Session.Remove(“ImportExcel”);是把Session中的ImportExcel移除。避免残留以前的数据。因为FileExtension是字符串,所以用string类型。“string fileExtension = Path.GetExtension(file.FileName);”一句代码的意思是fileExtension获取文件的名称。Path是包含文件或目录路径信息的string类型实例执行操作。这些操作要提供跨越平台...
-- remove the first and last [ and ] char SET v_histogram = SUBSTRING(v_HISTOGRAM,2,LENGTH(v_HISTOGRAM)-2); DROP TABLE IF EXISTS t_buckets ; CREATE TEMPORARY TABLE t_buckets ( id INT AUTO_INCREMENT PRIMARY KEY, buckets_content VARCHAR(500) ); -- split by "]," and get single buc...