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SQL Exercises: Count all orders for a specific date

SQL Aggregate Functions: Exercise-18 with Solution

From the following table, write a SQL query to count all the orders generated on '2012-08-17'. Return number of orders.

Sample table: orders


Sample Solution:

SELECT COUNT(*) 
FROM orders 
WHERE ord_date='2012-08-17';

Output of the Query:

count
2

Relational Algebra Expression:

Relational Algebra Expression: Count all orders of a specific date.

Relational Algebra Tree:

Relational Algebra Tree: Count all orders of a specific date.

Explanation:

Syntax of count all order in a specified date

Pictorial presentation:

Count all order in a specified date

Practice Online


Query Visualization:

Duration:

Query visualization of Count all orders of a specific date - Duration

Rows:

Query visualization of Count all orders of a specific date - Rows

Cost:

Query visualization of Count all orders of a specific date - Cost

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Previous: From the following table, write a SQL query to find the maximum order (purchase) amount generated by each salesperson. Filter the rows for the salesperson ID is in the range 5003 and 5008 (Begin and end values are included.). Return salesperson id and maximum purchase amount.
Next: From the following table, write a SQL query to count number of salespeople who belongs to a city. Return number of salespeople.

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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