MySQL Full-Text Search in Subquery with Solution

Using Full-Text Search in a Subquery

Write a MySQL query to use a subquery that retrieves ArticleIDs matching "machine learning" and then fetch complete details for those articles.

Solution:

-- Use a subquery to find ArticleIDs matching 'machine learning' and retrieve full details.
-- The outer query retrieves all columns from the Articles table for the matching ArticleIDs.
SELECT * 
FROM Articles
-- The WHERE clause filters rows where the ArticleID matches the results of the subquery.
WHERE ArticleID IN (
    -- The subquery identifies ArticleIDs where the Content column matches the full-text search term 'machine learning'.
    SELECT ArticleID 
    FROM Articles
    -- The MATCH function performs a full-text search on the Content column for the term 'machine learning'.
    WHERE MATCH(Content) AGAINST('machine learning')
);

Explanation:

• Purpose of the Query:
• To demonstrate incorporating full-text search within a subquery.
• Retrieves complete article details based on a preliminary search filter.
• Key Components:
• The inner subquery performs the full-text search.
• The outer query retrieves the full row details.
• Real-World Application:
• Useful for modular queries where search and data retrieval are separated for clarity.

Notes:

• Subqueries can impact performance; consider JOINs if necessary.
• Ensure the full-text index is applied in the subquery.

For more Practice: Solve these Related Problems:

• Write a MySQL query that uses a subquery to retrieve ArticleIDs matching "machine learning" via full-text search, and then fetch complete details for those articles.
• Write a MySQL query that incorporates a subquery to filter ArticleIDs where the Content column matches "artificial intelligence" and retrieves the full records.
• Write a MySQL query to first select ArticleIDs from articles containing "deep learning" using full-text search, then use these IDs to join with another table for additional details.
• Write a MySQL query employing a subquery to extract ArticleIDs from articles that match "neural networks" in the Content column, and then select all corresponding columns from the main table.

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Previous MySQL Exercise: Limiting Full-Text Search Results.
Next MySQL Exercise: Searching for Exact Phrases Using Quoted Strings.