Categories:

Information Schema , Table functions

DATA_TRANSFER_HISTORY¶

This table function can be used to query the history of data transferred from Snowflake tables into a different cloud storage provider’s network (i.e. from Snowflake on AWS, Google Cloud Platform, or Microsoft Azure into the other cloud provider’s network) and/or geographical region within a specified date range. The function returns the history for your entire Snowflake account.

Note

This function returns data transfer activity within the last 14 days.

Syntax¶

DATA_TRANSFER_HISTORY(
      [ DATE_RANGE_START => <constant_expr> ]
      [, DATE_RANGE_END => <constant_expr> ] )
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Arguments¶

All the arguments are optional.

DATE_RANGE_START => constant_expr , . DATE_RANGE_END => constant_expr

The date/time range, within the last 2 weeks, for which to retrieve the data transfer history:

  • If an end date is not specified, then CURRENT_DATE is used as the end of the range.

  • If a start date is not specified, then the range starts 10 minutes prior to the start of DATE_RANGE_END (i.e. the default is to show the previous 10 minutes of data transfer history). For example, if DATE_RANGE_END is CURRENT_DATE, then the default DATE_RANGE_START is 11:50 PM on the previous day.

History is displayed in increments of 5 minutes, 1 hour, or 24 hours (depending on the length of the specified range).

If the range falls outside the last 15 days, an error is returned.

Usage notes¶

  • Returns results only for the ACCOUNTADMIN role or any role that has been explicitly granted the MONITOR USAGE global privilege.

  • When calling an Information Schema table function, the session must have an INFORMATION_SCHEMA schema in use or the function name must be fully-qualified. For more details, see Snowflake Information Schema.

Output¶

The function returns the following columns:

Column Name

Data Type

Description

START_TIME

TIMESTAMP_LTZ

Start of the specified time range in which the data transfer took place.

END_TIME

TIMESTAMP_LTZ

End of the specified time range in which the data transfer took place.

SOURCE_CLOUD

TEXT

Name of the cloud provider where the data transfer originated: Amazon Web Services, Google Cloud Platform, or Microsoft Azure.

SOURCE_REGION

TEXT

Region where the data transfer originated.

TARGET_CLOUD

TEXT

Name of the cloud provider where the data was sent: AWS, Google Cloud Platform, or Microsoft Azure.

TARGET_REGION

TEXT

Region where the data was sent.

BYTES_TRANSFERRED

NUMBER

Number of bytes transferred during the START_TIME and END_TIME window.

TRANSFER_TYPE

VARCHAR

Type of operation that caused transfer. COPY, EXTERNAL_ACCESS, EXTERNAL_FUNCTION, REPLICATION.

Examples¶

Retrieve the data transfer history for a 30 minute range, in 5 minute periods, for your account:

select *
  from table(mydb.information_schema.data_transfer_history(
    date_range_start=>to_timestamp_tz('2017-10-24 12:00:00.000 -0700'),
    date_range_end=>to_timestamp_tz('2017-10-24 12:30:00.000 -0700')));
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Retrieve the data transfer history for the last 12 hours, in 1 hour periods, for your account:

select *
  from table(information_schema.data_transfer_history(
    date_range_start=>dateadd('hour',-12,current_timestamp())));
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Retrieve the data transfer history for the last 14 days, in 1 day periods, for your account:

select *
  from table(information_schema.data_transfer_history(
    date_range_start=>dateadd('day',-14,current_date()),
    date_range_end=>current_date()));
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