Pin toolchain version in CI

Author: SergeiPatiakin

.github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
       - name: Install minimal nightly with clippy and rustfmt
         uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: nightly
+          toolchain: nightly-2025-01-23
           components: rustfmt, clippy
 
       - name: Install tool for formatting Cargo.toml files

README.md

@@ -11,17 +11,30 @@ Load data from Parquet and Postgres to Delta Lake
 
 Download the binary from the [Releases page](./releases)
 
-To load data from Postgres to Delta Lake:
+Load data from Postgres to Delta Lake:
 
 ```bash
 export PGPASSWORD="my_password"
-./lakehouse-loader pg-to-delta postgres://test-user@localhost:5432/test-db -q "SELECT * FROM some_table" s3://my-bucket/path/to/table
+./lakehouse-loader pg-to-delta postgres://test-user@localhost:5432/test-db -q "SELECT * FROM some_table" s3://my-bucket/path/to/delta/table
 ```
 
-To load data from Parquet to Delta Lake:
+Load data from Parquet to Delta Lake:
 
 ```bash
-./lakehouse-loader parquet-to-delta some_file.parquet s3://my-bucket/path/to/table
+./lakehouse-loader parquet-to-delta some_file.parquet s3://my-bucket/path/to/delta/table
+```
+
+Load data from Postgres to Iceberg File Catalog:
+
+```bash
+export PGPASSWORD="my_password"
+./lakehouse-loader pg-to-iceberg postgres://test-user@localhost:5432/test-db -q "SELECT * FROM some_table" s3://my-bucket/path/to/iceberg/table
+```
+
+Load data from Parquet to Iceberg File Catalog:
+
+```bash
+./lakehouse-loader parquet-to-iceberg some_file.parquet s3://my-bucket/path/to/iceberg/table
 ```
 
 Supports standard AWS environment variables (e.g. AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_PROFILE, AWS_ENDPOINT etc).

src/delta_destination.rs

@@ -441,7 +441,7 @@ pub async fn record_batches_to_delta(
     .await?;
 
     let delta_schema = deltalake::kernel::Schema::try_from(schema)?;
-    let table_name = target_url.path_segments().unwrap().last().unwrap();
+    let table_name = target_url.path_segments().unwrap().next_back().unwrap();
 
     let table = CreateBuilder::new()
         .with_log_store(log_store.clone())