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You created a GIN index on to_tsvector('english', content) but your full-text search queries are still slow. Which of the following is a likely cause?

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PostgreSQL - Full-Text Search
You created a GIN index on to_tsvector('english', content) but your full-text search queries are still slow. Which of the following is a likely cause?
AYou used a GIN index instead of a BTREE index
BYou forgot to use the to_tsvector function in your WHERE clause
CYour table has too few rows for indexing to help
DYou created the index on the wrong column type
Step-by-Step Solution
Solution:
  1. Step 1: Check query usage of to_tsvector

    For the GIN index on to_tsvector to be used, the query must also use to_tsvector on the column in the WHERE clause.
  2. Step 2: Understand index usage

    If the query uses plain text or different functions, the index won't be used, causing slow searches.
  3. Final Answer:

    You forgot to use the to_tsvector function in your WHERE clause -> Option B
  4. Quick Check:

    Query must match index expression [OK]
Quick Trick: Query must use to_tsvector to use GIN index [OK]
Common Mistakes:
  • Assuming GIN is always faster regardless of query
  • Using BTREE index for full-text search
  • Ignoring index expression mismatch

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