Tally Tables in T-SQL
The Tally (or Numbers) table is one of the most useful constructs in intermediate-level SQL. Have you ever written a...
2014-03-27
55,941 reads
Dwain Camps
Getting an INDEX SEEK to Speed up LIKE “%string%” Searches
In today’s blog I will attempt to challenge the popularly held notion that LIKE “%string%” wildcard searches must be slow...
2014-03-26
20,682 reads
Common Table Expressions in SQL
In SQL Server 2005, Microsoft introduced the Common Table Expression (CTE). CTEs share similarities with VIEWS and derived tables, but...
2014-03-23
1,597 reads
The T-SQL ROW_NUMBER() Function
If you learn one new T-SQL (i.e., Microsoft SQL Server) concept today it should be ROW_NUMBER(). Introduced in SQL 2005,...
2014-03-22
2,959 reads
Creating a Date Range from Multiple Rows Based on a Single Date
When you've got only a single effective date on a record and you need to artificially create the effective end date based on a following row in T-SQL, the techniques discussed in this article will help you decide what is best.
2014-03-18
33,351 reads
The SQL TABLE Type: Beyond Table-Valued Parameters
Follow along as this starter article on the SQL TABLE Type walks you through the various ways it can be used in T-SQL.
2014-03-03
9,499 reads
2014-01-09
2,338 reads
Variable Default Values to a Stored Procedure (SQL Spackle)
A way to assign variable and overrideable defaults to input parameters to an SP or FUNCTION using a configurations table.
2013-09-03
8,316 reads
2013-09-03
2,454 reads
A Hazard of Using the SQL Merge Statement
The SQL MERGE statement can make your DML querying more efficient but you need to take care or you may get burned
2013-04-03
24,414 reads
Blogs
Retro Data 2025 – Slidedeck
You can find the slides of my session on the €100 DWH in Azure...
The Book of Redgate: We Value Teams
By Steve Jones
This value is something that I still hear today: our best work is done...
Troubleshooting TempDB Log Full Errors When SSMS Won’t Connect
By gbargsley
Have you ever received the dreaded error from SQL Server that the TempDB log...
Forums
Is there a way for SP to know who called it?
Hi everyone I am writing an SP where there is logic inside the SP...
Planning for tomorrow, today - database migrations
Comments posted to this topic are about the item Planning for tomorrow, today -...
Bottlenecks on SQL Server performance
We have a BI-application that connects to input tables on a SQL Server 2022...
Question of the Day
The Tightly Linked View
I try to run this code on SQL Server 2022. All the objects exist in the database.
CREATE OR ALTER VIEW OrderShipping
AS
SELECT cl.CityNameID,
cl.CityName,
o.OrderID,
o.Customer,
o.OrderDate,
o.CustomerID,
o.cityId
FROM dbo.CityList AS cl
INNER JOIN dbo.[Order] AS o ON o.cityId = cl.CityNameID
GO
CREATE OR ALTER FUNCTION GetShipCityForOrder
(
@OrderID INT
)
RETURNS VARCHAR(50)
WITH SCHEMABINDING
AS
BEGIN
DECLARE @city VARCHAR(50);
SELECT @city = os.CityName
FROM dbo.OrderShipping AS os
WHERE os.OrderID = @OrderID;
RETURN @city;
END;
go
What is the result? See possible answers