8/26/2023 0 Comments Redshift json object![]() An Avro source file includes a schema that defines the structure of the data. Specifies that the source data is in Avro format.Īvro format is supported for COPY from these services and protocols:Īvro isn't supported for COPY from DynamoDB.Īvro is a data serialization protocol. The tolerance value is optional.įor examples of loading shapefiles, see Loading a shapefile into Amazon Redshift. This algorithm calculates the size to store objects within the tolerance specified. This simplification uses the Ramer-Douglas-Peucker algorithm and the automatically calculated tolerance if this doesn't exceed the specified tolerance. (Optional) Simplifies only geometries that are larger than the maximum geometry size. (Optional) Simplifies all geometries during the ingestion process using the Ramer-Douglas-Peucker algorithm and the given tolerance. To use GEOGRAPHY objects with COPY FROM SHAPEFILE, first ingest into a GEOMETRY column, and then cast the objects to GEOGRAPHY objects. You can't use SHAPEFILE with FIXEDWIDTH, REMOVEQUOTES, or ESCAPE. ![]() All subsequent columns follow the order specified in the shapefile. By default, the first column of the shapefile is either a GEOMETRY or IDENTITY column. SHAPEFILE ]Įnables use of SHAPEFILE format in the input data. ![]() The format for fixedwidth_spec is shown following: For more information, see Character types. In Amazon Redshift, the length of CHAR and VARCHAR columns is expressed in bytes, so be sure that the column width that you specify accommodates the binary length of multibyte characters when preparing the file to be loaded. FIXEDWIDTH can't be used with CSV or DELIMITER. The order of the label/width pairs must match the order of the table columns exactly. The column label has no relation to the column name. The column label can be either a text string or an integer, depending on what the user chooses. ![]() The fixedwidth_spec is a string that specifies a user-defined column label and column width. Loads the data from a file where each column width is a fixed length, rather than columns being separated by a delimiter. The default delimiter is a pipe character ( | ), unless the CSV parameter is used, in which case the default delimiter is a comma (, ). ASCII characters can also be represented in octal, using the format '\ddd', where 'd' is an octal digit (0–7). Non-printing ASCII characters are supported. Specifies the single ASCII character that is used to separate fields in the input file, such as a pipe character ( | ), a comma (, ), or a tab ( \t ). The QUOTE parameter can be used only with the CSV parameter. If you use the QUOTE parameter to define a quotation mark character other than double quotation mark, you don't need to escape double quotation marks within the field. The default is a double quotation mark ( " ). Specifies the character to be used as the quotation mark character when using the CSV parameter. If the delimiter is a white space character, such as a tab, the delimiter isn't treated as white space.ĬSV can't be used with FIXEDWIDTH, REMOVEQUOTES, or ESCAPE. When a field is enclosed in quotation marks, white space between the delimiters and the quotation mark characters is ignored. You can specify a different delimiter by using the DELIMITER parameter. When the CSV parameter is used, the default delimiter is a comma (, ). For example, if the quotation mark character is a double quotation mark, to insert the string A "quoted" word the input file should include the string "A ""quoted"" word". When the quotation mark character is used within a field, escape the character with an additional quotation mark character. The default quotation mark character is a double quotation mark ( " ). To automatically escape delimiters, newline characters, and carriage returns, enclose the field in the character specified by the QUOTE parameter. The FORMAT arguments are described following.Įnables use of CSV format in the input data. (Optional) Identifies data format keywords. For more information, see COPY from columnar data formats. In addition to the standard data formats, COPY supports the following columnar data formats for COPY from Amazon S3:ĬOPY from columnar format is supported with certain restriction. If the source data is in another format, use the following parameters to specify the data format: The default delimiter is a pipe character ( | ). By default, the COPY command expects the source data to be character-delimited UTF-8 text.
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