Intermediate LevelSQL & MySQL
How does MySQL FULLTEXT Search work using MATCH() ... AGAINST() in Boolean Mode?
❓ Interview Prompt: Explain `FULLTEXT` indexes, `MATCH() ... AGAINST()`, Natural Language Mode vs Boolean Mode (`+must -exclude *`), and relevance scoring.
MySQL 'FULLTEXT' indexes enable fast natural language text searching across large string columns:
Modes:
1
Natural Language Mode (Default): Ranks rows based on relevance scores computed from word frequencies.
2
Boolean Mode: Evaluates complex search operators:
•
'+keyword': Must be present.
•
'-keyword': Must NOT be present.
•
'keyword*': Wildcard prefix matching.
Code Implementation Example
sql
-- Fulltext search in Boolean Mode for mandatory 'database' and excluding 'oracle'
SELECT id, title, MATCH(title, body) AGAINST('+database -oracle' IN BOOLEAN MODE) AS score
FROM articles
WHERE MATCH(title, body) AGAINST('+database -oracle' IN BOOLEAN MODE);💡Executing full-text Boolean searches with relevance scoring in MySQL.
🎯 Interview Key Takeaway
Use FULLTEXT indexes with MATCH() AGAINST() in Boolean Mode for fast text search with boolean operators.
#MySQL#FULLTEXT#MATCH AGAINST#Text Search#Intermediate
Back to all SQL & MySQL Questions→