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ICEBERG_TABLE_SNAPSHOT_REFRESH_HISTORY¶
Returns metadata and snapshot information about the most recent refresh history for a specified externally managed Apache Icebergâ„¢ table.
- See also:
Apache Iceberg™ tables , Metadata and retention for Apache Iceberg™ tables , ALTER ICEBERG TABLE … REFRESH
Syntax¶
ICEBERG_TABLE_SNAPSHOT_REFRESH_HISTORY(
TABLE_NAME => '<table_name>'
)
Arguments¶
TABLE_NAME => 'table_name'The name of the externally managed Iceberg table for which you want to retrieve the snapshot refresh history.
Output¶
The function returns the following columns:
Column name |
Data type |
Description |
|---|---|---|
REFRESHED_ON |
TIMESTAMP_LTZ |
The timestamp when the table was last refreshed. |
METADATA_FILE_NAME |
TEXT |
The full path to the metadata file. |
SNAPSHOT_ID |
TEXT |
The snapshot ID of the last refresh. |
SEQUENCE_NUMBER |
TEXT |
The sequence number of the last refresh; NULL for Iceberg v1. |
ICEBERG_SCHEMA_ID |
TEXT |
The schema ID of the refresh (from metadata). |
QUERY_ID |
TEXT |
The ID of the query that performed the refresh. For tables that use automated refresh, this column contains a sentinel value, which indicates that the refresh was automated. |
IS_CURRENT_SNAPSHOT |
BOOLEAN |
TRUE if the table is refreshed on this snapshot; otherwise, FALSE. |
SNAPSHOT_SUMMARY |
VARIANT |
The Iceberg snapshot summary from the |
Examples¶
Retrieve information for the current version of an externally managed Iceberg table named my_iceberg_table:
SELECT *
FROM TABLE(INFORMATION_SCHEMA.ICEBERG_TABLE_SNAPSHOT_REFRESH_HISTORY(
TABLE_NAME => 'my_iceberg_table'
));
Output:
+-------------------------------+----------------------------------------------------------------------------------+---------------------+-----------------+-------------------+--------------------------------------+---------------------+---------------------------------+
| REFRESHED_ON | METADATA_FILE_NAME | SNAPSHOT_ID | SEQUENCE_NUMBER | ICEBERG_SCHEMA_ID | QUERY_ID | IS_CURRENT_SNAPSHOT | SNAPSHOT_SUMMARY |
|-------------------------------+----------------------------------------------------------------------------------+---------------------+-----------------+-------------------+--------------------------------------+---------------------+---------------------------------|
| 2024-12-09 11:00:50.506 -0800 | s3://my-bucket/metadata/00000-e3bf7230-283f-4626-a770-fe97a3ca239e.metadata.json | NULL | NULL | 0 | 01b8ebb4-0002-3a10-0000-012903c7e42a | False | NULL |
| 2024-12-09 11:01:35.543 -0800 | s3://my-bucket/metadata/00001-bf116652-b5b0-479a-947e-6c799e4ca124.metadata.json | 6201065399847600377 | NULL | 0 | 01b8ebb5-0002-3a14-0000-012903c7f336 | True | { |
| | | | | | | | "added-data-files": "4", |
| | | | | | | | "added-files-size": "144896", |
| | | | | | | | "added-records": "150000", |
| | | | | | | | "manifests-created": "1", |
| | | | | | | | "manifests-kept": "0", |
| | | | | | | | "manifests-replaced": "0", |
| | | | | | | | "total-data-files": "4", |
| | | | | | | | "total-files-size": "144896", |
| | | | | | | | "total-records": "150000" |
| | | | | | | | } |
+-------------------------------+----------------------------------------------------------------------------------+---------------------+-----------------+-------------------+--------------------------------------+---------------------+---------------------------------+