Common join The common join is also called reduce side join. It is a basic join in Hive and works…
Local mode Hadoop can run in standalone, pseudo-distributed, and fully distributed mode. Most of the time, we need to configure…
Hive supports TEXTFILE, SEQUENCEFILE, RCFILE, ORC, and PARQUET file formats. The three ways to specify the file format are as…
Hive partitioning is one of the most effective methods to improve the query performance on larger tables. The query with…
Hive provides an EXPLAIN command to return a query execution plan without running the query. We can use an EXPLAIN…
Analytic functions are usually used with OVER, PARTITION BY, ORDER BY, and the windowing specification. Standard aggregations – COUNT(), SUM(),…
Hive offers several built-in aggregate functions, such as MAX, MIN, AVG, and so on. Hive also supports advanced aggregation by…