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The Basics of Inserting Data into a SQL Server Table

Before data can be read from of a SQL Server database table, the table needs to contain rows of data. One of the most typical ways to get data into a table is to use the INSERT statement. One row or multiple rows can be inserted with a single execution of an INSERT statement. You can even use the output of a stored procedure to insert rows. In this article, I will explore the basics of inserting data into a SQL Server table using the INSERT statement.

2022-10-19

SQLServerCentral Article

Manage Your Business Rules in T-SQL Query

Motivation At some point in the carrer, we have come across the problem of hard-coded values in SELECT or WHERE clauses.  And we all agree that these hardcoded values must be parametrised. This bad habit usually backfires when we need to troubleshoot a query. These hardcoded values are usually a business role baked in the […]

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2022-10-18 (first published: )

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Technical Article

SQL Server Internals: Reading Pages

The I/O from an instance of the SQL Server Database Engine includes logical and physical reads. A logical read occurs every time the Database Engine requests a page from the buffer cache. If the page is not currently in the buffer cache, a physical read first copies the page from disk into the cache.

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2022-10-17

External Article

Finding the Version of a Flyway-managed Database Using SQL

Maintaining a version of a database opens a lot of possibilities, especially if an automated process can easily grab the current version, at runtime, using just SQL. You might, for example, have a routine that is only appropriate after a particular version. It is also very handy to be able to associate entries in an event log or bug report with the database version. No more desultory quests, when dealing with support issues, or when bug fixing, to find which database version was running when the bug happened.

2022-10-14

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The Empty Aggregate

By Steve Jones - SSC Editor

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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]
GO
What 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