spool

I have an ETL process that involves a stored procedure that makes heavy use of SELECT INTO statements (minimally logged and therefore faster as they generate less log traffic). Of the batch of work that takes place in one particular stored the stored procedure several of the most expensive operations are eager spools that appear to just buffer the query results and then copy them into the table just being made. The MSDN documentation on eager spools is quite sparse. Does anyone have a deeper insight into whether these are really necessary (and under what circumstances)? I have a few theories

关于SPOOL(SPOOL是SQLPLUS的命令，不是SQL语法里面的东西。) 对于SPOOL数据的SQL，最好要自己定义格式，以方便程序直接导入,SQL语句如： T_port表中：select t.dslamip||'|'||t.dslamno from t_port t where t.dslamip='200.224.49.5'; spool常用的设置 set colsep '|';　　　 //域输出分隔符: 最好在SQL中自己指定。 set echo off;　　　　//显示start启动的脚本中的每个sql命令，缺省为on set feedback off;　　//回显本次sql命令处理的记录条数，缺省为on set heading off;　　 //输出域标题，缺省为on set pagesize 0;　　　//输出每页行数，缺省为24,为了避免分页，可设定为0。 set termout off;　　 //显示脚本中的命令的执行结果，缺省为on set trimout on;　　　//去除标准输出每行的拖尾空格，缺省为off set trimspool on;　　//去除重定向（spool）输出每行的拖尾空格，缺省为off set linesize 2500; //设定每行的size 注：LINESIZE要稍微设置大些，免得数据被截断

Is there a way to reprint a spool file? I can't find any example or article to say if there is a way or not. edit: when i say reprint it, i mean to the same printer Yes you can. Read the complete SPL file into a byte array and have a look at this article: http://support.microsoft.com/kb/322090/en-us It shows you how to send raw data to a printer. Use that to send your byte array to the printer. Beware: a SPL file can actually contain various data types, such as EMF, PCL, ESC-P etc. Your must make sure that the format of the SPL file you have is appropriate for your specific printer. For EMF I

I'm doing the following spooling statement: SET VERIFY OFF SET FEEDBACK OFF SET HEADING OFF SET TRIMSPOOL ON SET TERM OFF SPOOL &pathRelations START scripts/relations.sql &parent SPOOL OFF SET TERM ON The scripts/relations.sql file contains a simple select statement. Unfortunately, the spooled file contains an empty line as the first one in the file. This line causes trouble in our framework. Of course I could get rid of these line through sed but ain't there a way to suppress its creation in the first place? Tagar SET NEWPAGE NONE is the correct answer. SET NEWPAGE 0 will cause a page feed,