应付账单初始化

bms-back/sql/price/pay_surcharge_calc.sql

@@ -0,0 +1,17 @@
+-- 附加费增加可计算条件。已有库可重复执行。
+SET NAMES utf8mb4;
+
+SET @sql = (
+  SELECT IF(
+    COUNT(*) = 0,
+    'ALTER TABLE pay_surcharge
+       ADD COLUMN calc_rule varchar(20) NOT NULL DEFAULT ''MANUAL'' COMMENT ''计费条件：ALWAYS每票、POSTCODE邮编、WEIGHT超重、SIZE超尺寸、RETURN退件、MANUAL人工'' AFTER charge_timing,
+       ADD COLUMN calc_param varchar(1000) DEFAULT NULL COMMENT ''条件参数，如邮编、重量阈值、尺寸表达式'' AFTER calc_rule',
+    'SELECT 1'
+  )
+  FROM information_schema.COLUMNS
+  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'pay_surcharge' AND COLUMN_NAME = 'calc_rule'
+);
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;