Year can have two or four digits. For simplicity, the table uses only the ' - ' separator. To specify the month as text, use three or more characters.
Months with one or two characters are interpreted as a number. The letters 'tt' designate [AM PM am pm]. AM is the default. When 'tt' is specified, the hour value hh must be in the range of 0 to Specifies how to handle missing values in delimited text files when PolyBase retrieves data from the text file.
TRUE When retrieving data from the text file, store each missing value by using the default value for the data type of the corresponding column in the external table definition. For example, replace a missing value with:. Decimal columns are not supported and will error. When the data is stored in one of the compressed formats, PolyBase first decompresses the data before returning the data records.
The row delimiter in delimited-text files must be supported by Hadoop's LineRecordReader. These delimiters are not user-configurable. The combinations of supported SerDe methods with RCFiles, and the supported data compression methods are listed previously in this article.
Not all combinations are supported. The maximum number of concurrent PolyBase queries is When 32 concurrent queries are running, each query can read a maximum of 33, files from the external file location. The root folder and each subfolder also count as a file. If the degree of concurrency is less than 32, the external file location can contain more than 33, files. Because of the limitation on number of files in the external table, we recommend storing less than 30, files in the root and subfolders of the external file location.
Also, we recommend keeping the number of subfolders under the root directory to a small number. When too many files are referenced, a Java Virtual Machine out-of-memory exception might occur.
Using compressed files always comes with the tradeoff between transferring less data between the external data source and SQL Server while increasing the CPU usage to compress and decompress the data. Gzip compressed text files are not splittable.
To improve performance for Gzip compressed text files, we recommend generating multiple files that are all stored in the same directory within the external data source.
This file structure allows PolyBase to read and decompress the data faster by using multiple reader and decompression processes. The ideal number of compressed files is the maximum number of data reader processes per compute node. See Azure Synapse Analytics loading patterns and strategies for details.
BAT file on your web server. Then you can execute this. You can also utilise BAT file agrguments if you want to pass different query.
Remeber that any. Sign in. United States English. Ask a question. Quick access. Search related threads. Remove From My Forums. Answered by:. Archived Forums. Getting started with SQL Server. Beginners just getting started - here's the place for help with simple questions.
For installation or setup questions, refer to the Setup Forum. Sign in to vote. How can I divert the output of a SQL query to a text file? Wednesday, July 21, AM. Monday, July 26, AM. If -b is specified together with this option, sqlcmd exits on error. Enclose the value in quotation marks if the value contains spaces. If there are errors in any of the values specified, sqlcmd generates an error message and then exits.
Formatting Options -h headers Specifies the number of rows to print between the column headings. The default is to print headings one time for each set of query results. Use -1 to specify that headers not be printed. Any value that is not valid causes sqlcmd to generate an error message and then exit. This parameter preserves column formatting when data is returned.
If 1 is specified, the control characters are replaced by a single space. If 2 is specified, consecutive control characters are replaced by a single space. The default is a blank space. The column separator can be any 8-bit character. The column width must be a number greater than 8 and less than If the specified column width does not fall into that range, sqlcmd generates an error message.
The default width is 80 characters. When an output line exceeds the specified column width, it wraps on to the next line. Use this option together with the -s option when preparing data that is to be exported to another application. Cannot be used with the -y or -Y options. The default is It limits the number of characters that are returned for the large variable length data types:.
UDTs can be of fixed length depending on the implementation. Use the -y 0 option with extreme caution because it may cause serious performance issues on both the server and the network, depending on the size of data returned.
The default is 0 unlimited. Limits the number of characters that are returned for the following data types:. If the -V option has been set in addition to -b , sqlcmd will not report an error if the severity level is lower than the values set using -V. Messages that have a severity level greater than or equal to this level are sent. When this value is set to -1 , all messages including informational messages, are sent.
Spaces are not allowed between the -m and For example, -m-1 is valid, and -m -1 is not. This variable has a default of 0. Values that are less than 0 are reported as 0.
A larger packet size can enhance performance for execution of scripts that have lots of SQL statements between GO commands. You can request a larger packet size. However, if the request is denied, sqlcmd uses the server default for packet size. When you reset the batch terminator, do not use Transact-SQL reserved keywords or characters that have special meaning to the operating system, even if they are preceded by a backslash.
This parameter cannot be used in combination with other parameters. The maximum number of server computers that can be listed is If the server list is truncated because of the size of the buffer a warning message is displayed.
Because of the nature of broadcasting on networks, sqlcmd may not receive a timely response from all servers. Therefore, the list of servers returned may vary for each invocation of this option. If the optional parameter c is specified, the output appears without the Servers: header line, and each server line is listed without leading spaces. This presentation is referred to as clean output. Clean output improves the processing performance of scripting languages. The following display is an example of the format for performance statistics:.
If the optional parameter 1 is specified, the output format of the statistics is in colon-separated format that can be imported easily into a spreadsheet or processed by a script. If the optional parameter is any value other than 1 , an error is generated and sqlcmd exits. The disabled commands are still recognized; sqlcmd issues a warning message and continues.
If the optional parameter 1 is specified, sqlcmd generates an error message and then exits. The following commands are disabled when the -X option is used:. If the -X option is specified, it prevents environment variables from being passed on to sqlcmd. For more information about sqlcmd scripting variables, see Use sqlcmd with Scripting Variables.
Displays the version of sqlcmd and a syntax summary of sqlcmd options. When multiple results are returned, sqlcmd prints a blank line between each result set in a batch. To use sqlcmd interactively, type sqlcmd at the command prompt with any one or more of the options described earlier in this article. For more information, see Use the sqlcmd Utility.
The options -L , -Q , -Z or -i cause sqlcmd to exit after execution. The total length of the sqlcmd command-line in the command environment Cmd. To view the environmental variables, in Control Panel , open System , and then click the Advanced tab. In addition to Transact-SQL statements within sqlcmd , the following commands are also available:. To maintain backward compatibility with existing osql scripts, some of the commands will be recognized without the colon, indicated by the [ : ].
Each command must be on a separate line. A command cannot be followed by a Transact-SQL statement or another command. Commands are executed immediately. They are not put in the execution buffer as Transact-SQL statements are. Editing Commands [ : ] ED Starts the text editor. This editor can be used to edit the current Transact-SQL batch, or the last executed batch. To edit the last executed batch, the ED command must be typed immediately after the last batch has completed execution.
The default editor is 'Edit'. For example, to set the editor to Microsoft Notepad, at the command prompt, type:. Implicitly using a command-line option. The -X option prevents environment variables from being passed on to sqlcmd. If a variable defined by using :Setvar and an environment variable have the same name, the variable defined by using :Setvar takes precedence.
If the string value of the scripting variable contains blank spaces, enclose the value in quotation marks. If a value for a scripting variable is not specified, the scripting variable is dropped. Only scripting variables that are set by sqlcmd , and those that are set using the :Setvar command will be displayed.
The Error command can appear multiple times in a script. By default, error output is sent to stderr. If the file already exists, it will be truncated to zero bytes.
If the file is not available because of permissions or other reasons, the output will not be switched and will be sent to the last specified or default destination. If this has been redirected, the target to which the stream has been redirected will receive the error output. By default, output is sent to stdout.
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