Added case for handling postgres foreign tables... (#476)

* Add link for fewer_rows_than schema test in docs (#465)

* Added case for handling postgres foreign tables (tables which are external to current database and are imported into current database from remote data stores by using Foreign Data Wrappers functionallity).

* Reworked getting of postges table_type.

* Added needed changes to CHANGELOG.

Co-authored-by: José Coto <jlcoto@users.noreply.github.com>
Co-authored-by: Taras Stetsiak <tstetsiak@health-union.com>

Author: 3 people

CHANGELOG.md

@@ -14,10 +14,16 @@
 ## 🚨 Breaking changes
 - dbt ONE POINT OH is here! This version of dbt-utils requires _any_ version (minor and patch) of v1, which means far less need for compatibility releases in the future. 
 - The partition column in the `mutually_exclusive_ranges` test is now always called `partition_by_col`. This enables compatibility with `--store-failures` when multiple columns are concatenated together. If you have models built on top of the failures table, update them to reflect the new column name. ([#423](https://github.com/dbt-labs/dbt-utils/issues/423), [#430](https://github.com/dbt-labs/dbt-utils/pull/430))
+
+## Fixes
+- `get_relations_by_pattern()` now uses additional sub macros `get_table_types_sql()` to determine table types for different database engines. ([#357](https://github.com/dbt-labs/dbt-utils/issues/357), [#476](https://github.com/dbt-labs/dbt-utils/pull/476))
+
 ## Under the hood
 - make date_spine macro compatible with the Athena connector (#462)
+
 ## Contributors:
 - [codigo-ergo-sum](https://github.com/codigo-ergo-sum) (#430)
+- [Aesthet](https://github.com/Aesthet) (#476)
 
 # dbt-utils 0.7.5
 🚨 This is a compatibility release in preparation for `dbt-core` v1.0.0 (🎉). Projects using dbt-utils 0.7.4 with dbt-core v1.0.0 can expect to see a deprecation warning. This will be resolved in dbt_utils v0.8.0.

macros/sql/get_table_types_sql.sql

@@ -0,0 +1,22 @@
+{%- macro get_table_types_sql() -%}
+  {{ return(adapter.dispatch('get_table_types_sql', 'dbt_utils')()) }}
+{%- endmacro -%}
+
+{% macro default__get_table_types_sql() %}
+            case table_type
+                when 'BASE TABLE' then 'table'
+                when 'EXTERNAL TABLE' then 'external'
+                when 'MATERIALIZED VIEW' then 'materializedview'
+                else lower(table_type)
+            end as "table_type"
+{% endmacro %}
+
+
+{% macro postgres__get_table_types_sql() %}
+            case table_type
+                when 'BASE TABLE' then 'table'
+                when 'FOREIGN' then 'external'
+                when 'MATERIALIZED VIEW' then 'materializedview'
+                else lower(table_type)
+            end as "table_type"
+{% endmacro %}

macros/sql/get_tables_by_pattern_sql.sql

@@ -8,12 +8,7 @@
         select distinct
             table_schema as "table_schema",
             table_name as "table_name",
-            case table_type
-                when 'BASE TABLE' then 'table'
-                when 'EXTERNAL TABLE' then 'external'
-                when 'MATERIALIZED VIEW' then 'materializedview'
-                else lower(table_type)
-            end as "table_type"
+            {{ dbt_utils.get_table_types_sql() }}
         from {{ database }}.information_schema.tables
         where table_schema ilike '{{ schema_pattern }}'
         and table_name ilike '{{ table_pattern }}'