[Solved] Find the issue in this query:SELECT ts_rank(to_tsvector(text), to_tsquery('keyword')) AS rank FROM docs WHERE rank > 0.2; | PostgreSQL

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Find the issue in this query:

SELECT ts_rank(to_tsvector(text), to_tsquery('keyword')) AS rank FROM docs WHERE rank > 0.2;

Ato_tsquery should be replaced with plainto_tsquery

BYou cannot use the alias 'rank' in the WHERE clause of the same query

Cto_tsvector requires a language parameter

Dts_rank cannot be used in SELECT statements

Step-by-Step Solution

Solution:

Step 1: Understand alias usage
Aliases defined in SELECT cannot be referenced in WHERE; use a subquery or repeat expression.
Step 2: Check other options
to_tsquery should be replaced with plainto_tsquery is optional, not an error; to_tsvector requires a language parameter is optional as default language is used; ts_rank cannot be used in SELECT statements is false.
Final Answer:
You cannot use the alias 'rank' in the WHERE clause of the same query -> Option B
Quick Check:
Is alias usable in WHERE? No. [OK]

Quick Trick: Aliases can't be used in WHERE, use subquery or repeat expression [OK]

Common Mistakes:

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