﻿ SQL: Calculate the average price of all products of the manufacturer whose code is 16 - w3resource

# SQL: Calculate the average price of all products of the manufacturer whose code is 16

## SQL Basic Select Statement: Exercise-26 with Solution.

From the following table, write a SQL query to calculate the average price for a manufacturer code of 16. Return avg.

Sample table: item_mast

Sample Solution:

``````SELECT AVG(pro_price) FROM item_mast
WHERE pro_com=16;
``````

Output of the Query:

```avg
500.0000000000000000
```

Relational Algebra Expression:

Relational Algebra Tree:

## Query Visualization:

Duration:

Rows:

Cost:

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## SQL: Tips of the Day

Nested select statement in SQL Server.

You need to alias the subquery.

```SELECT name FROM (SELECT name FROM agentinformation) a
```

or to be more explicit

```SELECT a.name FROM (SELECT name FROM agentinformation) a
```

Database: SQL Server

Ref: https://bit.ly/3Qruiu5