KSQL 5.0 Query not working

First of all, great to see the 5.0 migration merged into the project.

I tried the updated project with my KSQL demo. I started Kafka and KSQL via Confluent CLI and your Python app can connect it successfully. “Show Streams” works well. But the simple “select * from X” query does not work yet. It returns <generator object query at 0x10a4ff370>.

`kai.waehner@Kais-MacBook-12:~|⇒ python Python 2.7.14 |Anaconda custom (64-bit)| (default, Oct 5 2017, 02:28:52) [GCC 4.2.1 Compatible Clang 4.0.1 (tags/RELEASE_401/final)] on darwin Type “help”, “copyright”, “credits” or “license” for more information.

import logging from ksql import KSQLAPI logging.basicConfig(level=logging.DEBUG) client = KSQLAPI(‘http://localhost:8088’) DEBUG:urllib3.connectionpool:Starting new HTTP connection (1): localhost:8088 DEBUG:urllib3.connectionpool:http://localhost:8088 “GET /info HTTP/1.1” 200 None client.ksql(‘show tables’) DEBUG:root:KSQL generated: show tables DEBUG:urllib3.connectionpool:Starting new HTTP connection (1): localhost:8088 DEBUG:urllib3.connectionpool:http://localhost:8088 “POST /ksql HTTP/1.1” 200 None [{u’tables’: [], u’@type’: u’tables’, u’statementText’: u’show tables;‘}] client.ksql(‘show streams’) DEBUG:root:KSQL generated: show streams DEBUG:urllib3.connectionpool:Starting new HTTP connection (1): localhost:8088 DEBUG:urllib3.connectionpool:http://localhost:8088 “POST /ksql HTTP/1.1” 200 None [{u’streams’: [{u’topic’: u’pageviews’, u’type’: u’STREAM’, u’name’: u’PAGEVIEWS_ORIGINAL’, u’format’: u’DELIMITED’}], u’@type’: u’streams’, u’statementText’: u’show streams;'}] client.query(‘select * from pageviews_original’) <generator object query at 0x10a4ff370>`

Any ideas?

It is a normal KSQL Stream, nothing special:

`ksql> describe pageviews_original;

Name : PAGEVIEWS_ORIGINAL Field | Type

ROWTIME | BIGINT (system) ROWKEY | VARCHAR(STRING) (system) VIEWTIME | BIGINT USERID | VARCHAR(STRING) PAGEID | VARCHAR(STRING)

For runtime statistics and query details run: DESCRIBE EXTENDED <Stream,Table>; ksql>`

[kaiwaehner]

Okay, makes sense.

I think we just need some better documentation with an example then.

[kaiwaehner]

Okay, the following works for me

query = client.query('select * from PAGEVIEWS_ORIGINAL')
for item in query: print(item)

And please note that I am a total Python newbie 😃 - otherwise I would have realized that generator object is a common term in Python. Sounded to me like an exception…

But I would still like to see the “print option” so that you can print it with just one single command (makes interactive analysis easier).