我一直在尝试使用python API在我们的数据目录中创建一个表。遵循here和here中发布的API文档。我可以理解。但是,我需要不理解如何在创建表时声明字段结构,因为当我查看表here的存储定义时,对于如何为我的表定义这种类型的列有任何解释表。此外。我看不到覆盖的表的分类属性。也许在物业上?我已将boto3 documentation用于此示例
代码:
import boto3
client = boto3.client(service_name='glue', region_name='us-east-1')
response = client.create_table(
DatabaseName='dbname',
TableInput={
'Name': 'tbname',
'Description': 'tb description',
'Owner': 'I'm',
'StorageDescriptor': {
'Columns': [
{ 'Name': 'agents', 'Type': 'struct','Comment': 'from deserializer' },
{ 'Name': 'conference_sid', 'Type': 'string','Comment': 'from deserializer' },
{ 'Name': 'call_sid', 'Type': 'string','Comment': 'from deserializer' }
] ,
'Location': 's3://bucket/location/',
'InputFormat': 'org.apache.hadoop.mapred.TextInputFormat',
'OutputFormat': 'org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat',
'Compressed': False,
'SerdeInfo': { 'SerializationLibrary': 'org.openx.data.jsonserde.JsonSerDe'}
},
'TableType' : "EXTERNAL_TABLE"} )
答案 0 :(得分:0)
找到这篇文章是因为我遇到了同样的问题,并最终找到了解决方案,因此您可以按以下类型进行操作:
array<struct<id:string,timestamp:bigint,message:string>>
我在使用AWS控制台并单击通过爬网程序创建的现有表的数据类型时发现了此“提示”。它提示:
An ARRAY of scalar type as a top - level column.
ARRAY <STRING>
An ARRAY with elements of complex type (STRUCT).
ARRAY < STRUCT <
place: STRING,
start_year: INT
>>
An ARRAY as a field (CHILDREN) within a STRUCT. (The STRUCT is inside another ARRAY, because it is rare for a STRUCT to be a top-level column.)
ARRAY < STRUCT <
spouse: STRING,
children: ARRAY <STRING>
>>
A STRUCT as the element type of an ARRAY.
ARRAY < STRUCT <
street: STRING,
city: STRING,
country: STRING
>>