描述資料表 - Amazon Redshift

Amazon Redshift 將不再支援從修補程式 198 開始建立新的 Python UDFs。現有 Python UDF 將繼續正常運作至 2026 年 6 月 30 日。如需詳細資訊，請參閱部落格文章。

本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。

描述資料表

若要取得描述資料表的中繼資料，請使用 aws redshift-data describe-tableAWS CLI命令。

下列AWS CLI命令會對叢集執行 SQL 陳述式，並傳回描述資料表的中繼資料。此範例使用 AWS Secrets Manager身分驗證方法。


aws redshift-data describe-table  
    --cluster-identifier mycluster-test 
    --database dev 
    --schema information_schema 
    --table sql_features 
    --secret-arn arn:aws:secretsmanager:us-west-2:123456789012:secret:myuser-secret-hKgPWn

以下是回應的範例。

{
    "ColumnList": [
        {
            "isCaseSensitive": false,
            "isCurrency": false,
            "isSigned": false,
            "length": 2147483647,
            "name": "feature_id",
            "nullable": 1,
            "precision": 2147483647,
            "scale": 0,
            "schemaName": "information_schema",
            "tableName": "sql_features",
            "typeName": "character_data"
        },
        {
            "isCaseSensitive": false,
            "isCurrency": false,
            "isSigned": false,
            "length": 2147483647,
            "name": "feature_name",
            "nullable": 1,
            "precision": 2147483647,
            "scale": 0,
            "schemaName": "information_schema",
            "tableName": "sql_features",
            "typeName": "character_data"
        }     
    ]
}

下列AWS CLI命令會對描述資料表的叢集執行 SQL 陳述式。此範例使用暫時憑證身分驗證方法。


aws redshift-data describe-table 
    --db-user myuser 
    --cluster-identifier mycluster-test 
    --database dev 
    --schema information_schema 
    --table sql_features

以下是回應的範例。

{
    "ColumnList": [
        {
            "isCaseSensitive": false,
            "isCurrency": false,
            "isSigned": false,
            "length": 2147483647,
            "name": "feature_id",
            "nullable": 1,
            "precision": 2147483647,
            "scale": 0,
            "schemaName": "information_schema",
            "tableName": "sql_features",
            "typeName": "character_data"
        },
        {
            "isCaseSensitive": false,
            "isCurrency": false,
            "isSigned": false,
            "length": 2147483647,
            "name": "feature_name",
            "nullable": 1,
            "precision": 2147483647,
            "scale": 0,
            "schemaName": "information_schema",
            "tableName": "sql_features",
            "typeName": "character_data"
        },
        {
            "isCaseSensitive": false,
            "isCurrency": false,
            "isSigned": false,
            "length": 2147483647,
            "name": "sub_feature_id",
            "nullable": 1,
            "precision": 2147483647,
            "scale": 0,
            "schemaName": "information_schema",
            "tableName": "sql_features",
            "typeName": "character_data"
        },
        {
            "isCaseSensitive": false,
            "isCurrency": false,
            "isSigned": false,
            "length": 2147483647,
            "name": "sub_feature_name",
            "nullable": 1,
            "precision": 2147483647,
            "scale": 0,
            "schemaName": "information_schema",
            "tableName": "sql_features",
            "typeName": "character_data"
        },
        {
            "isCaseSensitive": false,
            "isCurrency": false,
            "isSigned": false,
            "length": 2147483647,
            "name": "is_supported",
            "nullable": 1,
            "precision": 2147483647,
            "scale": 0,
            "schemaName": "information_schema",
            "tableName": "sql_features",
            "typeName": "character_data"
        },
        {
            "isCaseSensitive": false,
            "isCurrency": false,
            "isSigned": false,
            "length": 2147483647,
            "name": "is_verified_by",
            "nullable": 1,
            "precision": 2147483647,
            "scale": 0,
            "schemaName": "information_schema",
            "tableName": "sql_features",
            "typeName": "character_data"
        },
        {
            "isCaseSensitive": false,
            "isCurrency": false,
            "isSigned": false,
            "length": 2147483647,
            "name": "comments",
            "nullable": 1,
            "precision": 2147483647,
            "scale": 0,
            "schemaName": "information_schema",
            "tableName": "sql_features",
            "typeName": "character_data"
        }
    ]
}