initial commit with prework code

.gitignore

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+
+target/
+dbt_modules/
+logs/

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](http://slack.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

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: 'jaffle_shop'
+version: '1.0.0'
+config-version: 2
+
+# This setting configures which "profile" dbt uses for this project.
+profile: 'default'
+
+# These configurations specify where dbt should look for different types of files.
+# The `source-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!
+source-paths: ["models"]
+analysis-paths: ["analysis"]
+test-paths: ["tests"]
+data-paths: ["data"]
+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_modules"
+
+
+# Configuring models
+# Full documentation: https://docs.getdbt.com/docs/configuring-models
+
+# In this example config, we tell dbt to build all models in the jaffle_shop project
+# as tables. These settings can be overridden in the individual model files
+# using the `{{ config(...) }}` macro.
+
+models:
+  jaffle_shop:
+    +materialized: table

models/customers.sql

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+with customers as (
+
+    select * from {{ ref('stg_customers') }}
+
+),
+
+orders as (
+
+    select * from {{ ref('stg_orders') }}
+
+),
+
+customer_orders as (
+
+    select
+        customer_id,
+
+        min(order_date) as first_order_date,
+        max(order_date) as most_recent_order_date,
+        count(order_id) as number_of_orders
+
+    from orders
+
+    group by 1
+
+),
+
+
+final as (
+
+    select
+        customers.customer_id,
+        customers.first_name,
+        customers.last_name,
+        customer_orders.first_order_date,
+        customer_orders.most_recent_order_date,
+        coalesce(customer_orders.number_of_orders, 0) as number_of_orders
+
+    from customers
+
+    left join customer_orders using (customer_id)
+
+)
+
+select * from final

models/schema.yml

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+version: 2
+
+models:
+  - name: customers
+    columns:
+      - name: customer_id
+        tests:
+          - unique
+          - not_null
+
+  - name: stg_customers
+    columns:
+      - name: customer_id
+        tests:
+          - unique
+          - not_null
+
+  - name: stg_orders
+    columns:
+      - name: order_id
+        tests:
+          - unique
+          - not_null
+      - name: status
+        tests:
+          - accepted_values:
+              values: ['placed', 'shipped', 'completed', 'return_pending', 'returned']
+      - name: customer_id
+        tests:
+          - not_null
+          - relationships:
+              to: ref('stg_customers')
+              field: customer_id

models/stg_customers.sql

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+select
+    id as customer_id,
+    first_name,
+    last_name
+
+from `dbt-tutorial`.jaffle_shop.customers

models/stg_orders.sql

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+select
+    id as order_id,
+    user_id as customer_id,
+    order_date,
+    status
+
+from `dbt-tutorial`.jaffle_shop.orders