community: Problem with embeddings in new versions of clickhouse. (la…

…ngchain-ai#26041)

Starting with Clickhouse version 24.8, a different type of configuration
has been introduced in the vectorized data ingestion, and if this
configuration occurs, an error occurs when generating the table. As can
be seen below:

![Screenshot from 2024-09-04
11-48-00](https://github.com/user-attachments/assets/70840a93-1001-490c-921a-26924c51d9eb)

---------

Co-authored-by: Erick Friis <[email protected]>

libs/community/langchain_community/vectorstores/clickhouse.py

@@ -309,6 +309,14 @@ def __init__(
             **kwargs,
         )
         # Enable JSON type
+        try:
+            self.client.command("SET allow_experimental_json_type=1")
+        except Exception as _:
+            logger.debug(
+                f"Clickhouse version={self.client.server_version} - "
+                "There is no allow_experimental_json_type parameter."
+            )
+
         self.client.command("SET allow_experimental_object_type=1")
         if self.config.index_type:
             # Enable index

libs/community/langchain_community/vectorstores/myscale.py

@@ -193,6 +193,13 @@ def __init__(
             password=self.config.password,
             **kwargs,
         )
+        try:
+            self.client.command("SET allow_experimental_json_type=1")
+        except Exception as _:
+            logger.debug(
+                f"Clickhouse version={self.client.server_version} - "
+                "There is no allow_experimental_json_type parameter."
+            )
         self.client.command("SET allow_experimental_object_type=1")
         self.client.command(schema_)