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Truncate Table

The Truncate Table component removes all rows from a table or partitions, while keeping the table intact.

Snowflake, Amazon Redshift: Truncate is implemented in two different ways, depending upon whether the current flow is in the middle of a database transaction. The first is by using a TRUNCATE statement. The second is by using a DELETE FROM statement, which is preferable if the current job is using a transaction.

Delta Lake on Databricks: The table must not be a view or an external or temporary table.

:::info{title='Note'}

  • A truncate operation is faster than a delete operation.
  • A truncate operation is not transaction safe—it cannot be rolled back.
  • Amazon Redshift: Deleting Rows (e.g. via the Delete Rows component) requires a vacuum to reclaim space from the removed rows.
  • Amazon Redshift: Truncate does not require a separate vacuum. :::
Data platform Truncate docs Delete docs
Snowflake TRUNCATE TABLE DELETE
Delta Lake on Databricks TRUNCATE TABLE DROP TABLE
Amazon Redshift TRUNCATE DELETE
Azure Synapse Analytics TRUNCATE TABLE DELETE

Properties

Name = string

A human-readable name for the component.

Warehouse = drop-down

The Snowflake warehouse used to run the queries. The special value, [Environment Default], will use the warehouse defined in the environment. Read Overview of Warehouses to learn more.

Database = drop-down

The Snowflake database. The special value, [Environment Default], will use the database defined in the environment. Read Databases, Tables and Views - Overview to learn more.

Schema = drop-down

The Snowflake schema. The special value, [Environment Default], will use the schema defined in the environment. Read Database, Schema, and Share DDL to learn more.

Tables to Truncate = dual listbox

The tables to truncate.

Name = string

A human-readable name for the component.

Catalog = drop-down

Select a Databricks Unity Catalog. The special value, [Environment Default], will use the catalog specified in the Matillion ETL environment setup. Selecting a catalog will determine which databases are available in the next parameter.

Database = drop-down

Select the Delta Lake database. The special value, [Environment Default], will use the database specified in the Matillion ETL environment setup.

Tables to Truncate = dual listbox

The tables to truncate.

Name = string

A human-readable name for the component.

Schema = drop-down

Select the table schema. The special value, [Environment Default], will use the schema defined in the environment. For more information on using multiple schemas, read Schemas.

Tables to Truncate = dual listbox

The tables to truncate.

Name = string

A human-readable name for the component.

Schema = drop-down

Select the table schema. The special value, [Environment Default], will use the schema defined in the environment. For more information on schemas, read the Azure Synapse documentation.

Tables to Truncate = dual listbox

The tables to truncate.

Snowflake Delta Lake on Databricks Amazon Redshift Google BigQuery Azure Synapse Analytics
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