diff --git a/README.md b/README.md
index 28d786d..f6e2724 100644
--- a/README.md
+++ b/README.md
@@ -34,6 +34,9 @@ dbt-exasol:
 
 # Known isues
 
+## >=1.3 Python model not yet supported - WIP
+- Please follow [this pull request](https://github.com/tglunde/dbt-exasol/pull/59) 
+
 ## Breaking changes with release 1.2.2
 - Timestamp format defaults to YYYY-MM-DDTHH:MI:SS.FF6
 
@@ -50,25 +53,6 @@ In order to support packages like dbt-utils and dbt-audit-helper, we needed to c
 # Reporting bugs and contributing code
 - Please report bugs using the issues
 
-# Release History
-
-## Release 1.2.2
-- Added timestamp format parameter in profile.yml parameter file to set Exasol session parameter NLS_TIMESTAMP_FORMAT when opening a connection. Defaults to 'YYYY-MM-DDTHH:MI:SS.FF6' 
-- Adding row_separator (LF/CRLF) parameter in profile.yml parameter file to be used in seed csv import. Defaults to operating system default (os.linesep in python).
-- bugfix #36 regarding column quotes and case sensitivity of column names. 
-- bugfix #42 regarding datatype change when using snapshot materialization. Added modify column statement in exasol__alter_column_type macro
-- bugfix #17 number format datatype
-- issue #24 - dbt-core v1.2.0 compatibility finished
+# Releases
 
-## Release 1.2.0
-- support for invalidate_hard_deletes option in snapshots added by jups23
-- added persist_docs support by sti0
-- added additional configuration keys that can be included in profiles.yml by johannes-becker-otto
-- added cross-database macros introduced in 1.2 by sti0
-- added support for connection retries by sti0
-- added support for grants by sti0
-- added pytest functional adapter tests by tglunde
-- tox testing for python 3.7.2 through 3.10 added by tglunde
- 
-## Release 1.0.0
-- pyexasol HTTP import csv feature implemented. Optimal performance and compatibility with Exasol CSV parsing
+[GitHub Releases](https://github.com/tglunde/dbt-exasol/releases)
diff --git a/dbt/adapters/exasol/connections.py b/dbt/adapters/exasol/connections.py
index c23058a..6973d01 100644
--- a/dbt/adapters/exasol/connections.py
+++ b/dbt/adapters/exasol/connections.py
@@ -258,6 +258,10 @@ def execute(self, query, bindings: Optional[Any] = None):
         """executing query"""
         if query.startswith("0CSV|"):
             self.import_from_file(bindings, query.split("|", 1)[1])  # type: ignore
+        elif query.__contains__("|SEPARATEMEPLEASE|"):
+            sqls = query.split("|SEPARATEMEPLEASE|")
+            for sql in sqls:
+                self.stmt = self.connection.execute(sql)
         else:
             self.stmt = self.connection.execute(query)
         return self
diff --git a/dbt/adapters/exasol/impl.py b/dbt/adapters/exasol/impl.py
index 0fd83a7..abbb5ea 100644
--- a/dbt/adapters/exasol/impl.py
+++ b/dbt/adapters/exasol/impl.py
@@ -8,7 +8,8 @@
 from dbt.exceptions import raise_compiler_error
 from dbt.utils import filter_null_values
 
-from dbt.adapters.exasol import ExasolColumn, ExasolConnectionManager, ExasolRelation
+from dbt.adapters.exasol import (ExasolColumn, ExasolConnectionManager,
+                                 ExasolRelation)
 
 
 class ExasolAdapter(SQLAdapter):
@@ -79,3 +80,9 @@ def quote_seed_column(self, column: str, quote_config: Optional[bool]) -> str:
         if quote_columns:
             return self.quote(column)
         return column
+
+    def valid_incremental_strategies(self):
+        """The set of standard builtin strategies which this adapter supports out-of-the-box.
+        Not used to validate custom strategies defined by end users.
+        """
+        return ["append", "delete+insert"]
\ No newline at end of file
diff --git a/dbt/include/exasol/macros/materializations/incremental.sql b/dbt/include/exasol/macros/materializations/incremental.sql
index 6e8975d..c428807 100644
--- a/dbt/include/exasol/macros/materializations/incremental.sql
+++ b/dbt/include/exasol/macros/materializations/incremental.sql
@@ -1,91 +1,93 @@
-{% macro incremental_delete(target_relation, tmp_relation) -%}
-  {%- set unique_key = config.get('unique_key') -%}
-
-  {% if unique_key %}
-    {% if unique_key is sequence and unique_key is not string %}
-        delete from {{ target_relation }}
-        where exists (select 1 from {{ tmp_relation }}
-            where
-            {% for key in unique_key %}
-                {{ tmp_relation }}.{{ key }} = {{ target_relation }}.{{ key }}
-                {{ "and " if not loop.last }}
-            {% endfor %}
-        );
-    {% else %}
-        delete from {{ target_relation }}
-        where (
-            {{ unique_key }}) in (
-            select ({{ unique_key }})
-            from {{ tmp_relation }}
-        );
-    {% endif %}
-  {%endif%}
-{%- endmacro %}
 
-{% macro incremental_insert(tmp_relation, target_relation, unique_key=none, statement_name="main") %}
-    {%- set dest_columns = adapter.get_columns_in_relation(target_relation) -%}
-    {%- set dest_cols_csv = dest_columns | join(', ', attribute='name')  -%}
-
-    insert into {{ target_relation }} ({{ dest_cols_csv }})
-    (
-       select {{ dest_cols_csv }}
-       from {{ tmp_relation.schema }}.{{ tmp_relation.identifier }}
-    );
-{%- endmacro %}
+{% materialization incremental, adapter='exasol' -%}
 
+  -- relations
+  {%- set existing_relation = load_relation(this) -%}
 
-{% materialization incremental, adapter='exasol' -%}
+  {%- set target_relation = this.incorporate(type='table') -%}
+  {%- set temp_relation = make_temp_relation(target_relation)-%}
+  {%- set intermediate_relation = make_intermediate_relation(target_relation)-%}
+  {%- set backup_relation_type = 'table' if existing_relation is none else existing_relation.type -%}
+  {%- set backup_relation = make_backup_relation(target_relation, backup_relation_type) -%}
 
+  -- configs
   {%- set unique_key = config.get('unique_key') -%}
-  {%- set full_refresh_mode = (flags.FULL_REFRESH == True) -%}
-  {%- set identifier = model['alias'] -%}
-  {%- set target_relation = api.Relation.create(identifier=identifier, schema=schema, database=database,  type='table') -%}
-  {% set existing_relation = adapter.get_relation(database=database, schema=schema, identifier = identifier) %}
-  {% set tmp_relation = make_temp_relation(target_relation) %}
+  {%- set full_refresh_mode = (should_full_refresh()  or existing_relation.is_view) -%}
+  {%- set on_schema_change = incremental_validate_on_schema_change(config.get('on_schema_change'), default='ignore') -%}
+
+  -- the temp_ and backup_ relations should not already exist in the database; get_relation
+  -- will return None in that case. Otherwise, we get a relation that we can drop
+  -- later, before we try to use this name for the current operation. This has to happen before
+  -- BEGIN, in a separate transaction
+  {%- set preexisting_intermediate_relation = load_cached_relation(intermediate_relation)-%}
+  {%- set preexisting_backup_relation = load_cached_relation(backup_relation) -%}
+   -- grab current tables grants config for comparision later on
+  {% set grant_config = config.get('grants') %}
+  {{ drop_relation_if_exists(preexisting_intermediate_relation) }}
+  {{ drop_relation_if_exists(preexisting_backup_relation) }}
 
-  -- grab current tables grants config for comparision later on
-  {%- set grant_config = config.get('grants') -%}
-
-  -- setup
   {{ run_hooks(pre_hooks, inside_transaction=False) }}
 
   -- `BEGIN` happens here:
   {{ run_hooks(pre_hooks, inside_transaction=True) }}
 
+  {% set to_drop = [] %}
+
   {% if existing_relation is none %}
-    {% set build_sql = create_table_as(False, target_relation, sql) %}
-  {% elif existing_relation.is_view %}
-    {% do adapter.drop_relation(existing_relation) %}
-    {% set build_sql = create_table_as(False, target_relation, sql) %}
+      {% set build_sql = get_create_table_as_sql(False, target_relation, sql) %}
   {% elif full_refresh_mode %}
-    {% do drop_relation(existing_relation) %}
-    {% set build_sql = create_table_as(False, target_relation, sql) %}
+      {% set build_sql = get_create_table_as_sql(False, intermediate_relation, sql) %}
+      {% set need_swap = true %}
   {% else %}
-    {% do run_query(create_table_as(True, tmp_relation, sql)) %}
-    {% do run_query(incremental_delete(target_relation, tmp_relation)) %}
-    {% set build_sql = incremental_insert(tmp_relation, target_relation) %}
+    {% do run_query(get_create_table_as_sql(True, temp_relation, sql)) %}
+    {% do adapter.expand_target_column_types(
+             from_relation=temp_relation,
+             to_relation=target_relation) %}
+    {#-- Process schema changes. Returns dict of changes if successful. Use source columns for upserting/merging --#}
+    {% set dest_columns = process_schema_changes(on_schema_change, temp_relation, existing_relation) %}
+    {% if not dest_columns %}
+      {% set dest_columns = adapter.get_columns_in_relation(existing_relation) %}
+    {% endif %}
+
+    {#-- Get the incremental_strategy, the macro to use for the strategy, and build the sql --#}
+    {% set incremental_strategy = config.get('incremental_strategy') or 'default' %}
+    {% set incremental_predicates = config.get('predicates', none) or config.get('incremental_predicates', none) %}
+    {% set strategy_sql_macro_func = adapter.get_incremental_strategy_macro(context, incremental_strategy) %}
+    {% set strategy_arg_dict = ({'target_relation': target_relation, 'temp_relation': temp_relation, 'unique_key': unique_key, 'dest_columns': dest_columns, 'incremental_predicates': incremental_predicates }) %}
+    {% set build_sql = strategy_sql_macro_func(strategy_arg_dict) %}
+
   {% endif %}
 
-  
-  {%- call statement('main') -%}
-    {{ build_sql }}
-  {%- endcall -%}
+  {% call statement("main") %}
+      {{ build_sql }}
+  {% endcall %}
 
-  {% if tmp_relation is not none %}
-    {% do adapter.drop_relation(tmp_relation) %}
+  {% if need_swap %}
+      {% do adapter.rename_relation(existing_relation, backup_relation) %}
+      {% do adapter.rename_relation(intermediate_relation, target_relation) %}
+      {% do to_drop.append(backup_relation) %}
   {% endif %}
-  
-  {{ run_hooks(post_hooks, inside_transaction=True) }}
 
-  {% set should_revoke = should_revoke(existing_relation, full_refresh_mode=full_refresh_mode) %}
-  {% do apply_grants(target_relation, grant_config, should_revoke) %}
+  {% set should_revoke = should_revoke(existing_relation, full_refresh_mode) %}
+  {% do apply_grants(target_relation, grant_config, should_revoke=should_revoke) %}
+
+  {% do persist_docs(target_relation, model) %}
+
+  {% if existing_relation is none or existing_relation.is_view or should_full_refresh() %}
+    {% do create_indexes(target_relation) %}
+  {% endif %}
+
+  {{ run_hooks(post_hooks, inside_transaction=True) }}
 
   -- `COMMIT` happens here
-  {{ adapter.commit() }}
+  {% do adapter.commit() %}
 
-  {{ run_hooks(post_hooks, inside_transaction=False) }}
+  {% for rel in to_drop %}
+      {% do adapter.drop_relation(rel) %}
+  {% endfor %}
 
-  {% do persist_docs(target_relation, model) %}
+  {{ run_hooks(post_hooks, inside_transaction=False) }}
 
   {{ return({'relations': [target_relation]}) }}
-{%- endmaterialization %}
+
+{%- endmaterialization %}
\ No newline at end of file
diff --git a/dbt/include/exasol/macros/materializations/incremental_strategies.sql b/dbt/include/exasol/macros/materializations/incremental_strategies.sql
new file mode 100644
index 0000000..1a08dfb
--- /dev/null
+++ b/dbt/include/exasol/macros/materializations/incremental_strategies.sql
@@ -0,0 +1,9 @@
+{% macro exasol__get_incremental_default_sql(arg_dict) %}
+
+  {% if arg_dict["unique_key"] %}
+    {% do return(get_incremental_delete_insert_sql(arg_dict)) %}
+  {% else %}
+    {% do return(get_incremental_append_sql(arg_dict)) %}
+  {% endif %}
+
+{% endmacro %}
diff --git a/dbt/include/exasol/macros/materializations/merge.sql b/dbt/include/exasol/macros/materializations/merge.sql
new file mode 100644
index 0000000..19e2b41
--- /dev/null
+++ b/dbt/include/exasol/macros/materializations/merge.sql
@@ -0,0 +1,34 @@
+{% macro exasol__get_delete_insert_merge_sql(target, source, unique_key, dest_columns) -%}
+
+    {%- set dest_cols_csv = get_quoted_csv(dest_columns | map(attribute="name")) -%}
+
+    {% if unique_key %}
+        {% if unique_key is sequence and unique_key is not string %}
+            delete from {{ target }}
+            where exists ( select 1 from {{ source }}
+                where
+                {% for key in unique_key %}
+                    {{ source }}.{{ key }} = {{ target }}.{{ key }}
+                    {{ "and " if not loop.last }}
+                {% endfor %}
+            )
+        {% else %}
+            delete from {{ target }}
+            where (
+                {{ unique_key }}) in (
+                select ({{ unique_key }})
+                from {{ source }}
+            )
+
+        {% endif %}
+    {% endif %}
+
+    |SEPARATEMEPLEASE|
+
+    insert into {{ target }} ({{ dest_cols_csv }})
+    (
+        select {{ dest_cols_csv }}
+        from {{ source }}
+    )
+
+{%- endmacro %}
diff --git a/dbt/include/exasol/macros/materializations/view.sql b/dbt/include/exasol/macros/materializations/view.sql
deleted file mode 100644
index 7acfb65..0000000
--- a/dbt/include/exasol/macros/materializations/view.sql
+++ /dev/null
@@ -1,4 +0,0 @@
-{% materialization view, adapter='exasol' -%}
-    {{ return(create_or_replace_view()) }}
-    
-{%- endmaterialization %}
\ No newline at end of file
diff --git a/poetry.lock b/poetry.lock
index a433476..ed57b67 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -27,19 +27,18 @@ test = ["PyICU (>=2.4.2)", "coverage (>=3.7.1)", "cssselect (>=0.9.1)", "lxml (>
 
 [[package]]
 name = "astroid"
-version = "2.15.1"
+version = "2.15.2"
 description = "An abstract syntax tree for Python with inference support."
 category = "dev"
 optional = false
 python-versions = ">=3.7.2"
 files = [
-    {file = "astroid-2.15.1-py3-none-any.whl", hash = "sha256:89860bda98fe2bbd1f5d262229be7629d778ce280de68d95d4a73d1f592ad268"},
-    {file = "astroid-2.15.1.tar.gz", hash = "sha256:af4e0aff46e2868218502789898269ed95b663fba49e65d91c1e09c966266c34"},
+    {file = "astroid-2.15.2-py3-none-any.whl", hash = "sha256:dea89d9f99f491c66ac9c04ebddf91e4acf8bd711722175fe6245c0725cc19bb"},
+    {file = "astroid-2.15.2.tar.gz", hash = "sha256:6e61b85c891ec53b07471aec5878f4ac6446a41e590ede0f2ce095f39f7d49dd"},
 ]
 
 [package.dependencies]
 lazy-object-proxy = ">=1.4.0"
-typed-ast = {version = ">=1.4.0,<2.0", markers = "implementation_name == \"cpython\" and python_version < \"3.8\""}
 typing-extensions = {version = ">=4.0.0", markers = "python_version < \"3.11\""}
 wrapt = [
     {version = ">=1.11,<2", markers = "python_version < \"3.11\""},
@@ -77,9 +76,6 @@ files = [
     {file = "Babel-2.12.1.tar.gz", hash = "sha256:cc2d99999cd01d44420ae725a21c9e3711b3aadc7976d6147f622d8581963455"},
 ]
 
-[package.dependencies]
-pytz = {version = ">=2015.7", markers = "python_version < \"3.9\""}
-
 [[package]]
 name = "black"
 version = "22.12.0"
@@ -108,8 +104,6 @@ mypy-extensions = ">=0.4.3"
 pathspec = ">=0.9.0"
 platformdirs = ">=2"
 tomli = {version = ">=1.1.0", markers = "python_full_version < \"3.11.0a7\""}
-typed-ast = {version = ">=1.4.2", markers = "python_version < \"3.8\" and implementation_name == \"cpython\""}
-typing-extensions = {version = ">=3.10.0.0", markers = "python_version < \"3.10\""}
 
 [package.extras]
 colorama = ["colorama (>=0.4.3)"]
@@ -305,7 +299,6 @@ files = [
 
 [package.dependencies]
 colorama = {version = "*", markers = "platform_system == \"Windows\""}
-importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
 
 [[package]]
 name = "colorama"
@@ -386,10 +379,7 @@ Jinja2 = "3.1.2"
 logbook = ">=1.5,<1.6"
 mashumaro = {version = "3.0.4", extras = ["msgpack"]}
 minimal-snowplow-tracker = "0.0.2"
-networkx = [
-    {version = ">=2.3,<2.8.1", markers = "python_version < \"3.8\""},
-    {version = ">=2.3,<3", markers = "python_version >= \"3.8\""},
-]
+networkx = {version = ">=2.3,<3", markers = "python_version >= \"3.8\""}
 packaging = ">=20.9,<22.0"
 pathspec = ">=0.9.0,<0.10.0"
 pytz = ">=2015.7"
@@ -538,27 +528,6 @@ files = [
     {file = "idna-3.4.tar.gz", hash = "sha256:814f528e8dead7d329833b91c5faa87d60bf71824cd12a7530b5526063d02cb4"},
 ]
 
-[[package]]
-name = "importlib-metadata"
-version = "6.1.0"
-description = "Read metadata from Python packages"
-category = "main"
-optional = false
-python-versions = ">=3.7"
-files = [
-    {file = "importlib_metadata-6.1.0-py3-none-any.whl", hash = "sha256:ff80f3b5394912eb1b108fcfd444dc78b7f1f3e16b16188054bd01cb9cb86f09"},
-    {file = "importlib_metadata-6.1.0.tar.gz", hash = "sha256:43ce9281e097583d758c2c708c4376371261a02c34682491a8e98352365aad20"},
-]
-
-[package.dependencies]
-typing-extensions = {version = ">=3.6.4", markers = "python_version < \"3.8\""}
-zipp = ">=0.5"
-
-[package.extras]
-docs = ["furo", "jaraco.packaging (>=9)", "jaraco.tidelift (>=1.4)", "rst.linker (>=1.9)", "sphinx (>=3.5)", "sphinx-lint"]
-perf = ["ipython"]
-testing = ["flake8 (<5)", "flufl.flake8", "importlib-resources (>=1.3)", "packaging", "pyfakefs", "pytest (>=6)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=1.3)", "pytest-flake8", "pytest-mypy (>=0.9.1)", "pytest-perf (>=0.9.2)"]
-
 [[package]]
 name = "iniconfig"
 version = "2.0.0"
@@ -588,18 +557,18 @@ six = "*"
 
 [[package]]
 name = "isort"
-version = "5.11.5"
+version = "5.12.0"
 description = "A Python utility / library to sort Python imports."
 category = "dev"
 optional = false
-python-versions = ">=3.7.0"
+python-versions = ">=3.8.0"
 files = [
-    {file = "isort-5.11.5-py3-none-any.whl", hash = "sha256:ba1d72fb2595a01c7895a5128f9585a5cc4b6d395f1c8d514989b9a7eb2a8746"},
-    {file = "isort-5.11.5.tar.gz", hash = "sha256:6be1f76a507cb2ecf16c7cf14a37e41609ca082330be4e3436a18ef74add55db"},
+    {file = "isort-5.12.0-py3-none-any.whl", hash = "sha256:f84c2818376e66cf843d497486ea8fed8700b340f308f076c6fb1229dff318b6"},
+    {file = "isort-5.12.0.tar.gz", hash = "sha256:8bef7dde241278824a6d83f44a544709b065191b95b6e50894bdc722fcba0504"},
 ]
 
 [package.extras]
-colors = ["colorama (>=0.4.3,<0.5.0)"]
+colors = ["colorama (>=0.4.3)"]
 pipfile-deprecated-finder = ["pip-shims (>=0.5.2)", "pipreqs", "requirementslib"]
 plugins = ["setuptools"]
 requirements-deprecated-finder = ["pip-api", "pipreqs"]
@@ -636,7 +605,6 @@ files = [
 
 [package.dependencies]
 attrs = ">=17.4.0"
-importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
 pyrsistent = ">=0.14.0"
 setuptools = "*"
 six = ">=1.11.0"
@@ -928,25 +896,6 @@ files = [
     {file = "mypy_extensions-1.0.0.tar.gz", hash = "sha256:75dbf8955dc00442a438fc4d0666508a9a97b6bd41aa2f0ffe9d2f2725af0782"},
 ]
 
-[[package]]
-name = "networkx"
-version = "2.6.3"
-description = "Python package for creating and manipulating graphs and networks"
-category = "main"
-optional = false
-python-versions = ">=3.7"
-files = [
-    {file = "networkx-2.6.3-py3-none-any.whl", hash = "sha256:80b6b89c77d1dfb64a4c7854981b60aeea6360ac02c6d4e4913319e0a313abef"},
-    {file = "networkx-2.6.3.tar.gz", hash = "sha256:c0946ed31d71f1b732b5aaa6da5a0388a345019af232ce2f49c766e2d6795c51"},
-]
-
-[package.extras]
-default = ["matplotlib (>=3.3)", "numpy (>=1.19)", "pandas (>=1.1)", "scipy (>=1.5,!=1.6.1)"]
-developer = ["black (==21.5b1)", "pre-commit (>=2.12)"]
-doc = ["nb2plots (>=0.6)", "numpydoc (>=1.1)", "pillow (>=8.2)", "pydata-sphinx-theme (>=0.6,<1.0)", "sphinx (>=4.0,<5.0)", "sphinx-gallery (>=0.9,<1.0)", "texext (>=0.6.6)"]
-extra = ["lxml (>=4.5)", "pydot (>=1.4.1)", "pygraphviz (>=1.7)"]
-test = ["codecov (>=2.1)", "pytest (>=6.2)", "pytest-cov (>=2.12)"]
-
 [[package]]
 name = "networkx"
 version = "2.8.8"
@@ -1020,9 +969,6 @@ files = [
     {file = "platformdirs-3.2.0.tar.gz", hash = "sha256:d5b638ca397f25f979350ff789db335903d7ea010ab28903f57b27e1b16c2b08"},
 ]
 
-[package.dependencies]
-typing-extensions = {version = ">=4.5", markers = "python_version < \"3.8\""}
-
 [package.extras]
 docs = ["furo (>=2022.12.7)", "proselint (>=0.13)", "sphinx (>=6.1.3)", "sphinx-autodoc-typehints (>=1.22,!=1.23.4)"]
 test = ["appdirs (==1.4.4)", "covdefaults (>=2.3)", "pytest (>=7.2.2)", "pytest-cov (>=4)", "pytest-mock (>=3.10)"]
@@ -1039,9 +985,6 @@ files = [
     {file = "pluggy-1.0.0.tar.gz", hash = "sha256:4224373bacce55f955a878bf9cfa763c1e360858e330072059e10bad68531159"},
 ]
 
-[package.dependencies]
-importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
-
 [package.extras]
 dev = ["pre-commit", "tox"]
 testing = ["pytest", "pytest-benchmark"]
@@ -1109,18 +1052,18 @@ ujson = ["ujson"]
 
 [[package]]
 name = "pylint"
-version = "2.17.1"
+version = "2.17.2"
 description = "python code static checker"
 category = "dev"
 optional = false
 python-versions = ">=3.7.2"
 files = [
-    {file = "pylint-2.17.1-py3-none-any.whl", hash = "sha256:8660a54e3f696243d644fca98f79013a959c03f979992c1ab59c24d3f4ec2700"},
-    {file = "pylint-2.17.1.tar.gz", hash = "sha256:d4d009b0116e16845533bc2163493d6681846ac725eab8ca8014afb520178ddd"},
+    {file = "pylint-2.17.2-py3-none-any.whl", hash = "sha256:001cc91366a7df2970941d7e6bbefcbf98694e00102c1f121c531a814ddc2ea8"},
+    {file = "pylint-2.17.2.tar.gz", hash = "sha256:1b647da5249e7c279118f657ca28b6aaebb299f86bf92affc632acf199f7adbb"},
 ]
 
 [package.dependencies]
-astroid = ">=2.15.0,<=2.17.0-dev0"
+astroid = ">=2.15.2,<=2.17.0-dev0"
 colorama = {version = ">=0.4.5", markers = "sys_platform == \"win32\""}
 dill = [
     {version = ">=0.2", markers = "python_version < \"3.11\""},
@@ -1131,7 +1074,6 @@ mccabe = ">=0.6,<0.8"
 platformdirs = ">=2.2.0"
 tomli = {version = ">=1.1.0", markers = "python_version < \"3.11\""}
 tomlkit = ">=0.10.1"
-typing-extensions = {version = ">=3.10.0", markers = "python_version < \"3.10\""}
 
 [package.extras]
 spelling = ["pyenchant (>=3.2,<4.0)"]
@@ -1224,7 +1166,6 @@ files = [
 attrs = ">=19.2.0"
 colorama = {version = "*", markers = "sys_platform == \"win32\""}
 exceptiongroup = {version = ">=1.0.0rc8", markers = "python_version < \"3.11\""}
-importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
 iniconfig = "*"
 packaging = "*"
 pluggy = ">=0.12,<2.0"
@@ -1249,6 +1190,22 @@ files = [
 pytest = ">=5.0.0"
 python-dotenv = ">=0.9.1"
 
+[[package]]
+name = "pytest-parallel"
+version = "0.1.1"
+description = "a pytest plugin for parallel and concurrent testing"
+category = "dev"
+optional = false
+python-versions = "*"
+files = [
+    {file = "pytest-parallel-0.1.1.tar.gz", hash = "sha256:9aac3fc199a168c0a8559b60249d9eb254de7af58c12cee0310b54d4affdbfab"},
+    {file = "pytest_parallel-0.1.1-py3-none-any.whl", hash = "sha256:9e3703015b0eda52be9e07d2ba3498f09340a56d5c79a39b50f22fc5c38212fe"},
+]
+
+[package.dependencies]
+pytest = ">=3.0.0"
+tblib = "*"
+
 [[package]]
 name = "python-dateutil"
 version = "2.8.2"
@@ -1266,14 +1223,14 @@ six = ">=1.5"
 
 [[package]]
 name = "python-dotenv"
-version = "0.21.1"
+version = "1.0.0"
 description = "Read key-value pairs from a .env file and set them as environment variables"
 category = "dev"
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.8"
 files = [
-    {file = "python-dotenv-0.21.1.tar.gz", hash = "sha256:1c93de8f636cde3ce377292818d0e440b6e45a82f215c3744979151fa8151c49"},
-    {file = "python_dotenv-0.21.1-py3-none-any.whl", hash = "sha256:41e12e0318bebc859fcc4d97d4db8d20ad21721a6aa5047dd59f090391cb549a"},
+    {file = "python-dotenv-1.0.0.tar.gz", hash = "sha256:a8df96034aae6d2d50a4ebe8216326c61c3eb64836776504fcca410e5937a3ba"},
+    {file = "python_dotenv-1.0.0-py3-none-any.whl", hash = "sha256:f5971a9226b701070a4bf2c38c89e5a3f0d64de8debda981d1db98583009122a"},
 ]
 
 [package.extras]
@@ -1449,6 +1406,18 @@ files = [
     {file = "sqlparse-0.4.3.tar.gz", hash = "sha256:69ca804846bb114d2ec380e4360a8a340db83f0ccf3afceeb1404df028f57268"},
 ]
 
+[[package]]
+name = "tblib"
+version = "1.7.0"
+description = "Traceback serialization library."
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+files = [
+    {file = "tblib-1.7.0-py2.py3-none-any.whl", hash = "sha256:289fa7359e580950e7d9743eab36b0691f0310fce64dee7d9c31065b8f723e23"},
+    {file = "tblib-1.7.0.tar.gz", hash = "sha256:059bd77306ea7b419d4f76016aef6d7027cc8a0785579b5aad198803435f882c"},
+]
+
 [[package]]
 name = "text-unidecode"
 version = "1.3"
@@ -1500,7 +1469,6 @@ files = [
 [package.dependencies]
 colorama = {version = ">=0.4.1", markers = "platform_system == \"Windows\""}
 filelock = ">=3.0.0"
-importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
 packaging = ">=14"
 pluggy = ">=0.12.0"
 py = ">=1.4.17"
@@ -1512,40 +1480,6 @@ virtualenv = ">=16.0.0,<20.0.0 || >20.0.0,<20.0.1 || >20.0.1,<20.0.2 || >20.0.2,
 docs = ["pygments-github-lexers (>=0.0.5)", "sphinx (>=2.0.0)", "sphinxcontrib-autoprogram (>=0.1.5)", "towncrier (>=18.5.0)"]
 testing = ["flaky (>=3.4.0)", "freezegun (>=0.3.11)", "pathlib2 (>=2.3.3)", "psutil (>=5.6.1)", "pytest (>=4.0.0)", "pytest-cov (>=2.5.1)", "pytest-mock (>=1.10.0)", "pytest-randomly (>=1.0.0)"]
 
-[[package]]
-name = "typed-ast"
-version = "1.5.4"
-description = "a fork of Python 2 and 3 ast modules with type comment support"
-category = "dev"
-optional = false
-python-versions = ">=3.6"
-files = [
-    {file = "typed_ast-1.5.4-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:669dd0c4167f6f2cd9f57041e03c3c2ebf9063d0757dc89f79ba1daa2bfca9d4"},
-    {file = "typed_ast-1.5.4-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:211260621ab1cd7324e0798d6be953d00b74e0428382991adfddb352252f1d62"},
-    {file = "typed_ast-1.5.4-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:267e3f78697a6c00c689c03db4876dd1efdfea2f251a5ad6555e82a26847b4ac"},
-    {file = "typed_ast-1.5.4-cp310-cp310-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:c542eeda69212fa10a7ada75e668876fdec5f856cd3d06829e6aa64ad17c8dfe"},
-    {file = "typed_ast-1.5.4-cp310-cp310-win_amd64.whl", hash = "sha256:a9916d2bb8865f973824fb47436fa45e1ebf2efd920f2b9f99342cb7fab93f72"},
-    {file = "typed_ast-1.5.4-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:79b1e0869db7c830ba6a981d58711c88b6677506e648496b1f64ac7d15633aec"},
-    {file = "typed_ast-1.5.4-cp36-cp36m-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:a94d55d142c9265f4ea46fab70977a1944ecae359ae867397757d836ea5a3f47"},
-    {file = "typed_ast-1.5.4-cp36-cp36m-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:183afdf0ec5b1b211724dfef3d2cad2d767cbefac291f24d69b00546c1837fb6"},
-    {file = "typed_ast-1.5.4-cp36-cp36m-win_amd64.whl", hash = "sha256:639c5f0b21776605dd6c9dbe592d5228f021404dafd377e2b7ac046b0349b1a1"},
-    {file = "typed_ast-1.5.4-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:cf4afcfac006ece570e32d6fa90ab74a17245b83dfd6655a6f68568098345ff6"},
-    {file = "typed_ast-1.5.4-cp37-cp37m-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:ed855bbe3eb3715fca349c80174cfcfd699c2f9de574d40527b8429acae23a66"},
-    {file = "typed_ast-1.5.4-cp37-cp37m-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:6778e1b2f81dfc7bc58e4b259363b83d2e509a65198e85d5700dfae4c6c8ff1c"},
-    {file = "typed_ast-1.5.4-cp37-cp37m-win_amd64.whl", hash = "sha256:0261195c2062caf107831e92a76764c81227dae162c4f75192c0d489faf751a2"},
-    {file = "typed_ast-1.5.4-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:2efae9db7a8c05ad5547d522e7dbe62c83d838d3906a3716d1478b6c1d61388d"},
-    {file = "typed_ast-1.5.4-cp38-cp38-macosx_11_0_arm64.whl", hash = "sha256:7d5d014b7daa8b0bf2eaef684295acae12b036d79f54178b92a2b6a56f92278f"},
-    {file = "typed_ast-1.5.4-cp38-cp38-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:370788a63915e82fd6f212865a596a0fefcbb7d408bbbb13dea723d971ed8bdc"},
-    {file = "typed_ast-1.5.4-cp38-cp38-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:4e964b4ff86550a7a7d56345c7864b18f403f5bd7380edf44a3c1fb4ee7ac6c6"},
-    {file = "typed_ast-1.5.4-cp38-cp38-win_amd64.whl", hash = "sha256:683407d92dc953c8a7347119596f0b0e6c55eb98ebebd9b23437501b28dcbb8e"},
-    {file = "typed_ast-1.5.4-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:4879da6c9b73443f97e731b617184a596ac1235fe91f98d279a7af36c796da35"},
-    {file = "typed_ast-1.5.4-cp39-cp39-macosx_11_0_arm64.whl", hash = "sha256:3e123d878ba170397916557d31c8f589951e353cc95fb7f24f6bb69adc1a8a97"},
-    {file = "typed_ast-1.5.4-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:ebd9d7f80ccf7a82ac5f88c521115cc55d84e35bf8b446fcd7836eb6b98929a3"},
-    {file = "typed_ast-1.5.4-cp39-cp39-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:98f80dee3c03455e92796b58b98ff6ca0b2a6f652120c263efdba4d6c5e58f72"},
-    {file = "typed_ast-1.5.4-cp39-cp39-win_amd64.whl", hash = "sha256:0fdbcf2fef0ca421a3f5912555804296f0b0960f0418c440f5d6d3abb549f3e1"},
-    {file = "typed_ast-1.5.4.tar.gz", hash = "sha256:39e21ceb7388e4bb37f4c679d72707ed46c2fbf2a5609b8b8ebc4b067d977df2"},
-]
-
 [[package]]
 name = "typing-extensions"
 version = "4.5.0"
@@ -1590,7 +1524,6 @@ files = [
 [package.dependencies]
 distlib = ">=0.3.6,<1"
 filelock = ">=3.4.1,<4"
-importlib-metadata = {version = ">=4.8.3", markers = "python_version < \"3.8\""}
 platformdirs = ">=2.4,<4"
 
 [package.extras]
@@ -1717,23 +1650,7 @@ files = [
     {file = "wrapt-1.15.0.tar.gz", hash = "sha256:d06730c6aed78cee4126234cf2d071e01b44b915e725a6cb439a879ec9754a3a"},
 ]
 
-[[package]]
-name = "zipp"
-version = "3.15.0"
-description = "Backport of pathlib-compatible object wrapper for zip files"
-category = "main"
-optional = false
-python-versions = ">=3.7"
-files = [
-    {file = "zipp-3.15.0-py3-none-any.whl", hash = "sha256:48904fc76a60e542af151aded95726c1a5c34ed43ab4134b597665c86d7ad556"},
-    {file = "zipp-3.15.0.tar.gz", hash = "sha256:112929ad649da941c23de50f356a2b5570c954b65150642bccdd66bf194d224b"},
-]
-
-[package.extras]
-docs = ["furo", "jaraco.packaging (>=9)", "jaraco.tidelift (>=1.4)", "rst.linker (>=1.9)", "sphinx (>=3.5)", "sphinx-lint"]
-testing = ["big-O", "flake8 (<5)", "jaraco.functools", "jaraco.itertools", "more-itertools", "pytest (>=6)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=1.3)", "pytest-flake8", "pytest-mypy (>=0.9.1)"]
-
 [metadata]
 lock-version = "2.0"
-python-versions = "^3.7.2, <4"
-content-hash = "4a5ec6b029497091d99a0f7c08bbf8d711b4a632c847998cc9dc860e49db7fc9"
+python-versions = "^3.10.9"
+content-hash = "0a9fe95f6672cb642d25e1e4c1b1686ba34f55ab4e2c3271e08b81c382892269"
diff --git a/pyproject.toml b/pyproject.toml
index 9d0c2e8..3594de3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,6 @@ license = "GPL3"
 readme = "README.md"
 
 [tool.poetry.dependencies]
-python = "^3.7.2, <4"
 dbt-core = "^1.3, <1.4"
 pyexasol = "^0.25.0"
 dbt-tests-adapter = "^1.3, <1.4"
@@ -28,6 +27,7 @@ tox = "^3.26.0"
 [tool.poetry.group.dev.dependencies]
 dbt-tests-adapter = "^1.3.2"
 pylint = "^2.15.8"
+pytest-parallel = "^0.1.1"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]
diff --git a/tox.ini b/tox.ini
index 89e6ae6..77eb7dc 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 isolated_build = True
-envlist = python3.7,py38,py39,py310
+env_list = py{37,38,39,310} 
 
 [testenv]
 passenv = *
@@ -8,4 +8,4 @@ allowlist_externals = poetry
                       pytest
 commands =
     poetry install -v
-    pytest --junitxml=report.xml tests
+    pytest --workers=auto --junitxml=report.xml tests