Required. The BigQuery dataset in format
"projects/projectId/datasets/datasetId", to which the
snapshot result should be exported. If this dataset does not
exist, the export call returns an INVALID_ARGUMENT error.
Setting the contentType for exportAssets determines
of the BigQuery table. Setting
separateTablesPerAssetType to TRUE also influences
Required. The BigQuery table to which the
snapshot result should be written. If this table
does not exist, a new table with the given name
will be created.
If the destination table already exists and this flag is
TRUE, the table will be overwritten by the contents of
assets snapshot. If the flag is FALSE or unset and the
destination table already exists, the export call returns an
[partition_spec] determines whether to export to partitioned
table(s) and how to partition the data.
If [partition_spec] is unset or
[partition_spec.partition_key] is unset or
PARTITION_KEY_UNSPECIFIED, the snapshot results will be
exported to non-partitioned table(s). [force] will decide
whether to overwrite existing table(s).
If [partition_spec] is specified. First, the snapshot
results will be written to partitioned table(s) with two
additional timestamp columns, readTime and requestTime, one
of which will be the partition key. Secondly, in the case
when any destination table already exists, it will first try
to update existing table's schema as necessary by appending
additional columns. Then, if [force] is TRUE, the
corresponding partition will be overwritten by the snapshot
results (data in different partitions will remain intact);
if [force] is unset or FALSE, it will append the data.
An error will be returned if the schema update or data
If this flag is TRUE, the snapshot results will be
written to one or multiple tables, each of which contains
results of one asset type. The [force] and [partition_spec]
fields will apply to each of them.
Field [table] will be concatenated with "*" and the asset
type names (see
for supported asset types) to construct per-asset-type table
names, in which all non-alphanumeric characters like "." and
"/" will be substituted by "*". Example: if field [table] is
"mytable" and snapshot results contain
"storage.googleapis.com/Bucket" assets, the corresponding
table name will be "mytable_storage_googleapis_com_Bucket".
If any of these tables does not exist, a new table with the
concatenated name will be created.
When [content_type] in the ExportAssetsRequest is
RESOURCE, the schema of each table will include
RECORD-type columns mapped to the nested fields in the
Asset.resource.data field of that asset type (up to the 15
nested level BigQuery supports
The fields in >15 nested levels will be stored in JSON
format string as a child column of its parent RECORD column.
If error occurs when exporting to any table, the whole
export call will return an error but the export results that
already succeed will persist. Example: if exporting to
table_type_A succeeds when exporting to table_type_B fails
during one export call, the results in table_type_A will
persist and there will not be partial results persisting in