[development] D6 Content Migration to another D6 Installation

[As If Productions]

At 02:15 PM 8/11/2010, Phil Glanville wrote:
>would it (in theory) be possible to copy just 'node' or content 
>specific db tables without causing serious problems?

Not only in theory, but in practice!  I would never depend on a 
module to do this for me, and I do a lot of migrations.  If the two 
sites are literally identical (content types, fields, taxonomy), you 
can just directly copy the old tables to the new database.  The node 
and node_revisions tables are particularly safe in this regard.  CCK 
stuff requires more finesse.  In complex cases, a few simple PHP 
scripts can connect to both databases and directly query the specific 
tables you wish to address.  These scripts can also handle any data 
manipulation that needs to occur in order to make the old schema data 
fit the new schema (if/when there are any differences between 
them).  Basically you write scripts that SELECT data from the old DB 
and manipulate them one row at a time into an INSERT query on the 
other DB.  The only prerequisite is that you need to be intimately 
familiar with the DB schemas, and how various Drupal tables relate to 
each other.

Dump both DBs before starting, so you can roll back if anything goes wacky.

LVX
TF


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