MYSQL PHP: How to update a column with value in another table?

Posted on 2008-06-13
Last Modified: 2013-12-13


How do I insert value into a column based on value from another table?

For example, I want to insert the Category Name into all rows in TABLE 1, by checking their Category ID and obtaining the Category Name from TABLE 2.

[ code ] [ category id ] [ category name ]
[ 001 ] [ 50 ] [  ]
[ 002 ] [ 60 ] [  ]
[ 003 ] [ 70 ] [  ]

[ category id ] [ category name ]
[ 50 ] [ Toys ]
[ 60 ] [ Books ]
[ 70 ] [ CD ]

How do I write a mysql query or PHP script to do this?


Question by:gingera
LVL 48

Accepted Solution

hernst42 earned 250 total points
ID: 21777070
You can do it in SQL
UPDATE table1, table2 set table1.categoryname =table2.cateoryname WHERE table1.categoryid=table2.categoryid
LVL 142

Assisted Solution

by:Guy Hengel [angelIII / a3]
Guy Hengel [angelIII / a3] earned 250 total points
ID: 21777080
here we go:
UPDATE table1, table2
  SET table1.category_name = table2.category_name
 WHERE table1.caetgory_id = table2.category_id

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