[ aws . athena ]

get-table-metadata

Description

Returns table metadata for the specified catalog, database, and table.

See also: AWS API Documentation

See ‘aws help’ for descriptions of global parameters.

Synopsis

  get-table-metadata
--catalog-name <value>
--database-name <value>
--table-name <value>
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]

Options

--catalog-name (string)

The name of the data catalog that contains the database and table metadata to return.

--database-name (string)

The name of the database that contains the table metadata to return.

--table-name (string)

The name of the table for which metadata is returned.

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

See ‘aws help’ for descriptions of global parameters.

Examples

To return metadata information about a table

The following get-table-metadata example returns metadata information about the counties table, including including column names and their datatypes, from the sampledb database of the AwsDataCatalog data catalog.

aws athena get-table-metadata \
    --catalog-name AwsDataCatalog \
    --database-name sampledb \
    --table-name counties

Output:

{
    "TableMetadata": {
        "Name": "counties",
        "CreateTime": 1593559968.0,
        "LastAccessTime": 0.0,
        "TableType": "EXTERNAL_TABLE",
        "Columns": [
            {
                "Name": "name",
                "Type": "string",
                "Comment": "from deserializer"
            },
            {
                "Name": "boundaryshape",
                "Type": "binary",
                "Comment": "from deserializer"
            },
            {
                "Name": "motto",
                "Type": "string",
                "Comment": "from deserializer"
            },
            {
                "Name": "population",
                "Type": "int",
                "Comment": "from deserializer"
            }
        ],
        "PartitionKeys": [],
        "Parameters": {
            "EXTERNAL": "TRUE",
            "inputformat": "com.esri.json.hadoop.EnclosedJsonInputFormat",
            "location": "s3://awsdoc-example-bucket/json",
            "outputformat": "org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat",
            "serde.param.serialization.format": "1",
            "serde.serialization.lib": "com.esri.hadoop.hive.serde.JsonSerde",
            "transient_lastDdlTime": "1593559968"
        }
    }
}

For more information, see Showing Table Details: get-table-metadata in the Amazon Athena User Guide.

Output

TableMetadata -> (structure)

An object that contains table metadata.

Name -> (string)

The name of the table.

CreateTime -> (timestamp)

The time that the table was created.

LastAccessTime -> (timestamp)

The last time the table was accessed.

TableType -> (string)

The type of table. In Athena, only EXTERNAL_TABLE is supported.

Columns -> (list)

A list of the columns in the table.

(structure)

Contains metadata for a column in a table.

Name -> (string)

The name of the column.

Type -> (string)

The data type of the column.

Comment -> (string)

Optional information about the column.

PartitionKeys -> (list)

A list of the partition keys in the table.

(structure)

Contains metadata for a column in a table.

Name -> (string)

The name of the column.

Type -> (string)

The data type of the column.

Comment -> (string)

Optional information about the column.

Parameters -> (map)

A set of custom key/value pairs for table properties.

key -> (string)

value -> (string)