PostgreSQL - Indexing Strategies
Which operator class is commonly used with GiST indexes for full-text search in PostgreSQL?
Which operator class is commonly used with GiST indexes for full-text search in PostgreSQL?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Identify operator classes for GiST
For full-text search, the trigram operator classgist_trgm_opsis commonly used to speed up similarity searches.Step 2: Eliminate unrelated options
gist_int_opsis for integers,gist_box_opsfor geometric boxes, andgist_text_opsis not a standard operator class.Final Answer:
gist_trgm_ops -> Option DQuick Check:
Full-text GiST operator class = gist_trgm_ops [OK]
Quick Trick: Use gist_trgm_ops for text similarity with GiST [OK]
Common Mistakes:
- Choosing gist_text_ops which does not exist
- Confusing geometric operator classes with text ones
- Using integer operator classes for text data
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