Fetches the data from a BigQuery table (alternatively fetch data for selected columns) and insert that data into a MSSQL table.

View on GitHub

Last Updated: Feb. 11, 2023

Access Instructions

Install the Google provider package into your Airflow environment.

Import the module into your DAG file and instantiate it with your desired params.


source_project_dataset_tableRequiredA dotted ..: the big query table of origin
selected_fieldsList of fields to return (comma-separated). If unspecified, all fields are returned.
gcp_conn_idreference to a specific Google Cloud hook.
delegate_toThe account to impersonate using domain-wide delegation of authority, if any. For this to work, the service account making the request must have domain-wide delegation enabled.
mssql_conn_idreference to a specific mssql hook
databasename of database which overwrite defined one in connection
replaceWhether to replace instead of insert
batch_sizeThe number of rows to take in each batch
locationThe location used for the operation.
impersonation_chainOptional service account to impersonate using short-term credentials, or chained list of accounts required to get the access_token of the last account in the list, which will be impersonated in the request. If set as a string, the account must grant the originating account the Service Account Token Creator IAM role. If set as a sequence, the identities from the list must grant Service Account Token Creator IAM role to the directly preceding identity, with first account from the list granting this role to the originating account (templated).


Fetches the data from a BigQuery table (alternatively fetch data for selected columns) and insert that data into a MSSQL table.

See also

For more information on how to use this operator, take a look at the guide: Operator


If you pass fields to selected_fields which are in different order than the order of columns already in BQ table, the data will still be in the order of BQ table. For example if the BQ table has 3 columns as [A,B,C] and you pass ‘B,A’ in the selected_fields the data would still be of the form 'A,B' and passed through this form to MSSQL


transfer_data = BigQueryToMsSqlOperator(

Was this page helpful?