Rename exmaple

Author: alamb

datafusion-examples/README.md

@@ -45,6 +45,7 @@ cargo run --example csv_sql
 - [`advanced_udaf.rs`](examples/advanced_udaf.rs): Define and invoke a more complicated User Defined Aggregate Function (UDAF)
 - [`advanced_udf.rs`](examples/advanced_udf.rs): Define and invoke a more complicated User Defined Scalar Function (UDF)
 - [`advanced_udwf.rs`](examples/advanced_udwf.rs): Define and invoke a more complicated User Defined Window Function (UDWF)
+- ['advanced_parquet_index.rs'](examples/advanced_parquet_index.rs): Creates a detailed secondary index that covers the contents of several parquet files
 - [`avro_sql.rs`](examples/avro_sql.rs): Build and run a query plan from a SQL statement against a local AVRO file
 - [`catalog.rs`](examples/catalog.rs): Register the table into a custom catalog
 - [`csv_sql.rs`](examples/csv_sql.rs): Build and run a query plan from a SQL statement against a local CSV file
@@ -62,7 +63,6 @@ cargo run --example csv_sql
 - [`make_date.rs`](examples/make_date.rs): Examples of using the make_date function
 - [`memtable.rs`](examples/memtable.rs): Create an query data in memory using SQL and `RecordBatch`es
 - ['parquet_index.rs'](examples/parquet_index.rs): Create an secondary index over several parquet files and use it to speed up queries
-- ['parquet_index_advanced.rs'](examples/parquet_index.rs): Create a detailed secondary index that covers the contents of several parquet files
 - [`parquet_sql.rs`](examples/parquet_sql.rs): Build and run a query plan from a SQL statement against a local Parquet file
 - [`parquet_sql_multiple_files.rs`](examples/parquet_sql_multiple_files.rs): Build and run a query plan from a SQL statement against multiple local Parquet files
 - ['parquet_exec_visitor.rs'](examples/parquet_exec_visitor.rs): Extract statistics by visiting an ExecutionPlan after execution

datafusion-examples/examples/parquet_index_advanced.rs renamed to datafusion-examples/examples/advanced_parquet_index.rs

@@ -187,9 +187,9 @@ pub use writer::plan_to_parquet;
 /// let exec = ParquetExec::builder(file_scan_config).build();
 /// ```
 ///
-/// For a complete example, see the [`parquet_index_advanced` example]).
+/// For a complete example, see the [`advanced_parquet_index` example]).
 ///
-/// [`parquet_index_advanced` example]: https://github.com/apache/datafusion/blob/main/datafusion-examples/examples/parquet_index_advanced.rs
+/// [`parquet_index_advanced` example]: https://github.com/apache/datafusion/blob/main/datafusion-examples/examples/advanced_parquet_index.rs
 ///
 /// # Execution Overview
 ///