Author: lochan2014
Here’s an enhanced Spark SQL cheatsheet with additional details, covering join types, union types, and set operations like EXCEPT and INTERSECT, along with options for table management (DDL operations like UPDATE, INSERT, DELETE, etc.). This comprehensive sheet is designed to help with quick Spark SQL reference. Category Concept Syntax / Example Description Basic Statements SELECT SELECT col1, col2 FROM table WHERE…
Comparative overview of partitions, bucketing, segmentation, and broadcasting in PySpark, Spark SQL, and Hive QL in tabular form, along with examples Here’s a comparative overview of partitions, bucketing, segmentation, and broadcasting in PySpark, Spark SQL, and Hive QL in tabular form, along with examples: Concept PySpark Spark SQL Hive QL Partitions df.repartition(numPartitions, “column”) creates partitions based on specified column. CREATE TABLE table_name PARTITIONED BY (col1 STRING) allows data to be organized by partition. ALTER TABLE…