Stairway to Advanced T-SQL Level 10: Using Scalar Functions
Learn about scalar user defined functions in this next level in the Stairway.
2020-10-21 (first published: 2020-10-08)
3,487 reads
Learn about scalar user defined functions in this next level in the Stairway.
2020-10-21 (first published: 2020-10-08)
3,487 reads
2020-06-23
837 reads
2020-06-22
475 reads
2020-06-01
687 reads
2020-05-28
648 reads
Joining tables is a crucial concept to understanding data relationships in a relational database. When you are working with your SQL Server data, you will often need to join tables to produce the results your application requires. Having a good understanding of set theory, and the mathematical operators available and how they are used to join tables will make it easier for you to retrieve the data you need from SQL Server.
2019-05-29 (first published: 2011-11-30)
18,040 reads
A relational database contains tables that relate to each other by key values. When querying data from these related tables you may choose to select data from a single table or many tables. If you select data from many tables, you normally join those tables together using specified join criteria. The concepts of selecting data from tables and joining tables together is all about managing and manipulating sets of data. In Level 4 of this Stairway we will explore the concepts of set theory and mathematical operators to join, merge, and return data from multiple SQL Server tables.
2019-05-22 (first published: 2011-11-16)
24,319 reads
This stairway level will expand on the subquery topic by discussing a type of subquery known as a correlated subquery, and explores what a correlated subquery is and how it is different from a normal subquery.
2019-05-08 (first published: 2014-03-05)
20,409 reads
The final level of this stairway looks at the MERGE statement in detail, focusing on how to perform insert, update and delete logic using the MERGE statement.
2019-03-26 (first published: 2013-01-16)
21,587 reads
This level of the stairway details the creation of a relational database, as well as filling in some of the history of the relational database model.
2019-03-26 (first published: 2011-11-09)
17,935 reads
By Steve Jones
This is my last week of the year working (I guess I come back...
By Steve Jones
suente– n. the state of being so familiar with someone that you can be...
Anyone (everyone?) who has ever tried to learn a programming language knows that to...
I wrote a PowerQuery that parses a table from a PDF, and I want...
Comments posted to this topic are about the item Attaching an SQL Server database...
Comments posted to this topic are about the item Superseded Indexes
Which of these indexes is superseded by another?
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