批量更新功能

go/docs/sql/alter_project_contacts.sql

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+-- =============================================================
+-- 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`;