What is a CTE (Common Table Expression), and how is it different from a subquery?
Answers were Sorted based on User's Feedback
Answer / nashiinformaticssolutions
• CTE: Temporary result set defined using WITH and reusable within the query. Improves readability for complex queries.
• Subquery: Nested query executed each time it is called. Example:
WITH SalesCTE AS (
SELECT employee_id, SUM(sales) AS total_sales
FROM sales
GROUP BY employee_id
)
SELECT * FROM SalesCTE WHERE total_sales > 5000;
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / glibwaresoftsolutions
• CTE: Temporary result set defined using WITH and reusable within the query. Improves readability for complex queries.
• Subquery: Nested query executed each time it is called. Example:
WITH SalesCTE AS (
SELECT employee_id, SUM(sales) AS total_sales
FROM sales
GROUP BY employee_id
)
SELECT * FROM SalesCTE WHERE total_sales > 5000;
| Is This Answer Correct ? | 0 Yes | 0 No |
• CTE: Temporary result set defined using WITH and reusable within the query. Improves readability for complex queries.
• Subquery: Nested query executed each time it is called. Example:
WITH SalesCTE AS (
SELECT employee_id, SUM(sales) AS total_sales
FROM sales
GROUP BY employee_id
)
SELECT * FROM SalesCTE WHERE total_sales > 5000;
| Is This Answer Correct ? | 0 Yes | 0 No |
What is rank dense_rank and partition in sql?
Is sql easier than java?
What are expressions?
how to insert the data through views? The view is depending upon more than two tables? how to update materalized views?
Give an example of Full Outer Join?
What is the difference between inner join and natural join?
How would you hide a table in sql. ie the table can be only visible to its maker?
define data blocks ? : Sql dba
How do I know if I have sql express or standard?
What is difference between hql and native sql?
What are field types?
what is the difference between a having clause and a where clause? : Sql dba
Oracle (3259)
SQL Server (4518)
MS Access (429)
MySQL (1402)
Postgre (483)
Sybase (267)
DB Architecture (141)
DB Administration (291)
DB Development (113)
SQL PLSQL (3330)
MongoDB (502)
IBM Informix (50)
Neo4j (82)
InfluxDB (0)
Apache CouchDB (44)
Firebird (5)
Database Management (1411)
Databases AllOther (288)