物化类型

models:
  - name: table_column_configs
    description: 'Testing column-level configurations'
    config:
      contract:
        enforced: true
    columns:
      - name: ts
        data_type: timestamp
        codec: ZSTD
      - name: x
        data_type: UInt8
        ttl: ts + INTERVAL 1 DAY

{{
    config(
        materialized="materialized_view",
        engine="AggregatingMergeTree",
        order_by=["event_type"],
    )
}}

select
  -- event_type may be infered as a String but we may prefer LowCardinality(String):
  CAST(event_type, 'LowCardinality(String)') as event_type,
  -- countState() may be infered as `AggregateFunction(count)` but we may prefer to change the type of the argument used:
  CAST(countState(), 'AggregateFunction(count, UInt32)') as response_count,
  -- maxSimpleState() may be infered as `SimpleAggregateFunction(max, String)` but we may prefer to also change the type of the argument used:
  CAST(maxSimpleState(event_type), 'SimpleAggregateFunction(max, LowCardinality(String))') as max_event_type
from {{ ref('user_events') }}
group by event_type

models:
  <resource-path>:
    +materialized: view

{{ config(materialized = "view") }}

models:
  <resource-path>:
    +materialized: table
    +order_by: [ <column-name>, ... ]
    +engine: <engine-type>
    +partition_by: [ <column-name>, ... ]

{{ config(
    materialized = "table",
    engine = "<engine-type>",
    order_by = [ "<column-name>", ... ],
    partition_by = [ "<column-name>", ... ],
      ...
    ]
) }}

{{ config(
        materialized='table',
        indexes=[{
          'name': 'your_index_name',
          'definition': 'your_column TYPE minmax GRANULARITY 2'
        }]
) }}

{{ config(
       materialized='table',
       projections=[
           {
               'name': 'your_projection_name',
               'query': 'SELECT department, avg(age) AS avg_age GROUP BY department'
           }
       ]
) }}

{{ config(
       materialized='table',
       projections=[
           {
               'name': 'proj_by_age',
               'index': 'age'
           }
       ]
) }}

{{ config(
       materialized='table',
       projections=[
           {
               'name': 'proj_by_dept_age',
               'index': ['department', 'age']
           }
       ]
) }}

models:
  <resource-path>:
    +materialized: incremental
    +order_by: [ <column-name>, ... ]
    +engine: <engine-type>
    +partition_by: [ <column-name>, ... ]
    +unique_key: [ <column-name>, ... ]
    +inserts_only: [ True|False ]

{{ config(
    materialized = "incremental",
    engine = "<engine-type>",
    order_by = [ "<column-name>", ... ],
    partition_by = [ "<column-name>", ... ],
    unique_key = [ "<column-name>", ... ],
    inserts_only = [ True|False ],
      ...
    ]
) }}

{{ config(
       materialized='dictionary',
       fields=[
           ('id', 'UInt64'),
           ('name', 'String'),
       ],
       primary_key='id',
       layout='HASHED()',
       lifetime='MIN 0 MAX 300'
) }}

select id, name from {{ source('raw', 'people') }}

{{ config(
       materialized='dictionary',
       fields=[
           ('LocationID', 'UInt16 DEFAULT 0'),
           ('Borough', 'String'),
           ('Zone', 'String'),
       ],
       primary_key='LocationID',
       layout='HASHED()',
       lifetime='MIN 0 MAX 0',
       source_type='http',
       url='https://datasets-documentation.s3.eu-west-3.amazonaws.com/nyc-taxi/taxi_zone_lookup.csv',
       format='CSVWithNames'
) }}

select 1

{{
    config(
        materialized='distributed_table',
        order_by='id, created_at',
        sharding_key='cityHash64(id)',
        engine='ReplacingMergeTree'
    )
}}

select id, created_at, item
from {{ source('db', 'table') }}

CREATE TABLE db.table_local on cluster cluster (
    `id` UInt64,
    `created_at` DateTime,
    `item` String
)
    ENGINE = ReplacingMergeTree
    ORDER BY (id, created_at);

CREATE TABLE db.table on cluster cluster (
    `id` UInt64,
    `created_at` DateTime,
    `item` String
)
    ENGINE = Distributed ('cluster', 'db', 'table_local', cityHash64(id));

{{
    config(
        materialized='distributed_incremental',
        engine='MergeTree',
        incremental_strategy='append',
        unique_key='id,created_at'
    )
}}

select id, created_at, item
from {{ source('db', 'table') }}

CREATE TABLE db.table_local on cluster cluster (
    `id` UInt64,
    `created_at` DateTime,
    `item` String
)
    ENGINE = MergeTree;

CREATE TABLE db.table on cluster cluster (
    `id` UInt64,
    `created_at` DateTime,
    `item` String
)
    ENGINE = Distributed ('cluster', 'db', 'table_local', cityHash64(id));

snapshots:
  - name: <snapshot-name>
    relation: ref('<model-name>')
    config:
      unique_key: <column-name>
      strategy: timestamp             # or check
      updated_at: <column-name>       # timestamp strategy
      # check_cols: [<column-name>, ...]  # check strategy

{% snapshot <snapshot-name> %}
{{
   config(
     unique_key = "<column-name>",
     strategy = "<strategy>",
     updated_at = "<updated-at-column-name>",
   )
}}
select * from {{ ref('<model-name>') }}
{% endsnapshot %}