The following example shows the script table operator returning a BYTE and other data types in the return value list:
SELECT * FROM SCRIPT( ON script_syn_res_tab001 SCRIPT_COMMAND('cat') DELIMITER(',') RETURNS ('uid int', 'helen BYTE', 'word varchar(10)', 'id int') ) as srpt;
In the following Python script, the print command returns HEX numbers for a BYTE (20) return value.
The 'mapper5.py' script:
#!/usr/bin/python import sys print '040A1b202EC4a256406F7D7Ffffcf3 33 22.4 abc'
Save the mapper5.py script in /home/tdatuser or modify the directory location in the following SQL.
Test the script:
Select * from SCRIPT(SCRIPT_COMMAND ('/home/tdatuser/mapper5.py' ) returns ('v byte(20)', 'v2 int', 'v3 float', 'v4 varchar(10)') ) as d1;
Result:
v | v2 | v3 | v4 |
---|---|---|---|
040A1B202EC4A256406F7D7FFFFCF30000000000 | 33 | 2.24000000000000E 001 | abc |
040A1B202EC4A256406F7D7FFFFCF30000000000 | 33 | 2.24000000000000E 001 | abc |
040A1B202EC4A256406F7D7FFFFCF30000000000 | 33 | 2.24000000000000E 001 | abc |
040A1B202EC4A256406F7D7FFFFCF30000000000 | 33 | 2.24000000000000E 001 | abc |
In the example, the delimiter is a tab. You can specify another character as the delimiter; for example, to specify a comma as the delimiter:
#!/usr/bin/python import sys print '040A1b202EC4a256406F7D7Ffffcf3,33,22.4,abc'
Change the SELECT statement accordingly:
SELECT * from SCRIPT(SCRIPT_COMMAND ('/home/tdatuser/mapper5.py' ) delimiter(',') returns ('v byte(20)', 'v2 int', 'v3 float', 'v4 varchar(10)') ) as d1;