Week 1 project

greenery/.gitignore

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+
+target/
+dbt_packages/
+logs/

greenery/README.md

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+Welcome to your new dbt project!
+
+### Using the starter project
+
+Try running the following commands:
+- dbt run
+- dbt test
+
+
+### Resources:
+- Learn more about dbt [in the docs](https://docs.getdbt.com/docs/introduction)
+- Check out [Discourse](https://discourse.getdbt.com/) for commonly asked questions and answers
+- Join the [chat](https://community.getdbt.com/) on Slack for live discussions and support
+- Find [dbt events](https://events.getdbt.com) near you
+- Check out [the blog](https://blog.getdbt.com/) for the latest news on dbt's development and best practices

greenery/analyses/avg_order_delivery_time.sql

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+with delivered_orders as (
+
+    select
+        created_at_utc,
+        delivered_at_utc
+    from
+        {{ ref('stg_postgres__orders') }}
+    where
+        order_status = 'delivered'
+),
+
+order_length as (
+
+    select
+        datediff(hour, created_at_utc, delivered_at_utc) as order_length_hours
+    from
+        delivered_orders
+
+)
+
+select 
+    round(avg(order_length_hours), 2) as avg_order_delivered_hours,
+    round(avg(order_length_hours / 24), 2) as avg_order_delivered_days
+from
+    order_length

greenery/analyses/avg_orders_per_hour.sql

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+with orders as (
+
+    select
+        created_at_utc,
+        order_id
+    from
+        {{ ref('stg_postgres__orders') }}
+
+),
+
+order_hours as (
+
+    select
+        date_part(hour, created_at_utc) as order_hour,
+        count(order_id) as order_count
+    from
+        orders
+    group by 1
+)
+
+select 
+    round(avg(order_count), 0) as avg_orders_per_hour 
+from 
+    order_hours

greenery/analyses/unique_sessions_per_hour.sql

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+with events as (
+
+    select
+        session_id,
+        created_at_utc,
+        date_part(hour, created_at_utc) as event_hour
+    from
+        {{ ref('stg_postgres__events') }}
+
+),
+
+sessions_hours as (
+
+    select
+        event_hour,
+        count(distinct session_id) as unique_sessions
+    from
+        events
+    group by 1
+    order by 1
+
+
+)
+
+select avg(unique_sessions) from sessions_hours
+

greenery/analyses/user_count.sql

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+with users as (
+
+    select
+        user_id
+    from
+        {{ ref('stg_postgres__users') }}
+
+)
+
+select
+    count(user_id)
+from
+    users

greenery/analyses/users_per_order_quantity.sql

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+with orders as (
+
+    select
+        user_id,
+        order_id
+    from
+        {{ ref('stg_postgres__orders') }}
+
+),
+
+orders_per_user as (
+
+    select
+        user_id,
+        count(order_id) as n_orders,
+        case
+            when
+                n_orders = 1 then 'one_order'
+            when 
+                n_orders = 2 then 'two_orders'
+            else
+                '3+_orders'
+        end as n_orders_bucket
+    from
+        orders
+    group by 1
+
+)
+
+select 
+    n_orders_bucket,
+    count(user_id) as n_users
+from
+    orders_per_user
+group by 1

greenery/dbt_project.yml

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+
+# Name your project! Project names should contain only lowercase characters
+# and underscores. A good package name should reflect your organization's
+# name or the intended use of these models
+name: 'greenery'
+version: '1.0.0'
+config-version: 2
+
+# This setting configures which "profile" dbt uses for this project.
+profile: 'greenery'
+
+# These configurations specify where dbt should look for different types of files.
+# The `model-paths` config, for example, states that models in this project can be
+# found in the "models/" directory. You probably won't need to change these!
+model-paths: ["models"]
+analysis-paths: ["analyses"]
+test-paths: ["tests"]
+seed-paths: ["seeds"]
+macro-paths: ["macros"]
+snapshot-paths: ["snapshots"]
+
+target-path: "target"  # directory which will store compiled SQL files
+clean-targets:         # directories to be removed by `dbt clean`
+  - "target"
+  - "dbt_packages"
+
+
+# Configuring models
+# Full documentation: https://docs.getdbt.com/docs/configuring-models
+
+# In this example config, we tell dbt to build all models in the example/ directory
+# as tables. These settings can be overridden in the individual model files
+# using the `{{ config(...) }}` macro.
+models:
+  greenery:
+    # Config indicated by + and applies to all files under models/example/
+    example:
+      +materialized: view
+    staging:
+      +materialized: view

greenery/macros/lbs_to_kgs.sql

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+{% macro lbs_to_kgs(column_name, precision=2) %}
+    ROUND(
+       (CASE WHEN {{ column_name }} = -99 THEN NULL ELSE {{ column_name }} END / 2.205)::NUMERIC, 
+       {{ precision }}
+    )
+{% endmacro %}

greenery/macros/positive_values.sql

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+{% test positive_values(model, column_name) %}
+
+select
+    *
+from
+    {{ model }}
+where
+    {{ column_name }} < 0
+
+{% endtest %}

greenery/models/example/my_first_dbt_model.sql

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+
+/*
+    Welcome to your first dbt model!
+    Did you know that you can also configure models directly within SQL files?
+    This will override configurations stated in dbt_project.yml
+
+    Try changing "table" to "view" below
+*/
+
+{{ config(materialized='table') }}
+
+with source_data as (
+
+    select 1 as id
+    union all
+    select null as id
+
+)
+
+select *
+from source_data
+
+/*
+    Uncomment the line below to remove records with null `id` values
+*/
+
+-- where id is not null

greenery/models/example/my_second_dbt_model.sql

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+
+-- Use the `ref` function to select from other models
+
+select *
+from {{ ref('my_first_dbt_model') }}
+where id = 1

greenery/models/example/schema.yml

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+
+version: 2
+
+models:
+  - name: my_first_dbt_model
+    description: "A starter dbt model"
+    columns:
+      - name: id
+        description: "The primary key for this table"
+        tests:
+          - unique
+          - not_null
+
+  - name: my_second_dbt_model
+    description: "A starter dbt model"
+    columns:
+      - name: id
+        description: "The primary key for this table"
+        tests:
+          - unique
+          - not_null

greenery/models/staging/postgres/_postgres_models.yml

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+version: 2
+
+models:
+  - name: stg_postgres__addresses
+    description: >
+      Staging model for address data. 
+    columns:
+      - name: address_id
+        description: >
+          Primary key for stg_postgres__addresses table
+  - name: stg_postgres__events
+    description: >
+      Staging model for event stream data.
+    columns:
+      - name: event_id
+        description: >
+          Primary key for stg_postgres__events table
+      - name: user_id
+        description: >
+          Foreign key to stg_postgres__users table
+      - name: order_id
+        description: >
+          Foreign key to stg_postgres__orders table
+      - name: product_id
+        description: >
+          Foreign key to stg_postgres__products table
+  - name: stg_postgres__order_items
+    description: >
+      Staging model for order items data
+    columns: 
+      - name: order_id
+        description: >
+          Foreign key to stg_postgres__orders table
+      - name: product_id
+        description: >
+          Foreign key to stg_postgres__products table
+  - name: stg_postgres__orders
+    description: >
+      Staging model for orders data
+    columns:
+      - name: order_id
+        description: >
+          Primary key for stg_postgres__orders table
+      - name: user_id
+        description: >
+          Foreign key to stg_postgres__users table
+      - name: address_id
+        description: >
+          Foreign key to stg_postgres__addresses table
+      - name: promo_type
+        description: >
+          Foreign key to stg_postgres__promos table
+  - name: stg_postgres__products
+    description: >
+      Staging model for products data
+    columns:
+      - name: product_id
+        description: >
+          Primary key for stg_postgres__products table
+  - name: stg_postgres__promos
+    description: >
+      Staging model for promos data
+    columns:
+      - name: promo_type
+        description: >
+          Primary key to stg_postgres__promos table. 
+          Not an ID - more of a promo descriptor that is nonetheless unique.
+  - name: stg_postgres__users
+    description: >
+      Staging model for users data
+    columns: 
+      - name: user_id
+        description: >
+          Primary key to stg_postgres__users table.
+      - name: address_id
+        description: >
+          Foreign key to stg_postgres__addresses table. 

greenery/models/staging/postgres/_postgres_sources.yml

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+version: 2
+
+sources:
+
+  - name: postgres # name of the source (this can be named whatever you want, but should be descriptive. this source (superheroes) is used for our week 1 tutorial so thats why i named it this way)
+    schema: public # this is the schema our raw data lives in
+    database: raw # this is the name of our database
+
+    quoting:
+      database: false
+      schema: false
+      identifier: false
+
+    freshness:
+      warn_after: {count: 24, period: hour}
+      error_after: {count: 48, period: hour}
+
+    tables:
+      - name: addresses
+        description: >
+          Contains address details for user or order addresses
+      - name: events
+        loaded_at_field: created_at
+        description: >
+          Event stream data for our e-commerce website
+      - name: orders
+        loaded_at_field: created_at
+        description: >
+          Information about each order created on greenery's website
+      - name: order_items
+        description: >
+          Information about the items purchased within each order
+      - name: products
+        description: >
+          Information about the products available for purchase on greenery's website
+      - name: promos
+        description: >
+          Information about promos available for greenery purchases
+      - name: users
+        loaded_at_field: created_at
+        description: >
+           Information about each greenery userß
+