Select/Arrange Fields in ORC Data Online
Use our free online tool to select/arrange fields in your Apache ORC data quickly
Select Fields
This tool gives you the power to customize the layout of your Apache ORC file by selecting which columns to include and rearranging their order. Whether you're trying to focus on key data, remove unnecessary fields, or change the column sequence for compatibility, it’s all possible in just a few steps. It's especially useful for preparing files for upload, creating reports, or simplifying large datasets by hiding what you don't need.
Apache ORC
Apache ORC (Optimized Row Columnar) is a self-describing, columnar file format that supports high compression ratios and fast data retrieval. ORC supports complex types, including structs, lists, maps, and unions. ORC files are divided into blocks of data (stripes) containing statistics (such as min, max, sum, and count) and lightweight indexing which can be used to skip over irrelevant data during queries. ORC also supports predicate pushdown, meaning that filters can be applied as the data is read from disk, reducing the amount of data loaded into memory and processed. Due to its high performance in terms of compression and speed of access, ORC is particularly well-suited for heavy read operations and is commonly used in data warehousing and analytics applications.