更新代码

go/docs/sql/alter_crm_unit_default.sql

@@ -10,8 +10,11 @@
 --      (re-running only reports "Duplicate column name", which is safe)
 -- =============================================================
 
-ALTER TABLE `yz_backend_crm_unit`
-  ADD COLUMN `is_default` TINYINT NOT NULL DEFAULT 0 COMMENT '1=system default unit (read-only), 0=tenant custom' AFTER `status`;
+-- 可重复执行：列不存在时才执行 ALTER，已存在自动跳过（不再报 1060 Duplicate column）。
+SET @tbl := (SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'yz_backend_crm_unit');
+SET @col := (SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'yz_backend_crm_unit' AND COLUMN_NAME = 'is_default');
+SET @ddl := IF(@tbl > 0 AND @col = 0, 'ALTER TABLE `yz_backend_crm_unit` ADD COLUMN `is_default` TINYINT NOT NULL DEFAULT 0 COMMENT ''1=system default unit (read-only), 0=tenant custom'' AFTER `status`', 'DO 0');
+PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;
 
 -- Mark seeded default units (same list as backend crmDefaultUnits)
 UPDATE `yz_backend_crm_unit`