[Solved] Which of the following is the correct syntax to start a CTE in PostgreSQL? — Ans: WITH cte_name AS (SELECT * FROM table_name) | PostgreSQL

PostgreSQL - Common Table Expressions

Which of the following is the correct syntax to start a CTE in PostgreSQL?

AWITH cte_name AS (SELECT * FROM table_name)

BCREATE CTE cte_name SELECT * FROM table_name

CDEFINE cte_name AS SELECT * FROM table_name

DSTART CTE cte_name (SELECT * FROM table_name)

Step-by-Step Solution

Solution:

Step 1: Recall CTE syntax
In PostgreSQL, a CTE starts with the keyword WITH followed by the CTE name and AS, then the query in parentheses.
Step 2: Check each option
Only WITH cte_name AS (SELECT * FROM table_name) matches the correct syntax. Options A, C, and D use invalid keywords or structure.
Final Answer:
WITH cte_name AS (SELECT * FROM table_name) -> Option A
Quick Check:
CTE starts with WITH ... AS (...) = B [OK]

Quick Trick: CTEs always start with WITH keyword [OK]

Common Mistakes:

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Which of the following is the correct syntax to start a CTE in PostgreSQL?