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Bulk Insert Fixed Length Text File
Variable Length
Bulk Insert Fixed Length Text File Size

APPLIES TO: SQL Server Azure SQL Database Azure SQL Data Warehouse Parallel Data Warehouse

Bulk insert fixed length file with ragged right lines. Ask Question 0. I have a fixed length text file, except some of the lines end early, with a carriage return/line feed. I'm using a.fmt file. I just wrote a pre-processor to condition the text file before doing the bulk insert. – Phillip Senn Dec 13 '12 at 19:59. Dec 30, 2008 BULK INSERT, fixed length file and KEEPNULLS. SQL Server > SQL Server Database Engine. Text/html 1:31:30 AM Frank69 0. Sign in to vote. BULK INSERT in SQL server 2008 does not keep nulls when inserting fixed length file with blank fields. Any idea why? How To Bulk Insert A File With Fixed Row Length And No Row Terminator? Jul 16, 2004. Hi All, I have a file that has fixed row size of 148 and fixed column size, but the file has no end of line character. I know it is wierd but a client has made the file and refuses to change the format. So I am stuck with reading it the way it is. Bulk Insert - Fixed Width File. I'm confused as to which would be the best method for my situation: reading a text file that contains about 7000 fixed-length records and then inserting those records into a table. Iam trying to do the exact same thing. If you have found the solution and if you can share with me your text.

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For character data fields, optional terminating characters allow you to mark the end of each field in a data file with a field terminator and the end of each row with a row terminator. Terminating characters are one way to indicate to programs that read the data file where one field or row ends and another field or row begins.

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When you use native or Unicode native format, use length prefixes rather than field terminators. Native format data can conflict with terminators because a native-format data file is stored in the MicrosoftSQL Server internal binary data format.

Characters Supported As Terminators

The bcp command, BULK INSERT statement, and the OPENROWSET bulk rowset provider support a variety of characters as field or row terminators and always look for the first instance of each terminator. The following table lists the supported characters for terminators.

Terminating character	Indicated by
Tab	t This is the default field terminator.
Newline character	n This is the default row terminator.
Carriage return/line feed	r
Backslash*	\|
Null terminator (nonvisible terminator)**	0
Any printable character (control characters are not printable, except null, tab, newline, and carriage return)	(*, A, t, l, and so on)
String of up to 10 printable characters, including some or all of the terminators listed earlier	(t, end, !!!!!!!!!!, t-n, and so on)

*Only the t, n, r, 0 and '0' characters work with the backslash escape character to produce a control character.

**Even though the null control character (0) is not visible when printed, it is a distinct character in the data file. This means that using the null control character as a field or row terminator is different than having no field or row terminator at all.

Important

If a terminator character occurs within the data, it is interpreted as a terminator, not as data, and the data after that character is interpreted as belonging to the next field or record. Therefore, choose your terminators carefully to make sure that they never appear in your data. For example, a low surrogate field terminator would not be a good choice for a field terminator if the data contains that low surrogate.

Using Row Terminators

The row terminator can be the same character as the terminator for the last field. Generally, however, a distinct row terminator is useful. For example, to produce tabular output, terminate the last field in each row with the newline character (n) and all other fields with the tab character (t). To place each data record on its own line in the data file, specify the combination rn as the row terminator.

Note

When you use bcp interactively and specify n (newline) as the row terminator, bcp automatically prefixes it with a r (carriage return) character, which results in a row terminator of rn.

Specifying Terminators for Bulk Export

When you bulk export char or nchar data, and want to use a non-default terminator, you must specify the terminator to the bcp command. You can specify terminators in any of the following ways:

With a format file that specifies the terminator on a field-by-field basis.
Note
For information about how to use format files, see Format Files for Importing or Exporting Data (SQL Server).
Without a format file, the following alternatives exist:
- Using the -t switch to specify the field terminator for all the fields except the last field in the row and using the -r switch to specify a row terminator.
- Using a character-format switch (-c or -w) without the -t switch, which sets the field terminator to the tab character, t. This is the same as specifying -tt.
  Note
  If you specify the -n (native data) or -N (Unicode native) switch, terminators are not inserted.
- If an interactive bcp command contains the in or out option without either the format file switch (-f) or a For an example that shows this prompt in context, see Specify Data Formats for Compatibility when Using bcp (SQL Server).
  Note
  After you interactively specify all of the fields in a bcp command, the command prompts you save your responses for each field in a non-XML format file. For more information about non-XML format files, see Non-XML Format Files (SQL Server).

Guidelines for Using Terminators

In some situations, a terminator is useful for a char or nchar data field. For example:

For a data column that contains a null value in a data file that will be imported into a program that does not understand the prefix length information.
Any data column that contains a null value is considered variable length. In the absence of prefix lengths, a terminator is necessary to identify the end of a null field, making sure that the data is correctly interpreted.
For a long fixed-length column whose space is only partially used by many rows.
In this situation, specifying a terminator can minimize storage space allowing the field to be treated as a variable-length field.

Specifying `n` as a Row Terminator for Bulk Export

When you specify n as a row terminator for bulk export, or implicitly use the default row terminator, bcp outputs a carriage return-line feed combination (CRLF) as the row terminator. If you want to output a line feed character only (LF) as the row terminator - as is typical on Unix a

Characters Supported As Terminators

Using Row Terminators

Specifying Terminators for Bulk Export

Guidelines for Using Terminators

Specifying n as a Row Terminator for Bulk Export

Specifying `n` as a Row Terminator for Bulk Export

Bulk Insert Fixed Length Text File