PLUGINSPLUGIN-JDBC-CLICKHOUSETASKSIO.KESTRA.PLUGIN.JDBC.CLICKHOUSE.QUERY

​Query

Query Query

yaml
type: "io.kestra.plugin.jdbc.clickhouse.Query"

Query a Clickhouse database.

Examples

Send a sql query to a Clickhouse database and fetch a row as outputs

yaml
id: "query"
type: "io.kestra.plugin.jdbc.clickhouse.Query"
url: jdbc:clickhouse://127.0.0.1:56982/
username: clickhouse
password: ch_passwd
sql: select * from clickhouse_types
fetchOne: true

Properties

url

  • Type: string
  • Dynamic: ✔️
  • Required: ✔️

The jdbc url to connect to the database

autoCommit

  • Type: boolean
  • Dynamic: ❌
  • Required: ❌
  • Default: true

If autocommit is enabled

Sets this connection's auto-commit mode to the given state. If a connection is in auto-commit mode, then all its SQL statements will be executed and committed as individual transactions. Otherwise, its SQL statements are grouped into transactions that are terminated by a call to either the method commitor the method rollback. By default, new connections are in auto-commit mode except if you are using a store properties that will disabled autocommit whenever this properties values.

fetch

  • Type: boolean
  • Dynamic: ❌
  • Required: ❌
  • Default: false

Whether to fetch the data from the query result to the task output This parameter is evaluated after 'fetchOne' and 'store'.

fetchOne

  • Type: boolean
  • Dynamic: ❌
  • Required: ❌
  • Default: false

Whether to fetch only one data row from the query result to the task output. This parameter is evaluated before 'store' and 'fetch'.

fetchSize

  • Type: integer
  • Dynamic: ❌
  • Required: ❌
  • Default: 10000

Number of rows that should be fetched

Gives the JDBC driver a hint as to the number of rows that should be fetched from the database when more rows are needed for this ResultSet object. If the fetch size specified is zero, the JDBC driver ignores the value and is free to make its own best guess as to what the fetch size should be. Ignored if autoCommit is false.

password

  • Type: string
  • Dynamic: ✔️
  • Required: ❌

The database user's password

sql

  • Type: string
  • Dynamic: ✔️
  • Required: ❌

The sql query to run

store

  • Type: boolean
  • Dynamic: ❌
  • Required: ❌
  • Default: false

Whether to fetch data row from the query result to a file in internal storage. File will be saved as Amazon Ion (text format). See Amazon Ion documentation This parameter is evaluated after 'fetchOne' but before 'fetch'.

timeZoneId

  • Type: string
  • Dynamic: ❌
  • Required: ❌

The time zone id to use for date/time manipulation. Default value is the worker default zone id.

username

  • Type: string
  • Dynamic: ✔️
  • Required: ❌

The database user

Outputs

row

  • Type: object

Map containing the first row of fetched data

Only populated if 'fetchOne' parameter is set to true.

rows

  • Type: array
  • SubType: object

Lit of map containing rows of fetched data

Only populated if 'fetch' parameter is set to true.

size

  • Type: integer

The size of the fetched rows

Only populated if 'store' or 'fetch' parameter is set to true.

uri

  • Type: string

The url of the result file on kestra storage (.ion file / Amazon Ion text format)

Only populated if 'store' is set to true.