You want to create a search index on a column content in table articles using to_tsvector with French language rules. Which SQL statement correctly creates a GIN index for fast full-text search?
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PostgreSQL - Full-Text Search
You want to create a search index on a column content in table articles using to_tsvector with French language rules. Which SQL statement correctly creates a GIN index for fast full-text search?
ACREATE INDEX idx_articles_content ON articles USING gin(to_tsvector('french', content));
BCREATE INDEX idx_articles_content ON articles USING btree(to_tsvector('french', content));
CCREATE INDEX idx_articles_content ON articles USING gin(to_tsvector(content, 'french'));
DCREATE INDEX idx_articles_content ON articles USING gin(to_tsvector('english', content));
Step-by-Step Solution
Solution:
Step 1: Understand index type for full-text search
GIN indexes are used for fast full-text search with to_tsvector.
Step 2: Check language and syntax correctness
CREATE INDEX idx_articles_content ON articles USING gin(to_tsvector('french', content)); uses 'french' language correctly and GIN index type. CREATE INDEX idx_articles_content ON articles USING btree(to_tsvector('french', content)); uses wrong index type. CREATE INDEX idx_articles_content ON articles USING gin(to_tsvector(content, 'french')); has wrong argument order. CREATE INDEX idx_articles_content ON articles USING gin(to_tsvector('english', content)); uses wrong language.
Final Answer:
CREATE INDEX idx_articles_content ON articles USING gin(to_tsvector('french', content)); -> Option A
Quick Check:
GIN + correct language + to_tsvector syntax [OK]
Quick Trick:Use GIN index with to_tsvector('language', column) [OK]
Common Mistakes:
Using wrong index type like btree
Swapping language and column arguments
Using wrong language for the data
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