> ## Documentation Index
> Fetch the complete documentation index at: https://docs.kinetica.com/llms.txt
> Use this file to discover all available pages before exploring further.

# /create/table/external

```
URL: http://<db.host>:<db.port>/create/table/external
```

Creates a new [external table](../../concepts/external_tables/), which is
a local database object whose source data is located externally to the
database.  The source data can be located either in
[KiFS](../../tools/kifs/); on the cluster, accessible to the database; or
remotely, accessible via a pre-defined external
[data source](../../concepts/data_sources/).

The external table can have its structure defined explicitly, via input
parameter *create\_table\_options*, which contains many of the options from
[/create/table](/content/api/rest/create_table_rest); or defined implicitly,
inferred from the source data.

## Input Parameter Description

<ParamField body="table_name" type="string">
  Name of the table to be created, in \[schema\_name.]table\_name format, using standard [name resolution rules](../../concepts/tables/#table-name-resolution) and meeting [table naming criteria](../../concepts/tables/#table-naming-criteria).
</ParamField>

<ParamField body="filepaths" type="array of strings">
  A list of file paths from which data will be sourced;

  For paths in [KiFS](../../tools/kifs/), use the URI prefix of kifs\:// followed by the path to a file or directory. File matching by prefix is supported, e.g. kifs\://dir/file would match dir/file\_1 and dir/file\_2. When prefix matching is used, the path must start with a full, valid KiFS directory name.

  If an external data source is specified in *datasource\_name*, these file paths must resolve to accessible files at that data source location. Prefix matching is supported. If the data source is hdfs, prefixes must be aligned with directories, i.e. partial file names will not match.

  If no data source is specified, the files are assumed to be local to the database and must all be accessible to the gpudb user, residing on the path (or relative to the path) specified by the external files directory in the Kinetica [configuration file](../../config/#config-main-external-files). Wildcards (\*) can be used to specify a group of files.  Prefix matching is supported, the prefixes must be aligned with directories.

  If the first path ends in .tsv, the text delimiter will be defaulted to a tab character. If the first path ends in .psv, the text delimiter will be defaulted to a pipe character (|).
</ParamField>

<ParamField body="modify_columns" type="map of string to maps of string to strings">
  Not implemented yet.

  The default value is an empty map ( \{} ).
</ParamField>

<ParamField body="create_table_options" type="map of string to strings">
  Options from [/create/table](/content/api/rest/create_table_rest), allowing the structure of the table to be defined independently of the data source.

  The default value is an empty map ( \{} ).

  <Expandable title="create_table_options">
    <ParamField body="type_id">
      ID of a currently registered [type](../../concepts/types/).
    </ParamField>

    <ParamField body="no_error_if_exists">
      If *true*, prevents an error from occurring if the table already exists and is of the given type.  If a table with the same name but a different type exists, it is still an error.

      The default value is `false`.

      The supported values are:

      * true
      * false
    </ParamField>

    <ParamField body="is_replicated">
      Affects the [distribution scheme](../../concepts/tables/#distribution) for the table's data.  If *true* and the given table has no explicit [shard key](../../concepts/tables/#shard-key) defined, the table will be [replicated](../../concepts/tables/#replication). If *false*, the table will be [sharded](../../concepts/tables/#sharding) according to the shard key specified in the given *type\_id*, or [randomly sharded](../../concepts/tables/#random-sharding), if no shard key is specified. Note that a type containing a shard key cannot be used to create a replicated table.

      The default value is `false`.

      The supported values are:

      * true
      * false
    </ParamField>

    <ParamField body="foreign_keys">
      Semicolon-separated list of [foreign keys](../../concepts/tables/#foreign-keys), of the format '(source\_column\_name \[, ...]) references target\_table\_name(primary\_key\_column\_name \[, ...]) \[as foreign\_key\_name]'.
    </ParamField>

    <ParamField body="foreign_shard_key">
      Foreign shard key of the format 'source\_column references shard\_by\_column from target\_table(primary\_key\_column)'.
    </ParamField>

    <ParamField body="partition_type">
      [Partitioning](../../concepts/tables/#partitioning) scheme to use.

      * **RANGE**: Use [range partitioning](../../concepts/tables/#partitioning-by-range).
      * **INTERVAL**: Use [interval partitioning](../../concepts/tables/#partitioning-by-interval).
      * **LIST**: Use [list partitioning](../../concepts/tables/#partitioning-by-list).
      * **HASH**: Use [hash partitioning](../../concepts/tables/#partitioning-by-hash).
      * **SERIES**: Use [series partitioning](../../concepts/tables/#partitioning-by-series).
    </ParamField>

    <ParamField body="partition_keys">
      Comma-separated list of partition keys, which are the columns or column expressions by which records will be assigned to partitions defined by *partition\_definitions*.
    </ParamField>

    <ParamField body="partition_definitions">
      Comma-separated list of partition definitions, whose format depends on the choice of *partition\_type*.  See [range partitioning](../../concepts/tables/#partitioning-by-range), [interval partitioning](../../concepts/tables/#partitioning-by-interval), [list partitioning](../../concepts/tables/#partitioning-by-list), [hash partitioning](../../concepts/tables/#partitioning-by-hash), or [series partitioning](../../concepts/tables/#partitioning-by-series) for example formats.
    </ParamField>

    <ParamField body="is_automatic_partition">
      If *true*, a new partition will be created for values which don't fall into an existing partition.  Currently, only supported for [list partitions](../../concepts/tables/#partitioning-by-list).

      The default value is `false`.

      The supported values are:

      * true
      * false
    </ParamField>

    <ParamField body="ttl">
      Sets the [TTL](../../concepts/ttl/) of the table specified in input parameter *table\_name*.
    </ParamField>

    <ParamField body="chunk_size">
      Indicates the number of records per chunk to be used for this table.
    </ParamField>

    <ParamField body="chunk_column_max_memory">
      Indicates the target maximum data size for each column in a chunk to be used for this table.
    </ParamField>

    <ParamField body="chunk_max_memory">
      Indicates the target maximum data size for all columns in a chunk to be used for this table.
    </ParamField>

    <ParamField body="is_result_table">
      Indicates whether the table is a [memory-only table](../../concepts/tables_memory_only/). A result table cannot contain columns with text\_search [data-handling](../../concepts/types/#data-handling), and it will not be retained if the server is restarted.

      The default value is `false`.

      The supported values are:

      * true
      * false
    </ParamField>

    <ParamField body="strategy_definition">
      The [tier strategy](../../rm/concepts/#tier-strategies) for the table and its columns.
    </ParamField>

    <ParamField body="compression_codec">
      The default [compression codec](../../concepts/column_compression/) for this table's columns.
    </ParamField>
  </Expandable>
</ParamField>

<ParamField body="options" type="map of string to strings">
  Optional parameters.

  The default value is an empty map ( \{} ).

  <Expandable title="options">
    <ParamField body="bad_record_table_name">
      Name of a table to which records that were rejected are written. The bad-record-table has the following columns: line\_number (long), line\_rejected (string), error\_message (string).  When *error\_handling* is *abort*, bad records table is not populated.
    </ParamField>

    <ParamField body="bad_record_table_limit">
      A positive integer indicating the maximum number of records that can be written to the bad-record-table.

      The default value is `10000`.
    </ParamField>

    <ParamField body="bad_record_table_limit_per_input">
      For subscriptions, a positive integer indicating the maximum number of records that can be written to the bad-record-table per file/payload. Default value will be *bad\_record\_table\_limit* and total size of the table per rank is limited to *bad\_record\_table\_limit*.
    </ParamField>

    <ParamField body="batch_size">
      Number of records to insert per batch when inserting data.

      The default value is `50000`.
    </ParamField>

    <ParamField body="column_formats">
      For each target column specified, applies the column-property-bound format to the source data loaded into that column.  Each column format will contain a mapping of one or more of its column properties to an appropriate format for each property.  Currently supported column properties include date, time, and datetime. The parameter value must be formatted as a JSON string of maps of column names to maps of column properties to their corresponding column formats, e.g., '\{ "order\_date" : \{ "date" : "%Y.%m.%d" }, "order\_time" : \{ "time" : "%H:%M:%S" } }'.

      See *default\_column\_formats* for valid format syntax.
    </ParamField>

    <ParamField body="columns_to_load">
      Specifies a comma-delimited list of columns from the source data to load. If more than one file is being loaded, this list applies to all files.

      Column numbers can be specified discretely or as a range.  For example, a value of '5,7,1..3' will insert values from the fifth column in the source data into the first column in the target table, from the seventh column in the source data into the second column in the target table, and from the first through third columns in the source data into the third through fifth columns in the target table.

      If the source data contains a header, column names matching the file header names may be provided instead of column numbers.  If the target table doesn't exist, the table will be created with the columns in this order.  If the target table does exist with columns in a different order than the source data, this list can be used to match the order of the target table.  For example, a value of 'C, B, A' will create a three column table with column C, followed by column B, followed by column A; or will insert those fields in that order into a table created with columns in that order.  If the target table exists, the column names must match the source data field names for a name-mapping to be successful.

      Mutually exclusive with *columns\_to\_skip*.
    </ParamField>

    <ParamField body="columns_to_skip">
      Specifies a comma-delimited list of columns from the source data to skip. Mutually exclusive with *columns\_to\_load*.
    </ParamField>

    <ParamField body="compression_type">
      Source data compression type.

      The default value is `auto`.

      * **none**: No compression.
      * **auto**: Auto detect compression type.
      * **gzip**: gzip file compression.
      * **bzip2**: bzip2 file compression.
    </ParamField>

    <ParamField body="datasource_name">
      Name of an existing external data source from which data file(s) specified in input parameter *filepaths* will be loaded.
    </ParamField>

    <ParamField body="default_column_formats">
      Specifies the default format to be applied to source data loaded into columns with the corresponding column property.  Currently supported column properties include date, time, and datetime.  This default column-property-bound format can be overridden by specifying a column property and format for a given target column in *column\_formats*. For each specified annotation, the format will apply to all columns with that annotation unless a custom *column\_formats* for that annotation is specified.

      The parameter value must be formatted as a JSON string that is a map of column properties to their respective column formats, e.g., '\{ "date" : "%Y.%m.%d", "time" : "%H:%M:%S" }'.  Column formats are specified as a string of control characters and plain text. The supported control characters are 'Y', 'm', 'd', 'H', 'M', 'S', and 's', which follow the Linux 'strptime()' specification, as well as 's', which specifies seconds and fractional seconds (though the fractional component will be truncated past milliseconds).

      Formats for the 'date' annotation must include the 'Y', 'm', and 'd' control characters. Formats for the 'time' annotation must include the 'H', 'M', and either 'S' or 's' (but not both) control characters. Formats for the 'datetime' annotation meet both the 'date' and 'time' control character requirements. For example, '\{"datetime" : "%m/%d/%Y %H:%M:%S" }' would be used to interpret text as "05/04/2000 12:12:11".
    </ParamField>

    <ParamField body="datalake_catalog">
      Name of an existing datalake(iceberg) catalog used in loading files.
    </ParamField>

    <ParamField body="datalake_path">
      Path of datalake(iceberg) object.
    </ParamField>

    <ParamField body="datalake_snapshot">
      Snapshot ID of datalake(iceberg) object.
    </ParamField>

    <ParamField body="error_handling">
      Specifies how errors should be handled upon insertion.

      The default value is `abort`.

      * **permissive**: Records with missing columns are populated with nulls if possible; otherwise, the malformed records are skipped.
      * **ignore\_bad\_records**: Malformed records are skipped.
      * **abort**: Stops current insertion and aborts entire operation when an error is encountered.  Primary key collisions are considered abortable errors in this mode.
    </ParamField>

    <ParamField body="external_table_type">
      Specifies whether the external table holds a local copy of the external data.

      The default value is `materialized`.

      * **materialized**: Loads a copy of the external data into the database, refreshed on demand.
      * **logical**: External data will not be loaded into the database; the data will be retrieved from the source upon servicing each query against the external table.
    </ParamField>

    <ParamField body="file_type">
      Specifies the type of the file(s) whose records will be inserted.

      The default value is `delimited_text`.

      * **avro**: Avro file format.
      * **delimited\_text**: Delimited text file format; e.g., CSV, TSV, PSV, etc.
      * **gdb**: Esri/GDB file format.
      * **json**: JSON file format.
      * **parquet**: Apache Parquet file format.
      * **shapefile**: ShapeFile file format.
    </ParamField>

    <ParamField body="flatten_columns">
      Specifies how to handle nested columns.

      The default value is `false`.

      * **true**: Break up nested columns to multiple columns.
      * **false**: Treat nested columns as JSON columns instead of flattening.
    </ParamField>

    <ParamField body="gdal_configuration_options">
      Comma separated list of gdal conf options, for the specific requests: key=value.
    </ParamField>

    <ParamField body="ignore_existing_pk">
      Specifies the record collision error-suppression policy for inserting into a table with a [primary key](../../concepts/tables/#primary-keys), only used when not in upsert mode (upsert mode is disabled when *update\_on\_existing\_pk* is *false*).  If set to *true*, any record being inserted that is rejected for having primary key values that match those of an existing table record will be ignored with no error generated.  If *false*, the rejection of any record for having primary key values matching an existing record will result in an error being reported, as determined by *error\_handling*.  If the specified table does not have a primary key or if upsert mode is in effect (*update\_on\_existing\_pk* is *true*), then this option has no effect.

      The default value is `false`.

      * **true**: Ignore new records whose primary key values collide with those of existing records.
      * **false**: Treat as errors any new records whose primary key values collide with those of existing records.
    </ParamField>

    <ParamField body="ingestion_mode">
      Whether to do a full load, dry run, or perform a type inference on the source data.

      The default value is `full`.

      * **full**: Run a type inference on the source data (if needed) and ingest.
      * **dry\_run**: Does not load data, but walks through the source data and determines the number of valid records, taking into account the current mode of *error\_handling*.
      * **type\_inference\_only**: Infer the type of the source data and return, without ingesting any data.  The inferred type is returned in the response.
    </ParamField>

    <ParamField body="jdbc_fetch_size">
      The JDBC fetch size, which determines how many rows to fetch per round trip.

      The default value is `50000`.
    </ParamField>

    <ParamField body="kafka_consumers_per_rank">
      Number of Kafka consumer threads per rank (valid range 1-6).

      The default value is `1`.
    </ParamField>

    <ParamField body="kafka_group_id">
      The group id to be used when consuming data from a Kafka topic (valid only for Kafka datasource subscriptions).
    </ParamField>

    <ParamField body="kafka_offset_reset_policy">
      Policy to determine whether the Kafka data consumption starts either at earliest offset or latest offset.

      The default value is `earliest`.

      The supported values are:

      * earliest
      * latest
    </ParamField>

    <ParamField body="kafka_optimistic_ingest">
      Enable optimistic ingestion where Kafka topic offsets and table data are committed independently to achieve parallelism.

      The default value is `false`.

      The supported values are:

      * true
      * false
    </ParamField>

    <ParamField body="kafka_subscription_cancel_after">
      Sets the Kafka subscription lifespan (in minutes). Expired subscription will be cancelled automatically.
    </ParamField>

    <ParamField body="kafka_type_inference_fetch_timeout">
      Maximum time to collect Kafka messages before type inferencing on the set of them.
    </ParamField>

    <ParamField body="layer">
      Geo files layer(s) name(s): comma separated.
    </ParamField>

    <ParamField body="loading_mode">
      Scheme for distributing the extraction and loading of data from the source data file(s). This option applies only when loading files that are local to the database.

      The default value is `head`.

      * **head**: The head node loads all data. All files must be available to the head node.
      * **distributed\_shared**: The head node coordinates loading data by worker processes across all nodes from shared files available to all workers. NOTE: Instead of existing on a shared source, the files can be duplicated on a source local to each host to improve performance, though the files must appear as the same data set from the perspective of all hosts performing the load.
      * **distributed\_local**: A single worker process on each node loads all files that are available to it. This option works best when each worker loads files from its own file system, to maximize performance. In order to avoid data duplication, either each worker performing the load needs to have visibility to a set of files unique to it (no file is visible to more than one node) or the target table needs to have a primary key (which will allow the worker to automatically deduplicate data). NOTE: If the target table doesn't exist, the table structure will be determined by the head node. If the head node has no files local to it, it will be unable to determine the structure and the request will fail. If the head node is configured to have no worker processes, no data strictly accessible to the head node will be loaded.
    </ParamField>

    <ParamField body="local_time_offset">
      Apply an offset to Avro local timestamp columns.
    </ParamField>

    <ParamField body="max_records_to_load">
      Limit the number of records to load in this request: if this number is larger than *batch\_size*, then the number of records loaded will be limited to the next whole number of *batch\_size* (per working thread).
    </ParamField>

    <ParamField body="num_tasks_per_rank">
      Number of tasks for reading file per rank. Default will be system configuration parameter, external\_file\_reader\_num\_tasks.
    </ParamField>

    <ParamField body="poll_interval">
      If *true*, the number of seconds between attempts to load external files into the table.  If zero, polling will be continuous as long as data is found.  If no data is found, the interval will steadily increase to a maximum of 60 seconds.

      The default value is `0`.
    </ParamField>

    <ParamField body="primary_keys">
      Comma separated list of column names to set as primary keys, when not specified in the type.
    </ParamField>

    <ParamField body="refresh_method">
      Method by which the table can be refreshed from its source data.

      The default value is `manual`.

      * **manual**: Refresh only occurs when manually requested by invoking the refresh action of [/alter/table](/content/api/rest/alter_table_rest) on this table.
      * **on\_start**: Refresh table on database startup and when manually requested by invoking the refresh action of [/alter/table](/content/api/rest/alter_table_rest) on this table.
    </ParamField>

    <ParamField body="schema_registry_connection_retries">
      Confluent Schema registry connection timeout (in secs).
    </ParamField>

    <ParamField body="schema_registry_connection_timeout">
      Confluent Schema registry connection timeout (in secs).
    </ParamField>

    <ParamField body="schema_registry_max_consecutive_connection_failures">
      Max records to skip due to SR connection failures, before failing.
    </ParamField>

    <ParamField body="max_consecutive_invalid_schema_failure">
      Max records to skip due to schema related errors, before failing.
    </ParamField>

    <ParamField body="schema_registry_schema_name">
      Name of the Avro schema in the schema registry to use when reading Avro records.
    </ParamField>

    <ParamField body="shard_keys">
      Comma separated list of column names to set as shard keys, when not specified in the type.
    </ParamField>

    <ParamField body="skip_lines">
      Skip a number of lines from the beginning of the file.
    </ParamField>

    <ParamField body="start_offsets">
      Starting offsets by partition to fetch from kafka. A comma separated list of partition:offset pairs.
    </ParamField>

    <ParamField body="subscribe">
      Continuously poll the data source to check for new data and load it into the table.

      The default value is `false`.

      The supported values are:

      * true
      * false
    </ParamField>

    <ParamField body="table_insert_mode">
      Insertion scheme to use when inserting records from multiple shapefiles.

      The default value is `single`.

      * **single**: Insert all records into a single table.
      * **table\_per\_file**: Insert records from each file into a new table corresponding to that file.
    </ParamField>

    <ParamField body="text_comment_string">
      Specifies the character string that should be interpreted as a comment line prefix in the source data.  All lines in the data starting with the provided string are ignored.

      For *delimited\_text* *file\_type* only.

      The default value is `#`.
    </ParamField>

    <ParamField body="text_delimiter">
      Specifies the character delimiting field values in the source data and field names in the header (if present).

      For *delimited\_text* *file\_type* only.

      The default value is `,`.
    </ParamField>

    <ParamField body="text_escape_character">
      Specifies the character that is used to escape other characters in the source data.

      An 'a', 'b', 'f', 'n', 'r', 't', or 'v' preceded by an escape character will be interpreted as the ASCII bell, backspace, form feed, line feed, carriage return, horizontal tab, and vertical tab, respectively.  For example, the escape character followed by an 'n' will be interpreted as a newline within a field value.

      The escape character can also be used to escape the quoting character, and will be treated as an escape character whether it is within a quoted field value or not.

      For *delimited\_text* *file\_type* only.
    </ParamField>

    <ParamField body="text_has_header">
      Indicates whether the source data contains a header row.

      For *delimited\_text* *file\_type* only.

      The default value is `true`.

      The supported values are:

      * true
      * false
    </ParamField>

    <ParamField body="text_header_property_delimiter">
      Specifies the delimiter for [column properties](../../concepts/types/#column-properties) in the header row (if present).  Cannot be set to same value as *text\_delimiter*.

      For *delimited\_text* *file\_type* only.

      The default value is `|`.
    </ParamField>

    <ParamField body="text_null_string">
      Specifies the character string that should be interpreted as a null value in the source data.

      For *delimited\_text* *file\_type* only.

      The default value is `\N`.
    </ParamField>

    <ParamField body="text_quote_character">
      Specifies the character that should be interpreted as a field value quoting character in the source data.  The character must appear at beginning and end of field value to take effect. Delimiters within quoted fields are treated as literals and not delimiters. Within a quoted field, two consecutive quote characters will be interpreted as a single literal quote character, effectively escaping it.  To not have a quote character, specify an empty string.

      For *delimited\_text* *file\_type* only.

      The default value is `"`.
    </ParamField>

    <ParamField body="text_search_columns">
      Add 'text\_search' property to internally inferenced string columns. Comma separated list of column names or '\*' for all columns. To add 'text\_search' property only to string columns greater than or equal to a minimum size, also set the *text\_search\_min\_column\_length*
    </ParamField>

    <ParamField body="text_search_min_column_length">
      Set the minimum column size for strings to apply the 'text\_search' property to. Used only when *text\_search\_columns* has a value.
    </ParamField>

    <ParamField body="trim_space">
      If set to *true*, remove leading or trailing space from fields.

      The default value is `false`.

      The supported values are:

      * true
      * false
    </ParamField>

    <ParamField body="truncate_strings">
      If set to *true*, truncate string values that are longer than the column's type size.

      The default value is `false`.

      The supported values are:

      * true
      * false
    </ParamField>

    <ParamField body="truncate_table">
      If set to *true*, truncates the table specified by input parameter *table\_name* prior to loading the file(s).

      The default value is `false`.

      The supported values are:

      * true
      * false
    </ParamField>

    <ParamField body="type_inference_max_records_read" />

    <ParamField body="type_inference_mode">
      Optimize type inferencing for either speed or accuracy.

      The default value is `speed`.

      * **accuracy**: Scans data to get exactly-typed and sized columns for all data scanned.
      * **speed**: Scans data and picks the widest possible column types so that 'all' values will fit with minimum data scanned.
    </ParamField>

    <ParamField body="remote_query">
      Remote SQL query from which data will be sourced.
    </ParamField>

    <ParamField body="remote_query_filter_column">
      Name of column to be used for splitting *remote\_query* into multiple sub-queries using the data distribution of given column.
    </ParamField>

    <ParamField body="remote_query_increasing_column">
      Column on subscribed remote query result that will increase for new records (e.g., TIMESTAMP).
    </ParamField>

    <ParamField body="remote_query_partition_column">
      Alias name for *remote\_query\_filter\_column*.
    </ParamField>

    <ParamField body="update_on_existing_pk">
      Specifies the record collision policy for inserting into a table with a [primary key](../../concepts/tables/#primary-keys). If set to *true*, any existing table record with primary key values that match those of a record being inserted will be replaced by that new record (the new data will be 'upserted'). If set to *false*, any existing table record with primary key values that match those of a record being inserted will remain unchanged, while the new record will be rejected and the error handled as determined by *ignore\_existing\_pk* and *error\_handling*.  If the specified table does not have a primary key, then this option has no effect.

      The default value is `false`.

      * **true**: Upsert new records when primary keys match existing records.
      * **false**: Reject new records when primary keys match existing records.
    </ParamField>
  </Expandable>
</ParamField>

## Output Parameter Description

The Kinetica server embeds the endpoint response inside a standard response structure which contains status information and the actual response to the query.  Here is a description of the various fields of the wrapper:

<ResponseField name="status" type="String">
  'OK' or 'ERROR'
</ResponseField>

<ResponseField name="message" type="String">
  Empty if success or an error message
</ResponseField>

<ResponseField name="data_type" type="String">
  'create\_table\_external\_response' or 'none' in case of an error
</ResponseField>

<ResponseField name="data" type="String">
  Empty string
</ResponseField>

<ResponseField name="data_str" type="JSON or String">
  This embedded JSON represents the result of the /create/table/external endpoint:

  <Expandable title="data_str">
    <ResponseField name="table_name" type="string">
      Value of input parameter *table\_name*.
    </ResponseField>

    <ResponseField name="type_id" type="string">
      ID of the currently registered table structure [type](../../concepts/types/) for this external table.
    </ResponseField>

    <ResponseField name="type_definition" type="string">
      A JSON string describing the columns of the created external table.
    </ResponseField>

    <ResponseField name="type_label" type="string">
      The user-defined description associated with the table's structure.
    </ResponseField>

    <ResponseField name="type_properties" type="map of string to arrays of strings">
      A mapping of each external table column name to an array of column properties associated with that column.
    </ResponseField>

    <ResponseField name="count_inserted" type="long">
      Number of records inserted into the external table.
    </ResponseField>

    <ResponseField name="count_skipped" type="long">
      Number of records skipped, when not running in *abort* error handling mode.
    </ResponseField>

    <ResponseField name="count_updated" type="long">
      \[Not yet implemented]  Number of records updated within the external table.
    </ResponseField>

    <ResponseField name="info" type="map of string to strings">
      Additional information.
    </ResponseField>

    <ResponseField name="files" type="array of strings" />
  </Expandable>

  Empty string in case of an error.
</ResponseField>