Explain SQL describing COUNT aggregate and CURRENT DATE function

Problem: Write a SQL query to count the number of orders which were placed today from the ORDERS DB2 table. (The date should not be hardcoded)

Solution

We can find the count of orders which are placed today using the below DB2 query:

Example

SELECT COUNT(ORDER_ID) AS ORDER_COUNT FROM ORDERS
WHERE ORDER_DATE = CURRENT DATE

In this query, we have used the COUNT COLUMN function which will count the total number of ORDER_ID (primary key). In the WHERE clause, we will use the predicate for the ORDER_DATE column. The CURRENT DATE is a DB2 inbuilt function which will return the current system date.

For example, if we have below ORDERS DB2 table:

If the current date is 30-07-2020, then the query with CURRENT DATE predicate will return the below result:

Mandalika

Published on 01-Dec-2020 04:37:45

• Related Questions & Answers
• Example of SQL query describing COUNT function and GROUP BY
• SQL query describing usage of SUM aggregate function and GROUP-BY with HAVING
• What is the SQL query describing usage of MAX aggregate function and GROUP-BY with HAVING?
• Explain aggregate functions with the help of SQL queries
• Example of SQL query describing the conditional processing
• MySQL DATE function to return the difference between current date and joining date
• Explain Get-Date function in PowerShell.
• Current Date and Time in Perl
• How to update column values with date records and set 1 for corresponding records before the current date in SQL
• MySQL query to get current datetime and only current date
• Select dates between current date and 3 months from the current date in MySQL?
• Get current time and date on Android
• Explain the module function to split ABAP date?
• Select aggregate function and all other columns in MySQL
• Get the number of days between current date and date field?