SQL: Display the average price of the items for each company
SQL Basic Select Statement: Exercise-29 with Solution.
From the following table, write a SQL query to calculate average price of the items for each company. Return average price and company code.
Sample table: item_mast
Sample Solution:
SELECT AVG(pro_price), pro_com
FROM item_mast
GROUP BY pro_com;
Output of the Query:
avg pro_com 250.0000000000000000 14 650.0000000000000000 12 3200.0000000000000000 15 5000.0000000000000000 11 1475.0000000000000000 13 500.0000000000000000 16
Relational Algebra Expression:
Relational Algebra Tree:
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Query Visualization:
Duration:
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Previous: From the following table, write a SQL query to find the items whose prices are higher than or equal to $250. Order the result by product price in descending, then product name in ascending. Return pro_name and pro_price.
Next: From the following table, write a SQL query to find the cheapest item(s). Return pro_name and, pro_price.
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SQL: Tips of the Day
SQL Server SELECT into existing table.
INSERT INTO dbo.TABLETWO SELECT col1, col2 FROM dbo.TABLEONE WHERE col3 LIKE @search_key
This assumes there's only two columns in dbo.TABLETWO - you need to specify the columns otherwise:
INSERT INTO dbo.TABLETWO (col1, col2) SELECT col1, col2 FROM dbo.TABLEONE WHERE col3 LIKE @search_key
Database: SQL Server
Ref: https://bit.ly/3y6tpA3
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