You can apply an alias to tables, columns, or column expressions when you enter their names in a query. When making further references to the
Category: Apache Impala
DELETE Statement in Apache Impala
In OLTP databases, DELETE is one of the most commonly used DML commands. When it comes to OLAP databases, however, DELETE is used less frequently.
UPDATE Statement in Apache Impala
In OLTP databases, UPDATE is one of the most commonly used DML commands. When it comes to OLAP databases, however, UPDATE is used less frequently.
Impala SQL Statements
The Impala SQL dialect has a number of common features as well as certain additions for Big Data use cases such as data loading and
Loading Data In Apache Impala
In Apache Impala, similar to Hive, the LOAD command can be used to import data into tables. The source files might be in text, csv,
Operators in Apache Impala
SQL operators are a type of comparison function that is commonly used in SELECT statements’ WHERE clauses. Arithmetic Operators BETWEEN Operator Comparison Operators EXISTS Operator
Big Data & SQL 