私たちのプロジェクトでは、bcp コマンドを使用して約 100 万行をエクスポートし、出力を出力ファイルに記録しています。bcp インポートの場合、no を指定するスイッチをbcp使用してコマンドの出力を制御できます。-bバッチでインポートされる行数。次のような出力：
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
switchで送信される数を増やすことで簡単に減らすことができます-b:
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.)
しかし、bcp エクスポートの場合、出力を制御できず、100 万行の場合、ログが大きくなりすぎます。以下のコマンド
bcp Temp.dbo.TestTable out outdata.txt -t , -f file.fmt -S Server -U user-P password -m 10
これを出力します：
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
-bスイッチを渡そうとしましbcp outたが、常に1000のバッチでエクスポートし、行をフィルタリングするgrepingかseding、時間がかかりすぎます。ご協力いただきありがとうございます。