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Is there a function in Hiveql that is equivalent to Right() or Left() function from TSQL? For example, RIGHT(col1,10) to get the first 10 characters from col1.
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In this example we take a string and a number. Using the left function a number will be added to the left of the string. The Right string function takes two arguments. The first argument is a string value and the second argument is an integer value specifying the length.
Hive enables data summarization, querying, and analysis of data. Hive queries are written in HiveQL, which is a query language similar to SQL. Hive allows you to project structure on largely unstructured data. After you define the structure, you can use HiveQL to query the data without knowledge of Java or MapReduce.
Apache Hive Join – HiveQL Select Joins Query Basically, for combining specific fields from two tables by using values common to each one we use Hive JOIN clause. In other words, to combine records from two or more tables in the database we use JOIN clause. However, it is more or less similar to SQL JOIN.
There is no right or left function, but you can implement the same functionality with substr, like this:
left(column, nchar) = substr(column, 1* nchar)
right(column, nchar) = substr(column, (-1)* nchar)
Here nchar is number of characters.
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