//string str = $"SELECT COLUMN_NAME AS Name, COLUMN_TYPE AS Type,COLUMN_COMMENT AS COMMENT FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = '{tabname}' ORDER BY ORDINAL_POSITION;";
//string str = $"SELECT COLUMN_NAME AS Name, COLUMN_TYPE AS Type,COLUMN_COMMENT AS COMMENT FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = '{tabname}' ORDER BY ORDINAL_POSITION;";