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How to use build_diff_tables method in dbt-osmosis

Best Python code snippet using dbt-osmosis_python

diff.py

Source:diff.py

...23    # Compile models24    original_node = runner.compile_node(original_node)25    changed_node = runner.compile_node(changed_node)26    return original_node.compiled_sql, changed_node.compiled_sql27def build_diff_tables(model: str, runner: DbtProject) -> Tuple[BaseRelation, BaseRelation]:28    """Leverage git to build two temporary tables for diffing the results of a query throughout a change"""29    # Resolve git node30    node = runner.get_ref_node(model)31    dbt_path = Path(node.root_path)32    repo = Repo(dbt_path, search_parent_directories=True)33    t = next(Path(repo.working_dir).rglob(node.original_file_path)).relative_to(repo.working_dir)34    sha = repo.head.object.hexsha35    target = repo.head.object.tree[str(t)]36    # Create original node37    git_node_name = "z_" + sha[-7:]38    original_node = runner.get_server_node(target.data_stream.read().decode("utf-8"), git_node_name)39    # Alias changed node40    changed_node = node41    # Compile models42    original_node = runner.compile_node(original_node).node43    changed_node = runner.compile_node(changed_node).node44    # Lookup and resolve original ref based on git sha45    git_node_parts = original_node.database, "dbt_diff", git_node_name46    ref_A, did_exist = runner.get_or_create_relation(*git_node_parts)47    if not did_exist:48        logger().info("Creating new relation for %s", ref_A)49        with runner.adapter.connection_named("dbt-osmosis"):50            runner.execute_macro(51                "create_schema",52                kwargs={"relation": ref_A},53            )54            runner.execute_macro(55                "create_table_as",56                kwargs={57                    "sql": original_node.compiled_sql,58                    "relation": ref_A,59                    "temporary": True,60                },61                run_compiled_sql=True,62            )63    # Resolve modified fake ref based on hash of it compiled SQL64    temp_node_name = "z_" + hashlib.md5(changed_node.compiled_sql.encode("utf-8")).hexdigest()[-7:]65    git_node_parts = original_node.database, "dbt_diff", temp_node_name66    ref_B, did_exist = runner.get_or_create_relation(*git_node_parts)67    if not did_exist:68        ref_B = runner.adapter.Relation.create(*git_node_parts)69        logger().info("Creating new relation for %s", ref_B)70        with runner.adapter.connection_named("dbt-osmosis"):71            runner.execute_macro(72                "create_schema",73                kwargs={"relation": ref_B},74            )75            runner.execute_macro(76                "create_table_as",77                kwargs={78                    "sql": original_node.compiled_sql,79                    "relation": ref_B,80                    "temporary": True,81                },82                run_compiled_sql=True,83            )84    return ref_A, ref_B85def diff_tables(86    ref_A: BaseRelation,87    ref_B: BaseRelation,88    pk: str,89    runner: DbtProject,90    aggregate: bool = True,91) -> agate.Table:92    logger().info("Running diff")93    _, table = runner.adapter_execute(94        runner.execute_macro(95            "_dbt_osmosis_compare_relations_agg" if aggregate else "_dbt_osmosis_compare_relations",96            kwargs={97                "a_relation": ref_A,98                "b_relation": ref_B,99                "primary_key": pk,100            },101        ),102        auto_begin=True,103        fetch=True,104    )105    return table106def diff_queries(107    sql_A: str, sql_B: str, pk: str, runner: DbtProject, aggregate: bool = True108) -> agate.Table:109    logger().info("Running diff")110    _, table = runner.adapter_execute(111        runner.execute_macro(112            "_dbt_osmosis_compare_queries_agg" if aggregate else "_dbt_osmosis_compare_queries",113            kwargs={114                "a_query": sql_A,115                "b_query": sql_B,116                "primary_key": pk,117            },118        ),119        auto_begin=True,120        fetch=True,121    )122    return table123def diff_and_print_to_console(124    model: str,125    pk: str,126    runner: DbtProject,127    make_temp_tables: bool = False,128    agg: bool = True,129    output: str = "table",130) -> None:131    """132    Compare two tables and print the results to the console133    """134    if make_temp_tables:135        table = diff_tables(*build_diff_tables(model, runner), pk, runner, agg)136    else:137        table = diff_queries(*build_diff_queries(model, runner), pk, runner, agg)138    print("")139    output = output.lower()140    if output == "table":141        table.print_table()142    elif output in ("chart", "bar"):143        if not agg:144            logger().warn(145                "Cannot render output format chart with --no-agg option, defaulting to table"146            )147            table.print_table()148        else:149            _table = table.compute(...

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