https://github.com/chatopera/cskefu/issues/722 enable createtime column for cs_stream_file table

contact-center/config/sql/cosinee-MySQL-slim.sql

@@ -397,6 +397,7 @@ CREATE TABLE `cs_stream_file` (
   `thumbnail` mediumblob COMMENT '缩略图',
   `mime` varchar(200) DEFAULT NULL COMMENT '文件类型 Content Type',
   `cooperation` mediumblob COMMENT '协作文件',
+  `createtime` datetime DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 ROW_FORMAT=COMPACT COMMENT='文件';
 /*!40101 SET character_set_client = @saved_cs_client */;

contact-center/config/sql/upgrade/011.alter_cs_stream_file.sql

@@ -0,0 +1,32 @@
+USE `cosinee`;
+-- -----------------
+-- prepare variables
+-- -----------------
+
+SET @dbname = DATABASE ( );
+SET @tablename = "cs_stream_file";
+SET @columnname = "createtime";
+
+SET @preparedStatement = (
+	SELECT
+	IF
+		(
+			(
+			SELECT
+				COUNT( * ) 
+			FROM
+				INFORMATION_SCHEMA.COLUMNS 
+			WHERE
+				( table_name = @tablename ) 
+				AND ( table_schema = @dbname ) 
+				AND ( column_name = @columnname ) 
+			) > 0,
+			"SELECT 1",
+			CONCAT( "ALTER TABLE ", @tablename, " ADD ", @columnname, " datetime DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间';" ) 
+	)
+);
+PREPARE alterIfNotExists 
+FROM
+	@preparedStatement;
+EXECUTE alterIfNotExists;
+DEALLOCATE PREPARE alterIfNotExists;