Full-Text Query: Exploring More Queries

Overview

Full-text queries involve analyzing the query text before matching it with the inverted index, and they’re primarily used with text fields. Among full-text queries, the match query is a commonly used one. However, it is important to note that there are other full-text queries that can be equally valuable and useful in different scenarios. In this lesson, we will explore some of these query types, which are:

• Match phrase
• Match phrase prefix
• Multi-match

Match phrase query

The match phrase query is a type of query that is designed to search for exact sequences of terms or phrases within a document. It is useful when we want to find documents that contain a specific phrase in a specific order.

The match phrase query analyzes the input text and searches for documents that contain the exact sequence of terms as specified in the query. It takes into account the position of the terms and the order in which they appear within the analyzed text.

For instance, when searching for the phrase "quick brown fox", the document "The quick brown fox jumps over a lazy dog" is considered a match. This is because it contains the exact sequence of terms in the specified order: "quick", "brown", and "fox".

In contrast, the document "A fox is quick and brown" will not be considered a match. Although it includes the terms "quick", "brown", and "fox", the term "fox" is not in the correct order or in proximity to the other terms as required by the query.

Note: The phrase "quick brown fast fox" is not considered an exact match for the query "quick brown fox" because the term "fast" appears between "brown" and "fox", deviating from the expected order. The match phrase query requires the terms to be in the exact specified order for a match to occur.

Match phrase prefix query

The match phrase prefix query is a versatile and powerful search feature that combines the functionalities of the match phrase and prefix queries. It allows for searching documents that contain a specific phrase prefix, ensuring that the words in the provided text appear in the exact order. The query treats the last term as a prefix, matching any words that start with that term. The match phrase prefix query is particularly useful when looking for documents that match a specific phrase while accommodating variations at the end of the phrase. It is commonly used in scenarios where ...