How Can I Prioritize Relevance in MySQL Fulltext Search for Different Fields?

Achieving Relevance Prioritization in MySQL Fulltext Search

When conducting fulltext searches across multiple fields, MySQL assigns equal relevance to matches found in each field. However, there may be scenarios where prioritizing certain fields is desirable, ensuring they contribute more significantly to the overall relevance score.

Solution: Create Weighted Indexes

To achieve this, create multiple fulltext indexes:

• One on the field with higher priority (e.g., keywords)
• One on the field with lower priority (e.g., content)
• One on both fields combined (e.g., keywords, content)

Example Query with Weighted Relevance

Using the MATCH (keyword) AGAINST (...) and MATCH (content) AGAINST (...) functions, you can calculate separate relevance scores for each field. The CASE statement assigns binary values to indicate whether a specific field contains the search term:

SELECT *, 
CASE WHEN Keywords LIKE '%watermelon%' THEN 1 ELSE 0 END AS keywordmatch, 
CASE WHEN Content LIKE '%watermelon%' THEN 1 ELSE 0 END AS contentmatch,

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