18 Nov 2015

Changing relationships in SQL

The following changes the relationships between worldpress posts and their category, although it can be modified for other uses.

the example changes posts in category ID #10 and places them in category ID #20

UPDATE wp_term_relationships 
SET term_taxonomy_id = 
   (SELECT term_taxonomy_id FROM wp_term_taxonomy WHERE term_id =10)WHERE term_taxonomy_id =
   (SELECT term_taxonomy_id FROM wp_term_taxonomy WHERE term_id =20)
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