when inserting value in vector data type, parameter needs to be converted to nvarchar max. Otherwise it is getting treated as nText and throwing conversion error.

Hybrid-Search/hybrid_search.py

@@ -35,7 +35,8 @@
 
         for id, (content, embedding) in enumerate(zip(sentences, embeddings)):
             cursor.execute(f"""
-                INSERT INTO dbo.documents (id, content, embedding) VALUES (?, ?, CAST(? AS VECTOR(384)));
+                INSERT INTO dbo.documents (id, content, embedding)
+                VALUES (?, ?, CAST(CAST(? as NVARCHAR(MAX)) AS VECTOR(384)));
             """,
             id,
             content, 
@@ -59,7 +60,7 @@
         results  = cursor.execute(f"""
             DECLARE @k INT = ?;
             DECLARE @q NVARCHAR(1000) = ?;
-            DECLARE @v VECTOR(384) = CAST(? AS VECTOR(384));
+            DECLARE @v VECTOR(384) = CAST(CAST(? as NVARCHAR(MAX)) AS VECTOR(384));
             WITH keyword_search AS (
                 SELECT TOP(@k)
                     id, 

Langchain-SQL-RAG/.env.sample

@@ -0,0 +1,19 @@
+
+# Azure OpenAI Service details
+AZURE_ENDPOINT="https://<yourdeployment>.openai.azure.com/"
+AZURE_DEPLOYMENT_EMBEDDING_NAME="<embeddingmodeldeploymentname"
+AZURE_DEPLOYMENT_CHATCOMPLETION_NAME="<chatcompletionmodeldeploymentname>"
+AZURE_API_VERSION="2023-05-15"
+AZURE_API_KEY="<yourkey"
+
+
+#Blob Storage Account details
+AZURE_CONN_STR="DefaultEndpointsProtocol=https;AccountName=<YourBlobName>;AccountKey=<YourAccountKey>;EndpointSuffix=core.windows.net"
+AZURE_CONTAINER_NAME="YourContainerName"
+
+# Use only one of the below. The one you are not using should be commented out.
+# For Entra ID Service Principle Authentication
+ENTRA_CONNECTION_STRING="Driver={ODBC Driver 18 for SQL Server};LongAsMax=yes;Server=tcp:<yourdbserver>.database.windows.net;Database=<yourdbname>;"
+
+# For SQL Authentication
+SQL_CONNECTION_STRING="Driver={ODBC Driver 18 for SQL Server};LongAsMax=yes;Server=tcp:<yourserver>.database.windows.net;Database=<database>;Uid=<your-username>;Pwd=<your-password>;"

Langchain-SQL-RAG/.gitignore

@@ -0,0 +1,21 @@
+*.pdf
+*.docx
+*.doc
+*.xls
+*.xlsx
+*.ppt
+*.pptx
+*.txt
+*.csv
+*.jpg
+*.jpeg
+*.png
+*.gif
+*.bmp
+*.tif
+*.tiff
+*.svg
+*.eps
+*.ai
+*.psd
+*.env