chore(docs): Update vector store notebook (#96)

* Update vector_store.ipynb

1.  Added Installation of  additional dependencies "langchain-google-vertexai" it is needed for text embedding generation.

2.  Set "GOOGLE_CLOUD_PROJECT" env variable for  PROJECT_ID, it is needed for table creation / SQL execution in vector_store module.

3.  Specified "id_column" value as "row_id", to match it with table creation in "init_vector_store_table" function, if  "id_column" is not set then default value is "langchain_id"

* Update docs/vector_store.ipynb

Co-authored-by: Averi Kitsch <akitsch@google.com>

---------

Co-authored-by: Averi Kitsch <akitsch@google.com>

Author: vmanghnani

docs/vector_store.ipynb

@@ -52,7 +52,7 @@
     }
    ],
    "source": [
-    "%pip install --upgrade --quiet langchain-google-spanner"
+    "%pip install --upgrade --quiet langchain-google-spanner langchain-google-vertexai"
    ]
   },
   {
@@ -124,7 +124,8 @@
     "PROJECT_ID = \"my-project-id\"  # @param {type:\"string\"}\n",
     "\n",
     "# Set the project id\n",
-    "!gcloud config set project {PROJECT_ID}"
+    "!gcloud config set project {PROJECT_ID}\n",
+    "%env GOOGLE_CLOUD_PROJECT={PROJECT_ID}"
    ]
   },
   {
@@ -194,14 +195,16 @@
     "    instance_id=INSTANCE,\n",
     "    database_id=DATABASE,\n",
     "    table_name=TABLE_NAME,\n",
-    "    id_column=\"row_id\",\n",
-    "    metadata_columns=[\n",
-    "        TableColumn(name=\"metadata\", type=\"JSON\", is_null=True),\n",
-    "        TableColumn(name=\"title\", type=\"STRING(MAX)\", is_null=False),\n",
-    "    ],\n",
-    "    secondary_indexes=[\n",
-    "        SecondaryIndex(index_name=\"row_id_and_title\", columns=[\"row_id\", \"title\"])\n",
-    "    ],\n",
+    "    # Customize the table creation\n",
+    "    # id_column=\"row_id\",\n",
+    "    # content_column=\"content_column\",\n",
+    "    # metadata_columns=[\n",
+    "    #     TableColumn(name=\"metadata\", type=\"JSON\", is_null=True),\n",
+    "    #     TableColumn(name=\"title\", type=\"STRING(MAX)\", is_null=False),\n",
+    "    # ],\n",
+    "    # secondary_indexes=[\n",
+    "    #     SecondaryIndex(index_name=\"row_id_and_title\", columns=[\"row_id\", \"title\"])\n",
+    "    # ],\n",
     ")"
    ]
   },
@@ -262,9 +265,11 @@
     "    instance_id=INSTANCE,\n",
     "    database_id=DATABASE,\n",
     "    table_name=TABLE_NAME,\n",
-    "    ignore_metadata_columns=[],\n",
     "    embedding_service=embeddings,\n",
-    "    metadata_json_column=\"metadata\",\n",
+    "    # Connect to a custom vector store table\n",
+    "    # id_column=\"row_id\",\n",
+    "    # content_column=\"content\",\n",
+    "    # metadata_columns=[\"metadata\", \"title\"],\n",
     ")"
    ]
   },