  (id)
) DEFAULT CHARSET=utf8;
 
 
INSERT INTO emp (id , empno, ename, address ,mystatus)
VALUES (1,'123456', 'PKM', 'Address1', 'OK');
 
INSERT INTO emp (id , empno, ename, address ,mystatus)
VALUES (2,'234567', 'KSB', 'Address2', 'OK');
 
INSERT INTO emp (id , empno, ename, address ,mystatus)
VALUES (3,'345678', 'KMM', 'Address3', 'OK');
 
 
CREATE TABLE emp_temp (
   id int(9) unsigned NOT NULL auto_increment,
   empno varchar(6) NOT NULL,
   ename varchar(30) NOT NULL,
   address varchar(30),
   PRIMARY KEY  (id)
) DEFAULT CHARSET=utf8;
 
 
INSERT INTO emp_temp (id , empno, ename, address )
VALUES (1,'123456', 'PKM', 'Add1');
 
INSERT INTO emp_temp (id , empno, ename, address )
VALUES (2,'234567', 'KSB', 'Add2');
 
INSERT INTO emp_temp (id , empno, ename, address )
VALUES (3,'345678', 'KMM', 'Add3');
 
INSERT INTO emp_temp (id , empno, ename, address )
VALUES (4,'456789', 'MMG', 'Add4');
 
 
Here I have two tables emp and emp_temp. 
Now I want to update the table emp from the table data emp_temp. That is the final result in the table emp is
 
1,'123456', 'PKM', 'Add1', 'OK'
2,'234567', 'KSB', 'Add2', 'OK'
3,'345678', 'KMM', 'Add3', 'OK'
4,'456789', 'MMG', 'Add4', ''
 
My friend told me to use ON DUPLICATE KEY UPDATE statement in this case.
Please help. I am novice to MYSQL.

           
         

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MySQL query to update data from one table to another table

Asked by karunamoorthy in MySQL Server

Tags: DUPLICATE KEY UPDATE

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