Lesson Summary in Visual Studio .NET

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Lesson Summary
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bcp is an out-of-process command-line utility for importing or exporting data quickly to or from a file. bcp has extremely limited data-transformation and error-handling capabilities. bcp provides numerous parameters that give you substantial flexibility in using the utility. The -t, -r, and -F parameters are the most commonly used parameters for bulk importing an ASCII character file. Certain bcp hints, such as TABLOCK, must be used for minimal logging to occur.
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Lesson Review
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The following questions are intended to reinforce key information presented in this lesson. The questions are also available on the companion CD if you prefer to review them in electronic form.
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Answers
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Answers to these questions and explanations of why each answer choice is right or wrong are located in the Answers section at the end of the book.
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1. When loading data from a file that uses a comma for the field delimiter and newline for the row delimiter, and the file has a header row at the beginning, which arguments MUST you specify (Choose all that apply.) A. -T B. -t C. -r D. -F
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Lesson 3: Performing a BULK INSERT Task
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Lesson 3: Performing a BULK INSERT Task
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BULK INSERT is the in-process brother to the out-of-process bcp utility. The BULK INSERT Transact-SQL command uses many of the same switches that bcp uses, although in a less cryptic format. For example, instead of using -t to designate the column terminator, as it is in bcp, you can use FIELDTERMINATOR = , which is much easier to read and remember. In this lesson, you learn the differences between bcp and BULK INSERT, and see how to use BULK INSERT to insert data into a SQL Server table.
After this lesson, you will be able to:
Explain the differences between bcp and BULK INSERT. Explain certain situations when BULK INSERT should not be used. List certain common BULK INSERT parameters and explain their use. List the permissions necessary for a user to bulk load data into a table by using BULK INSERT. Execute a BULK INSERT command to import data into SQL Server.
Estimated lesson time: 15 minutes
Differences Between BULK INSERT and bcp
Two of the biggest differences between bcp and BULK INSERT are that BULK INSERT can only import data and it executes inside SQL Server. Whereas bcp can either import or export data, BULK INSERT (as its name implies) can only import (insert) data into a SQL Server database. Also, bcp is executed from the command line and runs outside of the SQL Server process space, meaning that all communications between bcp and SQL Server are done via InterProcess Communications (IPC). In contrast, BULK INSERT runs inside the SQL Server process space and is executed from a query window or query batch. Other than these two differences and some minor variations in security, the commands behave almost exactly the same.
NOTE
bcp vs. BULK INSERT
bcp runs out-of-process and is executed from the command line, whereas BULK INSERT runs inprocess and is executed from a query window or Transact-SQL batch.
10
Working with Flat Files
All of the caveats that apply to bcp for minimal logging for example, there can be no clustered index on a populated table and you must use the TABLOCK hint also apply to BULK INSERT. Following is the syntax for the BULK INSERT command:
BULK INSERT [ database_name . [ schema_name ] . | schema_name . ] [ table_name | view_name ] FROM 'data_file' [ WITH ( [ [ , ] BATCHSIZE = batch_size ] [ [ , ] CHECK_CONSTRAINTS ] [ [ , ] CODEPAGE = { 'ACP' | 'OEM' | 'RAW' | 'code_page' } ] [ [ , ] DATAFILETYPE = { 'char' | 'native'| 'widechar' | 'widenative' } ] [ [ , ] FIELDTERMINATOR = 'field_terminator' ] [ [ , ] FIRSTROW = first_row ] [ [ , ] FIRE_TRIGGERS ] [ [ , ] FORMATFILE = 'format_file_path' ] [ [ , ] KEEPIDENTITY ] [ [ , ] KEEPNULLS ] [ [ , ] KILOBYTES_PER_BATCH = kilobytes_per_batch ] [ [ , ] LASTROW = last_row ] [ [ , ] MAXERRORS = max_errors ] [ [ , ] ORDER ( { column [ ASC | DESC ] } [ ,...n ] ) ] [ [ , ] ROWS_PER_BATCH = rows_per_batch ] [ [ , ] ROWTERMINATOR = 'row_terminator' ] [ [ , ] TABLOCK ] [ [ , ] ERRORFILE = 'file_name' ] )]
The BULK INSERT command uses nearly all the same parameters as bcp, but in a less cryptic fashion. Additionally, you can use any format files you create for bcp with BULK INSERT. And any files you extract from a SQL Server database by using bcp, including those you extract in native formats, you can load into a SQL Server database by using BULK INSERT.
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