I tried upgrading an instance of EE from 2.5.2 to 2.7.0 and it failed with the following database error. Please help. The links to your wiki on troubleshooting upgrade issues does not work anymore. Lately every time I upgrade EE it fails with some sort of DB error.
A Database Error Occurred
Error Number: 1064
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE Key_name = 'field_id'' at line 1
SHOW INDEX FROM exp_relationships WHERE Key_name = 'field_id'
Filename: /home/vg001web00/81/72/2927281/web/core/expressionengine/libraries/Smartforge.php
Line Number: 339