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After merging - how to bring over parent_ids

I have a table A with the following columns:

A.id
A.parent_id
A.z_id
A.z_parent_id
A.schema

The values of A.parent_id are currently null and require assigning.

The values in the columns z_id and z_parent_id come from an identical
table migrated from another database.

With your tip we will update the value of parent_id to the value
associated with a row in the current table that corresponds to the
parent id in the old table z.
Example:

id 4923 cooresponds to z_id 852

id 4343
parent_id (statement needed to assign this value 852)
z_parent_id 4923
Thanks.

Jul 18 '07 #1
0 1124

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