[Solved] Given the table articles with a column content containing 'PostgreSQL is a powerful database system.', what is the output of this query?SELECT ts_headline(content, 'database') FROM articles; | PostgreSQL

PostgreSQL - Full-Text Search

Given the table articles with a column content containing 'PostgreSQL is a powerful database system.', what is the output of this query?

SELECT ts_headline(content, 'database') FROM articles;

APostgreSQL is a powerful <em>database</em> system.

BPostgreSQL is a powerful database system.

CPostgreSQL is a powerful <b>database</b> system.

DError: ts_headline requires a tsquery type

Step-by-Step Solution

Solution:

Step 1: Understand ts_headline output
By default, ts_headline highlights matched words with tags.
Step 2: Analyze the query and text
The word 'database' matches the query 'database', so it will be wrapped in tags.
Final Answer:
PostgreSQL is a powerful database system. -> Option C
Quick Check:
Highlight uses tags = A [OK]

Quick Trick: Matched words get tags by default in ts_headline [OK]

Common Mistakes:
Expecting no tags or different tags like
Thinking ts_headline returns plain text without highlights
Assuming ts_headline needs explicit tsquery always

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More PostgreSQL Quizzes

Given the table articles with a column content containing 'PostgreSQL is a powerful database system.', what is the output of this query?

Step 1: Understand ts_headline output

Step 2: Analyze the query and text

Final Answer:

Quick Check:

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