-- =============================================================
-- Project contacts: pick contacts from the linked companies
-- (a project no longer shows ALL contacts of the customer)
-- Table: yz_backend_crm_project
--   1) upstream_contact_ids   : JSON array of contact IDs picked from
--                               the customer's address book (upstream).
--   2) downstream_contact_ids : JSON array of contact IDs picked from
--                               the counterpart's address book
--                               (downstream for type=2 / midstream for type=3).
-- Contact details always come from yz_backend_erp_contact in real time;
-- only the picked ID references are stored here. Empty array -> ''.
-- Run: mysql -h<host> -P<port> -u<user> -p <db> < alter_project_contacts.sql
--      (re-running only reports "Duplicate column name", which is safe)
-- NOTE: keep this file ASCII-only; piping through some shells mangles non-ASCII.
-- =============================================================

ALTER TABLE `yz_backend_crm_project`
  ADD COLUMN `upstream_contact_ids` TEXT NULL COMMENT 'picked contact IDs (JSON array) from customer address book' AFTER `downstream_phone`;

ALTER TABLE `yz_backend_crm_project`
  ADD COLUMN `downstream_contact_ids` TEXT NULL COMMENT 'picked contact IDs (JSON array) from counterpart address book (downstream/midstream)' AFTER `upstream_contact_ids`;