kandi X-RAY | tpch Summary
kandi X-RAY | tpch Summary
Port of TPC-H dbgen to Java
Top functions reviewed by kandi - BETA
- Loads defaults
- Loads a distribution from the given lines
- Load a list of distributions
- Returns true if the given statement is an end statement
- Generates a sentence
- Generates a noun phrase
- Generates a verb phrase
- Create a list of date strings
- Returns the Julian date in Julian year
- Constructs a date from the given index
- Generates a random sentence
- Generates a random verb phrase
- Returns the next value
- Generate a random value
- Returns true if this instance has the same precision
tpch Key Features
tpch Examples and Code Snippets
Trending Discussions on tpch
I am trying to run hive tpcdh by following the instruction from https://github.com/hortonworks/hive-testbench.git . I am running into the following error. This issue is not seen for tpcds-setup.
This is not working on CDP Trial 7.3.1, CDH Version: Cloudera Enterprise 6.3.4 but working on Apache Ambari Version 126.96.36.199...
ANSWERAnswered 2022-Feb-24 at 14:17
In hive-testbench/tpch-gen/pom.xml, changed the hadoop version and the issue got resolved
I am trying to decorrelate this correlated query:...
ANSWERAnswered 2021-Nov-09 at 22:29
To make those queries equivalent you need to use the join condition
c1.c_mktsegment=c2.c_mktsegment for every row. By making it part of the
OR, you are joining every row of
c1.c_mktsegment = 'AUTOMOBILE' to every row of
c2 regardless of what c2.c_mkrsegment is.
I believe this is what you want:
I'm still new to PLSQL and am currently using TPCH Dataset to practice. I have been trying this for a while not but I can't seem to wrap my head around it and could use some advice. A rough overview of the dataset here.
Here is my code so far...
ANSWERAnswered 2021-Nov-09 at 13:22
INTO. It is required in PL/SQL, but not when
select is part of a cursor (in your case, that's a cursor
Also, you'd then reference
countNationkey with cursor variable's name (
QROW.countNationkey), which also means that you don't need a local variable.
I am using the WordCountProg from the tutorial on https://www.tutorialspoint.com/apache_flink/apache_flink_creating_application.htm . The code is as follows:
ANSWERAnswered 2021-Jun-03 at 14:34
If using minikube you need to first mount the volume using
I am trying to run a SQL query to find a 50th percentile in a table within a certain group, but then i am also grouping the result over the same field. Here is my query, for example over the tpch's nation table:...
ANSWERAnswered 2021-Jun-01 at 21:28
You would use
percentile_cont() to get a percentage of some ordered value. For instance, if you had a
population column for the region, then you would calculate the median population as:
So I am trying to clean up the DATA_PUMP_DIR with the function
as is described in the documentation: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Oracle.Procedural.Importing.html#Oracle.Procedural.Importing.DataPumpS3.Step6
But the problem is that
EXEC command is not recognized.
ORA-00900: invalid SQL statement.
I have tried writing
execute instead or writing
begin ... end function but still this wouldn't work. Could there be some permission issues? If so how can I grant them to myself?
I am using oracle se2 12.1.
Edit: I have tried running:...
ANSWERAnswered 2021-Jan-09 at 14:34
In the end I just installed sqlplus and ran the command from there
As we know , we can send a key with kafka producer which is hashed internally to find which partition in topic data goes to. I have a producer , where in I am sending a data in JSON format....
ANSWERAnswered 2020-Dec-22 at 19:41
it stored all the data in partition-0
That doesn't mean it's not working. Just means that the hashes of the keys ended up in the same partition.
If you want to override the default partitioner, you need to define your own Partitioner class to parse the message and assign the appropriate partition, then set
partitioner.class in the Producer properties
I want all unique key(deviceID) will store in different partition
Then you would have to know your compete dataset ahead of time to create N partitions for N devices. And what happens when you add a completely new device?
I need to pushing a JSON file into a Kafka topic, connecting the topic in presto and structuring the JSON data into a queryable table.
I am following this tutorial https://prestodb.io/docs/current/connector/kafka-tutorial.html#step-2-load-data
I am not able to understand how this command will work.
$ ./kafka-tpch load --brokers localhost:9092 --prefix tpch. --tpch-type tiny
Suppose I have created test topic in kafka using producer. How will tpch file will generate of this topic?...
ANSWERAnswered 2020-Dec-18 at 05:10
If you already have a topic, you should skip to step 3 where it actually sets up the topics to query via Presto
kafka-tpch load creates new topics with the specified prefix
I have a docker image
felipeogutierrez/tpch-dbgen that I build using
docker-compose and I push it to docker-hub registry using
ANSWERAnswered 2020-Sep-22 at 11:28
Docker has an unusual feature where, under some specific circumstances, it will populate a newly created volume from the image. You should not rely on this functionality, since it completely ignores updates in the underlying images and it doesn't work on Kubernetes.
In your Kubernetes setup, you create a new empty PersistentVolumeClaim, and then mount this over your actual data in both the init and main containers. As with all Unix mounts, this hides the data that was previously in that directory. Nothing causes data to get copied into that volume. This works the same way as every other kind of mount, except the Docker named-volume mount: you'll see the same behavior if you change your Compose setup to do a host bind mount, or if you play around with your local development system using a USB drive as a "volume".
You need to make your init container (or something else) explicitly copy data into the directory. For example:
I have a flink JobManager with only one TaskManager running on top of Kubernetes. For this I use a
Service and a
Deployment for the TaskManager with
ANSWERAnswered 2020-Sep-24 at 11:02
I got to put it to work based on this answer https://stackoverflow.com/a/55139221/2096986 and the documentation. The first thing is that I had to use
StatefulSet instead of
Deployment. With this I can set the Pod IP to be stateful. Something that was not clear is that I had to set the
Service to use
clusterIP: None instead of
type: ClusterIP. So here is my service:
No vulnerabilities reported
You can use tpch like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the tpch component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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