Tell us what are the different types of subqueries?
Submitted by: MuhammadThere are two types of subqueries: correlated and uncorrelated.
An uncorrelated subquery is a independent query whose output is substituted into the main query. A correlated subquery, on the other hand, uses values from the outer query and therefore depends on the outer query. Such a subquery executes repeatedly, once for each row that is selected by the outer query.
Submitted by: Muhammad
An uncorrelated subquery is a independent query whose output is substituted into the main query. A correlated subquery, on the other hand, uses values from the outer query and therefore depends on the outer query. Such a subquery executes repeatedly, once for each row that is selected by the outer query.
Submitted by: Muhammad
Read Online Database Analyst Job Interview Questions And Answers
Top Database Analyst Questions
| ☺ | Tell me what is the IN operator? |
| ☺ | Please explain what is the difference between UNION and UNION ALL? |
| ☺ | Explain me about a time when you could not meet a deadline? |
| ☺ | Tell us why did you go into data analysis? |
| ☺ | Tell us when might someone denormalize their data? |
Top Databases Programming Categories
| ☺ | RDBMS Interview Questions. |
| ☺ | SQL Interview Questions. |
| ☺ | SSRS Interview Questions. |
| ☺ | Database Administrator (DBA) Interview Questions. |
| ☺ | Sybase Interview Questions. |
