The left operand must be a tsvector, not text

The right operand should be to_tsvector, not to_tsquery

The operator @@ cannot be used in WHERE clauses

Solution:Step 1: Check operand typesThe @@ operator requires the left operand to be tsvector.Step 2: Identify the column typeHere, text is a plain text column, not tsvector.Step 3: Correct usageYou must convert text to tsvector using to_tsvector(text) before using @@.Final Answer:The left operand mu

[Solved] Examine this query:SELECT * FROM docs WHERE text @@ to_tsquery('search');Assuming text is a text column, what is the issue? | PostgreSQL

PostgreSQL - Full-Text Search

Examine this query:
SELECT * FROM docs WHERE text @@ to_tsquery('search');
Assuming text is a text column, what is the issue?

AThe right operand should be <code>to_tsvector</code>, not <code>to_tsquery</code>

BThe left operand must be a <code>tsvector</code>, not <code>text</code>

CThe operator <code>@@</code> cannot be used in WHERE clauses

DThe query is correct as written

Step-by-Step Solution

Solution:

Step 1: Check operand types
The @@ operator requires the left operand to be tsvector.
Step 2: Identify the column type
Here, text is a plain text column, not tsvector.
Step 3: Correct usage
You must convert text to tsvector using to_tsvector(text) before using @@.
Final Answer:
The left operand must be a tsvector, not text -> Option B
Quick Check:
Left side must be tsvector [OK]

Quick Trick: Left operand must be tsvector, not text [OK]

Common Mistakes:

Using text column directly without conversion
Confusing to_tsquery and to_tsvector functions
Assuming @@ works with plain text

Master "Full-Text Search" in PostgreSQL

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Visual Try Challenge Project Recall Time

Examine this query:

Step 1: Check operand types

Step 2: Identify the column type

Step 3: Correct usage

Final Answer:

Quick Check:

Want More Practice?