Since, i update from 7.2 to 7.4 (through 7.3.2 but no test in the mean time), some query using custom field randomly fail.
For example i see a lot of this in my debug log :
Thu Nov 5 13:09:27 2015 [20977][386b3bf7-92d1-54a5-680c-5579135c8c1d][FATAL] Error retrieving MA_AnomyzedEmail list: Query Failed: SELECT ma_anomyzedemail.id , ma_anomyzedemail.name , ma_anomyzedemail.anomized_email_c , ma_anomyzedemail.assigned_user_id FROM ma_anomyzedemail where (name = "xxxxx@vvvvv.com") AND ma_anomyzedemail.deleted=0 LIMIT 0,10: MySQL error 1054: Unknown column ‘ma_anomyzedemail.anomized_email_c’ in ‘field list’
Thu Nov 5 13:06:09 2015 [17899][eee98276-0677-b6ad-2697-5590d263c154][FATAL] Error inserting into table: opportunities: Query Failed: INSERT INTO opportunities (id,name,date_entered,date_modified,modified_user_id,created_by,description,deleted,assigned_user_id,campaign_id,lead_source,amount,amount_usdollar,currency_id,date_closed,sales_stage,probability,pax_traveling_c,travel_description_c,previous_travels_c,interest_vehicle_c,date_of_tour_end_c,date_of_tour_start_c,hotness_scale_c,escort_guide_c,interest_travel_name_c)
VALUES (‘54fa02bc-eb3f-5706-ebd2-563b4622276b’,‘Legendre moto USA’,‘2015-11-05 12:06:09’,‘2015-11-05 12:06:08’,‘eee98276-0677-b6ad-2697-5590d263c154’,‘eee98276-0677-b6ad-2697-5590d263c154’,’’,0,‘ef9ca017-71a6-ff79-4050-55c47a50b244’,‘aa7c1c6c-0e04-62e3-a509-547c1ea7d5d5’,‘Web Site’,4400,4400,’-99’,‘2015-12-17’,‘Needs Analysis’,10,‘1’,’’,’’,‘moto’,’’,’’,‘5’,‘not_provided’,‘yyyY’): MySQL error 1054: Unknown column ‘pax_traveling_c’ in ‘field list’
Of course fields exist in CRM and in the corresponding table in mysql, i checked.
It happen like 50% of the time on those select and insert.