Move columns to another table ?

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Hi,

This is my TableA columns

user_id
active_date <---move this to TableB
name
address
gender

This is my TableB columns

num_id
user_id
gen_sub_id

I need help. how to move/copy active_date columns to TableB based on user_id?

What I have tried:

i'm using JOIN table and its work. but i want active_date move to TableB

this my mysql

SELECT TableA.user_id, TableA.active_date, TableB.gen_sub_id FROM `TableA` JOIN `TableB` WHERE TableA.user_id = TableB.user_id

Posted 21-Jan-17 9:41am

JaironLanda

Updated 22-Jan-17 0:41am

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Afzaal Ahmad Zeeshan 21-Jan-17 16:14pm

To move a column permanently to another table requires to either alter that table, or drop the table and rebuild it.

You can try simple one, alter table in MySQL.

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Gopal Rakhal · Answer 1 · 2017-01-22T00:41:00

Solution 1

I assume you have rows in your both tables

SQL

alter table Table_2 
Add  active_date datetime


UPDATE B    
  SET B.active_date = A.active_date   
from Table_2 B
  INNER JOIN Table_1 A
    ON A.user_id = B.user_id

Lastly, you can drop active_date column from Table_1

Posted 22-Jan-17 0:41am

Gopal Rakhal