增加数据库脚本

数据库/2.7.4/更新-mysql-2.7.4.sql

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+/*
+* 20250519
+*/
+DELIMITER //  -- 重定义分隔符避免分号冲突
+CREATE PROCEDURE `wvp_20250519`()
+BEGIN
+    IF NOT EXISTS (SELECT column_name FROM information_schema.columns
+                   WHERE TABLE_SCHEMA = (SELECT DATABASE()) and  table_name = 'wvp_device' and column_name = 'device_type')
+    THEN
+        ALTER TABLE wvp_device ADD device_type  integer;
+    END IF;
+END; //
+call wvp_20250519();
+DROP PROCEDURE wvp_20250519;
+DELIMITER ;
+
+
+