To create a full-text search index on the content column of the posts table using to_tsvector with the default English configuration, which of the following is the correct SQL statement?
hard📝 Application Q8 of 15
PostgreSQL - Full-Text Search
To create a full-text search index on the content column of the posts table using to_tsvector with the default English configuration, which of the following is the correct SQL statement?
ACREATE INDEX idx_posts_content ON posts USING GIN (to_tsvector(content));
BCREATE INDEX idx_posts_content ON posts USING BTREE (to_tsvector(content));
CCREATE INDEX idx_posts_content ON posts USING GIN (to_tsvector('english', content));
DCREATE INDEX idx_posts_content ON posts USING HASH (to_tsvector('english', content));
Step-by-Step Solution
Solution:
Step 1: Identify correct index type
Full-text search indexes use GIN indexes, not BTREE or HASH.
Step 2: Check to_tsvector syntax
to_tsvector requires language configuration as first argument for proper parsing.
Step 3: Validate options
CREATE INDEX idx_posts_content ON posts USING GIN (to_tsvector('english', content)); uses GIN and specifies 'english' language, which is correct.
Final Answer:
CREATE INDEX idx_posts_content ON posts USING GIN (to_tsvector('english', content)); -> Option C
Quick Check:
Use GIN with to_tsvector and language config [OK]
Quick Trick:Use GIN index with to_tsvector and language [OK]
Common Mistakes:
Using BTREE or HASH instead of GIN
Omitting language configuration
Incorrect function argument order
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