feat(add Netezza database): Add IBM Netezza support (#15450)

* Add netezza to superset

* update netezza logo

* change in logo filename

* fixing linter error

* removing stray code

docs/src/resources/data.js

@@ -235,4 +235,9 @@ export const Databases = [
     href: 'https://www.alibabacloud.com/product/hologres',
     imgName: 'hologres.png',
   },
+  {
+    title: 'IBM Netezza Performance Server',
+    href: 'https://www.ibm.com/products/netezza',
+    imgName: 'netezza.png',
+  },
 ];

setup.py

@@ -153,6 +153,7 @@ setup(
         "teradata": ["sqlalchemy-teradata==0.9.0.dev0"],
         "thumbnails": ["Pillow>=7.0.0, <8.0.0"],
         "vertica": ["sqlalchemy-vertica-python>=0.5.9, < 0.6"],
+        "netezza": ["nzalchemy>=11.0.2"],
     },
     python_requires="~=3.7",
     author="Apache Software Foundation",

superset/db_engine_specs/netezza.py

@@ -0,0 +1,40 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+from superset.db_engine_specs.postgres import PostgresBaseEngineSpec
+
+
+class NetezzaEngineSpec(PostgresBaseEngineSpec):
+
+    engine = "netezza"
+    default_driver = "nzpy"
+    engine_name = "IBM Netezza Performance Server"
+
+    _time_grain_expressions = {
+        None: "{col}",
+        "PT1S": "DATE_TRUNC('second', {col})",
+        "PT1M": "DATE_TRUNC('minute', {col})",
+        "PT1H": "DATE_TRUNC('hour', {col})",
+        "P1D": "DATE_TRUNC('day', {col})",
+        "P1W": "DATE_TRUNC('week', {col})",
+        "P1M": "DATE_TRUNC('month', {col})",
+        "P0.25Y": "DATE_TRUNC('quarter', {col})",
+        "P1Y": "DATE_TRUNC('year', {col})",
+    }
+
+    @classmethod
+    def epoch_to_dttm(cls) -> str:
+        return "(timestamp 'epoch' + {col} * interval '1 second')"