查询表描述信息

前提条件

• 已初始化Client。具体操作，请参见初始化。

• 已创建数据表。

参数

示例

以下示例用于查询数据表的表结构信息、可选配置信息和预留吞吐量信息。

private static void describeTable(SyncClient client) {
    //设置数据表名称。
    DescribeTableRequest request = new DescribeTableRequest("<TABLE_NAME>");
    DescribeTableResponse response = client.describeTable(request);
    TableMeta tableMeta = response.getTableMeta();
    System.out.println("表的名称：" + tableMeta.getTableName());
    System.out.println("表的主键：");
    for (PrimaryKeySchema primaryKeySchema : tableMeta.getPrimaryKeyList()) {
        System.out.println(primaryKeySchema);
    }
    TableOptions tableOptions = response.getTableOptions();
    System.out.println("表的TTL:" + tableOptions.getTimeToLive());
    System.out.println("表的MaxVersions:" + tableOptions.getMaxVersions());
    //只能查看加密表的加密配置信息。非加密表无此配置项。
    //System.out.println("表的加密配置：" + response.getSseDetails());
    ReservedThroughputDetails reservedThroughputDetails = response.getReservedThroughputDetails();
    System.out.println("表的预留读吞吐量："
            + reservedThroughputDetails.getCapacityUnit().getReadCapacityUnit());
    System.out.println("表的预留写吞吐量："
            + reservedThroughputDetails.getCapacityUnit().getWriteCapacityUnit());
}