What is wrong in this query:

Select * from Orders where OrderID=(select OrderID from OrderItems where ItemQty>50)

A wholesale merchant shop needs a report about the sale where total sale of the day is more than $50,000. Which of the following will fulfill this requirement?

Which clause should be used to display the rows of a table in ascending order of a particular column?

Which of the following holds true when creating the function for a PL/pgSQL call handler, and installing PL/pgSQL in the default directory?

Which of the following is not a single value function?

What is the correct order of clauses in the select statement?

1        select

2        order by

3        where

4        having

5        group by

To restore a PostgreSQL backup created with pg_dump, the following may be used:

What does MCV stand for?

PostgreSQL supports Index Only Scans.

Which statement is true about PostgreSQL data types?

True or False? Dynamic Tracing is enabled by default at compile time.