dbt-table-diff 2.2.0a1

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Quick Start:

This example Workflow File shows how to configure the Github Action via Github Actions Inputs.
This example Pull Request shows the output of the Github Action.

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Github Actions Input Arguments:

Input Parameter	Description
GCP_TOKEN	for connecting to BQ (runs dbt compile and dbt_table_diff/sql_checks to compare tables)
GH_TOKEN	for connecting to Github (ie. fetches modified models/*.sql in your PR, adds comment on your PR)
PR_NUMBER	for fetching open PR from github (Pull Request ID [int])
GH_REPO	for fetching open PR from github (Repository Name)
GH_ORG	for fetching open PR from github (Repository owner/organization name)
DBT_PROFILE_FILE	the local path in your repo to your profile.yml for dbt (this is necessary for compiling manifest.json during setup process)
dev_prefix	the prefix used when running dbt locally (Your source schema/environment for comparison)
prod_prefix	the prefix used when running dbt remotely (Your target schema/environment for comparison)
fallback_prefix	useful if you have an overriden macro for generate_schema_name in your dbt project, which leverages a different prefix for some schemas in prod.
irregular_schemas	comma separated string of schemas which use fallback_prefix
project_id	for connecting to BQ (BigQuery Project ID)
ignored_schemas	comma separated string of schemas to ignore (skip checking during github action)

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Description:

This Github Action is intended for comparing models in dbt that have changed during an open PR.
It only currently supports BigQuery.

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Step-By-Step Break Down of Process:

• Fetches list of files modified in Pull Request
  • by CURLing github.api.com/repos/{organization}/{repository}/pulls/{pull_request_id}/files
• Filters on relevant_files
  • which are files matching models/*.sql
• Builds manifest.json
  • By running dbt deps; dbt compile
• Parses manifest.json for relevant_models
  • using manifest-attribute original_file_path matching relevant_files
• Runs all SQL files in dbt_table_diff/sql_checks
  • for each of the relevant_models, compare the two dbt targets (dev_prefix vs prod_prefix)
• Saves output to file
  • in a format supported by Github comments
• Posts comment on open PR
  • leveraging py-github-helper PyPi package