csv

Options

-c,--charset <arg>                                    sets the file
                                                      character set
-d,--delimiter <arg>                                  specifies the
                                                      delimiter
-e,--encoding <arg>                                   specifies the external
                                                      file character set
-f,--file <arg>                                       specifies the external
                                                      file column
-n,--name <arg>                                       specifies the external
                                                      file name pattern
-t,--type <default | excel | rfc4180 | mysql | tdf>   sets the csv type.

Note

  • Binary types are converted to hexadecimal format.

  • NULL values are convert to empty strings.

  • Array and Struct types are converted to string simply using toString() functions of the object.

    • For Teradata, PERIOD data types, which are transmitted as Struct types, are converted into formats that matches their BTEQ output formats.

  • In most cases, CSV exporter relies on the toString() function of the object retrieved by the JDBC driver to obtain the output. There is no guarantee such String representations can be used for import.

External File Name Pattern

The file name pattern basically uses printf <https://en.wikipedia.org/wiki/Printf_format_string> format. Thus a name pattern of img%02d.png would generate img01.png, img02.png, etc. The numbering starts from 1.

Multiple columns can share the same naming pattern. For instance, the following example have two columns share the same naming pattern and counter.

.export csv -n %02d.bin -f 2 -f 3 file1.csv
SELECT * FROM MyTable ORDER BY a;

To specify different naming patterns for different columns, just specify a new naming pattern before specifying the -f option.

.export csv -n %02d.bin -f2 -n img%04d.png -f3 file1.csv
SELECT * FROM MyTable ORDER BY a;

External File Character Set

Much like external file name pattern, -e option needs to be specified before -f option to be effective. In the following example, column 2 is exported in UTF-8 character set, while column 3 is exported in UTF-16LE character set.

.export csv -e UTF-8 -f2 -e UTF-16LE -f3 file1.csv
SELECT * FROM MyTable ORDER BY a;