Reimplement macros which have been converted into versions inside the Fabric adapter which generate nested CTEs which cannot run on SQL server.

Author: Benjamin-Knight

dbt/include/sqlserver/macros/adapter/columns.sql

@@ -1,3 +1,28 @@
+{% macro sqlserver__get_empty_subquery_sql(select_sql, select_sql_header=none) %}
+    {% if select_sql.strip().lower().startswith('with') %}
+        {{ select_sql }}
+    {% else -%}
+        select * from (
+        {{ select_sql }}
+    ) dbt_sbq_tmp
+    where 1 = 0
+    {%- endif -%}
+
+{% endmacro %}
+
+{% macro sqlserver__get_columns_in_query(select_sql) %}
+    {% set query_label = apply_label() %}
+    {% call statement('get_columns_in_query', fetch_result=True, auto_begin=False) -%}
+        select TOP 0 * from (
+            {{ select_sql }}
+        ) as __dbt_sbq
+        where 0 = 1
+        {{ query_label }}
+    {% endcall %}
+
+    {{ return(load_result('get_columns_in_query').table.columns | map(attribute='name') | list) }}
+{% endmacro %}
+
 {% macro sqlserver__alter_column_type(relation, column_name, new_column_type) %}
 
     {%- set tmp_column = column_name + "__dbt_alter" -%}