Hive Fuzzy Match Between Tables Guide

One way to perform a fuzzy matching between two tables in Hive is by using wildcard characters, such as the LIKE or RLIKE operators. Here is an example:

Assuming there are two tables, A and B, both containing a column named “name”.

To find records with similar values in the name column of tables A and B, you can use the following query:

SELECT * 
FROM A 
JOIN B 
ON A.name LIKE CONCAT('%', B.name, '%');

In this query, the LIKE operator is used for fuzzy matching to find records in table A’s name column that contain the names from table B’s name column.

Also, if you want to use regular expressions for fuzzy matching, you can use the RLIKE operator, for example:

SELECT * 
FROM A 
JOIN B 
ON A.name RLIKE CONCAT('.*', B.name, '.*');

This query will search for records in tables A and B where the value in the name column matches the regular expression.