( name, r 'd:\dw\tmpfilecopy', r 'd:\dw\format.fmt', fieldsep, rowsep ,) cursor. close () sql = "BULK INSERT %s FROM ' %s ' WITH (FORMATFILE = ' %s ', FIELDTERMINATOR = ' %s ', ROWTERMINATOR = ' %s ')" % \ write ( ' %d SQLC" %s " %d %s "Latin1_General_100_CI_AS_SC" \r\n ' % ( count, sep, count, a )) fmt.
write ( "12.0 \r\n %d \r\n " % len ( attributes )) count = 0 sep = " \\ t" for a in attributes : count += 1 if count = len ( attributes ): sep = " \\ n" # For information regarding the format values, # see the above link on non-XML format files. # For more information, see the above link on non-XML format files. copyfile ( filehandle, r 'd:\dw\tmpfilecopy' ) # Create format file fmt = open ( r 'd:\dw\format.fmt', 'w+' ) # 12.0 corresponds to the version of the bcp utility being used by SQL Server. This case, we create a non-XML format file.Ī simple example of bulk loading in SQL Server along with the creation of aĭef sqlserverbulkloader ( name, attributes, fieldsep, rowsep, nullval, filehandle ): global msconn cursor = msconn. Must match the table you are inserting into. using pyfile.īy default, BULK INSERT ignores column names, so the number and order of columns Placed on the file by the OS and pygrametl, prevent SQL Server from opening itĭirectly. Microsoft Windows, the file must be copied before bulk loading, as the locks If the file used for bulk loading is located on a machine running There are a number of things to be aware of when using pygrametl with SQL name )) Microsoft SQL Server ¶įor Microsoft SQL Server the BULK INSERT functionality system ( "sqlldr control=" + str ( ctl_handle. As a new connection # is created, the same username, passowrd, etc. flush () # Bulk loads the data using Oracle's SQL Loader. name, rowsep, name, fieldsep, unqouted_atts ) # Strips the multi line string of unnecessary indention, and ensures # that the contents are written to the file by flushing it ctl_contents = textwrap. replace ( "'", "" ) ctl_contents = """ LOAD DATA INFILE ' %s ' "str %r " APPEND INTO TABLE %s FIELDS TERMINATED BY %r %s """ % ( filehandle. NamedTemporaryFile ( suffix = ".ctl" ) as ctl_handle : # The attributes to be loaded must be qouted using double quotes unqouted_atts = str ( tuple ( attributes )). # cx_Oracle or JDBC def oraclebulkloader ( name, attributes, fieldsep, rowsep, nullval, filehandle ): # The configuration file used by SQL Loader must use the suffix. Then it will be passed, if not then None is passed.įilehandle – Either the name of the file or the file object itself,ĭepending upon the value of member usefilename on the class. Nullval – If the class was passed a string to substitute None values with, Rowsep – The string used to separate rows in the temporary file. Name – The name of the table in the data warehouse.Īttributes – A list containing the sequence of attributes in the table.įieldsep – The string used to separate fields in the temporary file. Required signature of a function bulk loading data from a file into an RDBMS Must have the following signature: func(name, attributes, fieldsep, rowsep, nullval, filehandle): Warehouse, must be passed to each of these classes constructors. Thus a function thatĬan bulk load data from a file into the specific RDBMS used for the data Showing how bulk loading can be performed for some of the more commonly usedĬurrently, three classes in pygrametl use bulk loading: BulkDimension,ĬachedBulkDimension, and BulkFactTable.
The following is a list of example functions Must be created that uses the functionality provided by a particular RDBMS toīulk load the data from a file. Bulk loading works by loading dataįrom a temporary file into the database. Increase the throughput of an ETL program. Bulk loading rows instead of inserting them one at a time can dramatically
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