I want to generate JSON from two usual clickhouse columns and value of one such column has backslash in its containment. First I create table CREATE TABLE app_events.al_test (col1 String,col2 String) ENGINE = MergeTree ORDER BY col1; Then I insert…
I have a large dataset containing over 10 million JSON records. Could someone please advise on the most efficient method to insert these into a string column table? Currently, I am using clickhouse_driver, but it takes approximately one minute to…
I have Clickhouse-server and Airflow all are Docker containers in WSL. They're both running and i even managed to connect to Clickhouse somehow, but when trying to query i get the following traceback in Airflow logs: [2024-06-04, 12:17:49 UTC] {logging_mixin.py:188}…
There is a running ClickHouse container clickhouse-server: image: yandex/clickhouse-server container_name: clickhouse-server ports: - '8123:8123' - '9000:9000' volumes: - ./db:/var/lib/clickhouse ulimits: nofile: 262144 There are configured connection parameters in .env CLICKHOUSE_HOST=clickhouse-server CLICKHOUSE_PORT=8123 CLICKHOUSE_DATABASE=memorial_analitucs CLICKHOUSE_USERNAME=default CLICKHOUSE_PASSWORD= CLICKHOUSE_TIMEOUT_CONNECT=5 CLICKHOUSE_TIMEOUT_QUERY=5 When performing the migration,…
I have downloaded this click-house docker image https://hub.docker.com/r/clickhouse/clickhouse-server/ I started click-house server with the following command docker run --network=host --name some-clickhouse-server --ulimit nofile=262144:262144 clickhouse/clickhouse-server I connected with clickhouse with the following command docker exec -it some-clickhouse-server clickhouse-client Output of the…
I have an SQL script, which returns the data from a Clickhouse table in amount of ~23k rows. I want to insert that exact data into a table in MySQL. Since they're two different DBs and there's no proxy to…
Today, I restarted the clickhouse service, but it couldn't get up. I went to check the logs and reported any errors, as shown in the following figure: enter image description here Baidu hasn't found a solution for a long time.…
I am using clickhouse database and data are stored at /media/user/data/clickhouse and /media/user/data/clickhouse-server. When I run a docker container $ docker run --name local-clickhouse --ulimit nofile=262144:262144 -u 1000:1000 -p 8123:8123 -p 9000:9000 -p 9009:9009 -v /media/user/data/clickhouse:/var/lib/clickhouse -v /media/user/data/clickhouse-server:/var/log/clickhouse-server -dit clickhouse/clickhouse-server…
I can't connect a local database to docker-compose running a Superset container. I'm using Superset to show information of a database that is stored locally. While Superset is running as a container ran by docker-compose. Superset can't access the database…
I'm running clickhouse on a docker container and mounted volumes on an external harddrive: sudo docker run --name clickhouse-server --ulimit nofile=262144:262144 -p 18123:8123 -p 19000:9000 -p 19009:9009 -v ./clickhouse:/var/lib/clickhouse -v ./clickhouse-server:/var/log/clickhouse-server -dit clickhouse/clickhouse-server I installed clickhouse-client using apt and this…