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phpmysqldatabase-migration

data migration query


I have searched many questions and ready many different articles about this but no one seems to help me out or may be I could not able to understand completely. I want to migrate data from one database to another database.
This is my query

$query = mysql_query("
    Insert into database2.table2 (id, data)
    select (id, name) from database1.table1
");
if($query == false){   
    die(mysql_error());   
}

When I execute this query it shows me this error message which is really annoying Operand should contain 1 column(s)

I searched about it but found nothing which could help me.

Note: This query is initally for my test case. Actual query will be made later.


Solution

  • Try this query (Removing parenthesis from select fields),

    INSERT into database2.table2 (id, data) SELECT id, name from database1.table1
    

    Note: Please, don't use mysql_* functions in new code. They are no longer maintained and are officially deprecated. See the red box? Learn about prepared statements instead, and use PDO, or MySQLi - this article will help you decide which. If you choose PDO, here is a good tutorial.