在我们的项目中，我们使用 bcp 命令导出大约数百万行并将输出记录到输出文件中。
对于 bcp 导入，我可以控制 bcp 的输出使用 -b 命令指定编号的开关。要批量导入的行数。输出是这样的:
Starting copy...
1000 rows sent to SQL Server. Total sent: 1000
1000 rows sent to SQL Server. Total sent: 2000
1000 rows sent to SQL Server. Total sent: 3000
1000 rows sent to SQL Server. Total sent: 4000
1000 rows sent to SQL Server. Total sent: 5000
1000 rows sent to SQL Server. Total sent: 6000
1000 rows sent to SQL Server. Total sent: 7000
1000 rows sent to SQL Server. Total sent: 8000
1000 rows sent to SQL Server. Total sent: 9000
1000 rows sent to SQL Server. Total sent: 10000
1000 rows sent to SQL Server. Total sent: 11000
1000 rows sent to SQL Server. Total sent: 12000
SQLState = 22001, NativeError = 0
通过增加发送的数量可以很容易地减少
-b转变 :Starting copy...
10000 rows sent to SQL Server. Total sent: 10000
SQLState = 22001, NativeError = 0
12406 rows copied.
Network packet size (bytes): 4096
Clock Time (ms.) Total : 75 Average : (165413.3 rows per sec.)
但是对于 bcp 导出，我无法控制输出，并且对于一百万行，日志变得太大，例如。下面的命令
bcp Temp.dbo.TestTable out outdata.txt -t , -f file.fmt -S Server -U user-P password -m 10
输出这个:
Starting copy...
1000 rows successfully bulk-copied to host-file. Total received: 1000
SQLState = S1000, NativeError = 0
Error = [Microsoft][ODBC Driver 11 for SQL Server]Warning: BCP import with a format file will convert empty strings in delimited columns to NULL.
1000 rows successfully bulk-copied to host-file. Total received: 2000
1000 rows successfully bulk-copied to host-file. Total received: 3000
1000 rows successfully bulk-copied to host-file. Total received: 4000
1000 rows successfully bulk-copied to host-file. Total received: 5000
1000 rows successfully bulk-copied to host-file. Total received: 6000
1000 rows successfully bulk-copied to host-file. Total received: 7000
1000 rows successfully bulk-copied to host-file. Total received: 8000
1000 rows successfully bulk-copied to host-file. Total received: 9000
1000 rows successfully bulk-copied to host-file. Total received: 10000
1000 rows successfully bulk-copied to host-file. Total received: 11000
1000 rows successfully bulk-copied to host-file. Total received: 12000
1000 rows successfully bulk-copied to host-file. Total received: 13000
1000 rows successfully bulk-copied to host-file. Total received: 14000
1000 rows successfully bulk-copied to host-file. Total received: 15000
1000 rows successfully bulk-copied to host-file. Total received: 16000
1000 rows successfully bulk-copied to host-file. Total received: 17000
1000 rows successfully bulk-copied to host-file. Total received: 18000
1000 rows successfully bulk-copied to host-file. Total received: 19000
1000 rows successfully bulk-copied to host-file. Total received: 20000
1000 rows successfully bulk-copied to host-file. Total received: 21000
1000 rows successfully bulk-copied to host-file. Total received: 22000
我试过通过
-b与 bcp out 切换但它总是以 1000 为一组导出它们并通过 greping 过滤行或 seding他们将花费太多时间。谢谢你的帮助。
最佳答案
在 bcp 中似乎没有解决方案。但是，有一种解决方法；将 bcp 命令行打包到 xp_cmdshell 语句中并指定 no_output 选项:
EXEC xp_cmdshell "bcp Temp.dbo.TestTable out outdata.txt -t , -f file.fmt -S Server -U user-P password -m 10", no_output
来源:click here
关于sql-server-2008 - 减少 bcp export 的输出，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/19447085/