mysql如何实现搜索推荐算法

SELECT sa.keyword, COUNT(*) as score
FROM search_actions sa
WHERE sa.user_id IN (
    SELECT DISTINCT sa2.user_id
    FROM search_actions sa1
    JOIN search_actions sa2 ON sa1.keyword = sa2.keyword
    WHERE sa1.user_id = 'A' AND sa2.user_id != 'A'
)
AND sa.keyword NOT IN (
    SELECT keyword FROM search_actions WHERE user_id = 'A'
)
GROUP BY sa.keyword
ORDER BY score DESC
LIMIT 10;

SELECT keyword, SUM(click_count) as total_clicks
FROM search_log
WHERE create_time >= DATE_SUB(NOW(), INTERVAL 7 DAY)
GROUP BY keyword
ORDER BY total_clicks DESC
LIMIT 10;

CREATE TABLE keyword_similarity (
    keyword VARCHAR(50),
    similar_keyword VARCHAR(50),
    score FLOAT,
    PRIMARY KEY (keyword, similar_keyword)
);

SELECT similar_keyword, score
FROM keyword_similarity
WHERE keyword = '手机'
ORDER BY score DESC
LIMIT 10;

SELECT keyword, popularity
FROM search_suggestions
WHERE keyword LIKE 'shouji%'
ORDER BY popularity DESC
LIMIT 10;