Python: Introducing the SQL Connector (#10981)

### Motivation and Context

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This PR adds the Azure SQL Store and Collection
Closes #9882 


### Description

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### Contribution Checklist

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- [x] The code builds clean without any errors or warnings
- [x] The PR follows the [SK Contribution
Guidelines](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
script](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md#development-scripts)
raises no violations
- [x] All unit tests pass, and I have added new tests where possible
- [x] I didn't break anyone 😄

Author: eavanvalkenburg

python/pyproject.toml

@@ -138,6 +138,9 @@ realtime = [
     "websockets >= 13, < 16",
     "aiortc>=1.9.0",
 ]
+sql = [
+    "pyodbc >= 5.2"
+]
 
 [tool.uv]
 prerelease = "if-necessary-or-explicit"

python/samples/concepts/memory/complex_memory.py

@@ -29,6 +29,7 @@
 from semantic_kernel.connectors.memory.postgres import PostgresCollection
 from semantic_kernel.connectors.memory.qdrant import QdrantCollection
 from semantic_kernel.connectors.memory.redis import RedisHashsetCollection, RedisJsonCollection
+from semantic_kernel.connectors.memory.sql_server import SqlServerCollection
 from semantic_kernel.connectors.memory.weaviate import WeaviateCollection
 from semantic_kernel.data import (
     VectorizableTextSearchMixin,
@@ -120,7 +121,7 @@ class DataModelList:
 # Depending on the vector database, the index kind and distance function may need to be adjusted
 # since not all combinations are supported by all databases.
 # The values below might need to be changed for your collection to work.
-distance_function = DistanceFunction.EUCLIDEAN_SQUARED_DISTANCE
+distance_function = DistanceFunction.COSINE_DISTANCE
 index_kind = IndexKind.FLAT
 DataModel = get_data_model("array", index_kind, distance_function)
 
@@ -147,11 +148,14 @@ class DataModelList:
 #   The chroma collection is currently only available for in-memory versions
 #   Client-Server mode and Chroma Cloud are not yet supported.
 #   More info on Chroma here: https://docs.trychroma.com/docs/overview/introduction
+# - faiss: Faiss - in-memory with optimized indexes.
+# - pinecone: Pinecone
+# - sql_server: SQL Server, can connect to any SQL Server compatible database, like Azure SQL.
 # This is represented as a mapping from the collection name to a
 # function which returns the collection.
 # Using a function allows for lazy initialization of the collection,
 # so that settings for unused collections do not cause validation errors.
-collections: dict[str, Callable[[], VectorStoreRecordCollection[str, DataModel]]] = {
+collections: dict[str, Callable[[], VectorStoreRecordCollection]] = {
     "ai_search": lambda: AzureAISearchCollection[str, DataModel](
         data_model_type=DataModel,
     ),
@@ -204,6 +208,10 @@ class DataModelList:
         collection_name=collection_name,
         data_model_type=DataModel,
     ),
+    "sql_server": lambda: SqlServerCollection[str, DataModel](
+        data_model_type=DataModel,
+        collection_name=collection_name,
+    ),
 }