Merge pull request #1 from jitsucom/initial_commit

Initial commit

.gitignore

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+.idea
+
+target/
+dbt_modules/
+logs/

README.md

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+# dbt-jitsu
+This [dbt package](https://docs.getdbt.com/docs/package-management):
+* Transforms pageviews into sessions
+* For User stitching please enable builtin Jitsu feature [Retrospective User Recognition](https://jitsu.com/docs/other-features/retrospective-user-recognition)
+
+
+## Installation instructions
+New to dbt packages? Read more about them [here](https://docs.getdbt.com/docs/building-a-dbt-project/package-management/).
+1. Include this package in your `packages.yml`
+2. Run `dbt deps`
+3. Include the following in your `dbt_project.yml` directly within your `vars:` block (making sure to handle indenting appropriately). **Update the value to point to your jitsu pageviews table**.
+
+```YAML
+# dbt_project.yml
+config-version: 2
+...
+
+vars:
+  jitsu:
+     jitsu_events_table: "{{ source('jitsu', 'pageviews') }}" #or plane table path like database.schema.table_name
+
+```
+
+4. Optionally configure extra parameters by adding them to your own `dbt_project.yml` file – see [dbt_project.yml](dbt_project.yml)
+   for more details:
+
+```YAML
+# dbt_project.yml
+config-version: 2
+
+...
+
+vars:
+   jitsu:
+    jitsu_events_table: "{{ source('jitsu', 'pageviews') }}"
+    jitsu_sessionization_trailing_window: 3
+    jitsu_session_inactivity_cutoff: 30 * 60
+    jitsu_pass_through_columns: ['event_type']
+    jitsu_model_materialized: incremental
+
+```
+5. Execute `dbt seed` -- this project includes a CSV that must be seeded for it
+   the package to run successfully.
+6. Execute `dbt run` – the Jitsu Sessions models will get built
+
+## Database support
+This package has been tested on
+PostgreSQL, ClickHouse, Redshift and BigQuery.
+
+### ClickHouse implementation details
+This package relies heavily on SQL window functions.
+Because Window functions are considered as an [experimental feature in ClickHouse](https://clickhouse.tech/docs/en/sql-reference/window-functions/)
+we cannot guarantee stable results of using this package with ClickHouse database
+
+Currently, this package doesn't support incremental materialization with ClickHouse. Please set
+`jitsu_model_materialized` to `table`
+
+## Contributing
+Additional contributions to this repo are very welcome!