Opening JSON Data with T-SQL
The T-SQL code samples in this tip illustrate ways of displaying JSON formatted data in SQL Server as well as how to transfer JSON formatted data to SQL Server tables.
2021-06-25
java
Managing database changes using Flyway: an Overview
This article describes the principles of using Flyway migrations to build a database from scripts, to a specified version, and to track, manage and apply all database changes.
2021-02-03
Postgresql JDBC Tutorial on Linux
PosgtreSQL is a free and general purpose open source object-relational database system that uses and extends the SQL language. Though originally designed to run on UNIX platforms, Postgres is able to run on various platforms, such as macOS, Solaris, Windows, Unix, and Linux. PostgreSQL databases provide enterprise-class database solutions and are used by a wide […]
2020-05-11
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The Hidden Security Risks of Role Combination in SSAS Tabular
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The Empty Aggregate
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Question of the Day
The Empty Aggregate
I have this table in a SQL Server 2025 database:
CREATE TABLE [dbo].[CustomerOrder] ( [OrderID] [int] NULL, [CustomerID] [int] NULL, [total] [money] NULL ) ON [PRIMARY] GOWhat is returned from this code? (answers are for the sum and then the count)
SELECT SUM(total) AS sum,
COUNT(total) AS count
FROM dbo.CustomerOrder;
See possible answers