Database Development
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21 Oct 2014
Updated: 3 Nov 2014
Rating: 5.00/5
Votes: 5
Popularity: 3.49
Licence: MIT
Views: 14,890
Bookmarked: 12
Downloaded: 0
Database Third Normal Form explained in simple English
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21 Oct 2014
Updated: 21 Oct 2014
Rating: 4.88/5
Votes: 6
Popularity: 3.79
Licence: MIT
Views: 12,181
Bookmarked: 9
Downloaded: 0
Database First Normal Form explained in simple English
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21 Oct 2014
Updated: 21 Oct 2014
Rating: 5.00/5
Votes: 4
Popularity: 3.01
Licence: MIT
Views: 11,641
Bookmarked: 7
Downloaded: 0
Database Second Normal Form explained in simple English
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22 Oct 2014
Updated: 22 Oct 2014
Rating: 5.00/5
Votes: 3
Popularity: 2.39
Licence: MIT
Views: 7,833
Bookmarked: 9
Downloaded: 0
How to combine table rows using UNION in SQL Server
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22 Oct 2014
Updated: 22 Oct 2014
Rating: 5.00/5
Votes: 9
Popularity: 4.77
Licence: MIT
Views: 19,462
Bookmarked: 12
Downloaded: 0
Database normalization in SQL explained in simple English
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19 Jan 2016
Updated: 19 Jan 2016
Rating: 5.00/5
Votes: 5
Popularity: 3.49
Licence: MIT
Views: 10,202
Bookmarked: 10
Downloaded: 0
How to Write SQL – Understand Database Table Meanings and Relationships – Step 1
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29 Dec 2016
Updated: 29 Dec 2016
Rating: 5.00/5
Votes: 7
Popularity: 4.23
Licence: MIT
Views: 10,781
Bookmarked: 8
Downloaded: 0
Introduction to cross join - create row combinations
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6 Mar 2022
Updated: 6 Mar 2022
Rating: 3.00/5
Votes: 1
Popularity: 0.00
Licence: CPOL
Views: 3,970
Bookmarked: 2
Downloaded: 0
Sooner or later, you want to know when a column contains in SQL another value. In this article we’ll go over several ways you can test to see whether one value is contained within an another.
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6 Mar 2022
Updated: 6 Mar 2022
Rating: 0.00/5
Votes: 0
Popularity: 0.00
Licence: CPOL
Views: 3,240
Bookmarked: 3
Downloaded: 0
In this article we look at SQL FULL JOIN examples and make a few notes of things to look for.
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7 Mar 2022
Updated: 7 Mar 2022
Rating: 5.00/5
Votes: 1
Popularity: 0.00
Licence: CPOL
Views: 12,646
Bookmarked: 3
Downloaded: 0
Top five performance tips for Stored Procedures
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7 Mar 2022
Updated: 7 Mar 2022
Rating: 5.00/5
Votes: 2
Popularity: 1.51
Licence: CPOL
Views: 4,460
Bookmarked: 3
Downloaded: 0
In this video and the following article, we’ll take you step-by-step through the process of changing a query’s filter criteria into a SQL variable, then ultimately into a stored procedure.
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7 Mar 2022
Updated: 7 Mar 2022
Rating: 5.00/5
Votes: 3
Popularity: 2.39
Licence: CPOL
Views: 4,661
Bookmarked: 7
Downloaded: 0
In this blog entry we do an overview of the order if execution in SQL.
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7 Mar 2022
Updated: 7 Mar 2022
Rating: 0.00/5
Votes: 0
Popularity: 0.00
Licence: CPOL
Views: 3,841
Bookmarked: 1
Downloaded: 0
In this blog entry we discuss the difference between left join versus right join operators.
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7 Mar 2022
Updated: 7 Mar 2022
Rating: 0.00/5
Votes: 0
Popularity: 0.00
Licence: CPOL
Views: 8,613
Bookmarked: 3
Downloaded: 0
Puzzle to explore a SQL BOM example
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7 Mar 2022
Updated: 7 Mar 2022
Rating: 5.00/5
Votes: 2
Popularity: 1.51
Licence: CPOL
Views: 5,690
Bookmarked: 2
Downloaded: 0
Learn about a database cursor with an example and when to use it in a SP
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7 Mar 2022
Updated: 7 Mar 2022
Rating: 0.00/5
Votes: 0
Popularity: 0.00
Licence: CPOL
Views: 2,901
Bookmarked: 3
Downloaded: 0
Learn about implicit data conversion and explicit type conversions with CAST AND CONVERT
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7 Mar 2022
Updated: 7 Mar 2022
Rating: 1.00/5
Votes: 1
Popularity: 0.00
Licence: CPOL
Views: 4,140
Bookmarked: 3
Downloaded: 0
Comparison of a correlated sub query to a join
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7 Mar 2022
Updated: 7 Mar 2022
Rating: 4.00/5
Votes: 1
Popularity: 0.00
Licence: CPOL
Views: 2,981
Bookmarked: 3
Downloaded: 0
How to rewrite a subquery as a join
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7 Mar 2022
Updated: 7 Mar 2022
Rating: 4.00/5
Votes: 1
Popularity: 0.00
Licence: CPOL
Views: 3,840
Bookmarked: 6
Downloaded: 0
Puzzle to teach joins vs subqueries in SQL
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| MySQL |
14 Aug 2019
Updated: 14 Aug 2019
Rating: 4.17/5
Votes: 3
Popularity: 1.99
Licence: MIT
Views: 5,083
Bookmarked: 0
Downloaded: 0
This post discusses the major parts of a SQL database
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14 Aug 2019
Updated: 14 Aug 2019
Rating: 4.47/5
Votes: 5
Popularity: 3.12
Licence: MIT
Views: 13,116
Bookmarked: 4
Downloaded: 0
What is a Database Trigger?
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| SQL Server |
11 Jan 2016
Updated: 11 Jan 2016
Rating: 4.89/5
Votes: 6
Popularity: 3.80
Licence: MIT
Views: 11,432
Bookmarked: 3
Downloaded: 0
Basic concepts of built-In functions in SQL Server
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13 Mar 2019
Updated: 13 Mar 2019
Rating: 5.00/5
Votes: 1
Popularity: 0.00
Licence: MIT
Views: 4,302
Bookmarked: 1
Downloaded: 0
In this video we’ll walk you though the common data types used in SQL Server; you’ll see examples of each type’s values, and how to define them.
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25 Apr 2019
Updated: 25 Apr 2019
Rating: 4.22/5
Votes: 6
Popularity: 3.28
Licence: MIT
Views: 4,430
Bookmarked: 2
Downloaded: 0
SQL DISTINCT Clause For SQL Server
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26 Apr 2019
Updated: 26 Apr 2019
Rating: 5.00/5
Votes: 2
Popularity: 1.51
Licence: MIT
Views: 4,022
Bookmarked: 1
Downloaded: 0
SQL Server Hierarchical Query using the hierarchyid type
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23 Oct 2014
Updated: 23 Oct 2014
Rating: 5.00/5
Votes: 2
Popularity: 1.51
Licence: MIT
Views: 8,250
Bookmarked: 9
Downloaded: 0
Simplified Data Modeling in SQL
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5 Jan 2016
Updated: 5 Jan 2016
Rating: 4.00/5
Votes: 1
Popularity: 0.00
Licence: MIT
Views: 12,900
Bookmarked: 0
Downloaded: 0
Commonly used SQL Server data types
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14 Jul 2016
Updated: 14 Jul 2016
Rating: 5.00/5
Votes: 5
Popularity: 3.49
Licence: MIT
Views: 8,811
Bookmarked: 5
Downloaded: 0
In this article, we explore non recursive CTEs (Common Table Expressions). This is a broad class, and basically covers every form of CTEs except those that call themselves. This other class is called the recursive CTEs; they are covered in the next article.
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3 Mar 2019
Updated: 3 Mar 2019
Rating: 2.87/5
Votes: 5
Popularity: 2.00
Licence: MIT
Views: 4,450
Bookmarked: 2
Downloaded: 0
In this puzzle, we’re going to learn how to work with the AdventureWorks Bill of Materials table. Companies use a BOM (Bill of Materials) to itemize the products that are used or contained in another product. Solving puzzles is a great way to learn SQL.
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14 Aug 2019
Updated: 14 Aug 2019
Rating: 4.50/5
Votes: 4
Popularity: 2.71
Licence: MIT
Views: 4,660
Bookmarked: 1
Downloaded: 0
Difference between WHERE and HAVING clauses
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24 Oct 2014
Updated: 24 Oct 2014
Rating: 4.75/5
Votes: 3
Popularity: 2.27
Licence: MIT
Views: 6,140
Bookmarked: 8
Downloaded: 0
In today’s lesson, you’re going to learn how to filter the results returned from your queries using the WHERE clause.
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24 Oct 2014
Updated: 24 Oct 2014
Rating: 5.00/5
Votes: 2
Popularity: 1.51
Licence: MIT
Views: 6,740
Bookmarked: 8
Downloaded: 0
How to sort your query results in SQL Server
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24 Oct 2014
Updated: 24 Oct 2014
Rating: 4.75/5
Votes: 3
Popularity: 2.27
Licence: MIT
Views: 6,582
Bookmarked: 7
Downloaded: 0
Learn more about filtering results returned from your queries using the WHERE clause
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25 Oct 2014
Updated: 25 Oct 2014
Rating: 4.71/5
Votes: 4
Popularity: 2.84
Licence: MIT
Views: 10,751
Bookmarked: 12
Downloaded: 0
Simple SELECT queries in SQL Server
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29 Oct 2014
Updated: 29 Oct 2014
Rating: 4.50/5
Votes: 2
Popularity: 1.35
Licence: MIT
Views: 5,860
Bookmarked: 7
Downloaded: 0
In this lesson, you are going to explore how to do pattern matching with the SQL Where clause LIKE operator.
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31 Oct 2014
Updated: 31 Oct 2014
Rating: 5.00/5
Votes: 1
Popularity: 0.00
Licence: MIT
Views: 10,050
Bookmarked: 8
Downloaded: 0
How to use the Intersect Operator in SQL Server
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14 Aug 2019
Updated: 14 Aug 2019
Rating: 3.00/5
Votes: 4
Popularity: 1.81
Licence: CPOL
Views: 4,040
Bookmarked: 0
Downloaded: 0
Truncate and Delete in SQL
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14 Aug 2019
Updated: 14 Aug 2019
Rating: 4.33/5
Votes: 3
Popularity: 2.07
Licence: MIT
Views: 4,180
Bookmarked: 0
Downloaded: 0
Query plans in SQL
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22 Oct 2014
Updated: 22 Oct 2014
Rating: 5.00/5
Votes: 4
Popularity: 3.01
Licence: MIT
Views: 9,290
Bookmarked: 9
Downloaded: 0
Introduction to Outer Joins in SQL Server
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22 Oct 2014
Updated: 22 Oct 2014
Rating: 5.00/5
Votes: 4
Popularity: 3.01
Licence: MIT
Views: 7,490
Bookmarked: 8
Downloaded: 0
Introduction to Inner Joins in SQL Server
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23 Oct 2014
Updated: 23 Oct 2014
Rating: 5.00/5
Votes: 2
Popularity: 1.51
Licence: MIT
Views: 8,100
Bookmarked: 5
Downloaded: 0
Query Results Using Pattern Matching in SQL
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23 Oct 2014
Updated: 23 Oct 2014
Rating: 4.60/5
Votes: 3
Popularity: 2.19
Licence: MIT
Views: 10,080
Bookmarked: 5
Downloaded: 0
What is a Null Value? In databases a common issue is what value or placeholder do you use to represent a missing values. In SQL, this is solved with null. It is used to signify missing or unknown values. The keyword NULL is used to indicate these values.
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23 Oct 2014
Updated: 23 Oct 2014
Rating: 5.00/5
Votes: 2
Popularity: 1.51
Licence: MIT
Views: 8,972
Bookmarked: 7
Downloaded: 0
How to Group and Summarize your Results in SQL
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29 Oct 2014
Updated: 29 Oct 2014
Rating: 5.00/5
Votes: 2
Popularity: 1.51
Licence: MIT
Views: 8,760
Bookmarked: 11
Downloaded: 0
Grouping results returned from your queries using the GROUP BY clause
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14 Nov 2014
Updated: 14 Nov 2014
Rating: 4.82/5
Votes: 5
Popularity: 3.37
Licence: MIT
Views: 45,259
Bookmarked: 6
Downloaded: 0
Sort Alphanumeric Values with SQL Server
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21 Dec 2014
Updated: 21 Dec 2014
Rating: 4.57/5
Votes: 5
Popularity: 3.20
Licence: MIT
Views: 10,541
Bookmarked: 5
Downloaded: 0
How to use the Except Operator in SQLServer
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4 Feb 2015
Updated: 4 Feb 2015
Rating: 5.00/5
Votes: 1
Popularity: 0.00
Licence: MIT
Views: 7,851
Bookmarked: 5
Downloaded: 0
The purpose of this article is to introduce you to subqueries and some of their high-level concepts. There are a lot of details to cover in order to learn sub queries, but you’ll see we cover those in depth in later articles.
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6 Feb 2015
Updated: 6 Feb 2015
Rating: 4.33/5
Votes: 2
Popularity: 1.30
Licence: MIT
Views: 12,410
Bookmarked: 1
Downloaded: 0
This is the second in a series of articles about subqueries. In this article, we discuss subqueries in the SELECT statement’s column list. Other articles discuss their uses in other clauses.
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23 Feb 2015
Updated: 23 Feb 2015
Rating: 3.91/5
Votes: 4
Popularity: 2.35
Licence: MIT
Views: 28,381
Bookmarked: 2
Downloaded: 0
What is the difference between GROUP BY and ORDER BY
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2 Jan 2016
Updated: 2 Jan 2016
Rating: 4.20/5
Votes: 2
Popularity: 1.26
Licence: MIT
Views: 10,460
Bookmarked: 2
Downloaded: 0
Introduction to SQL Server’s Common String Functions
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2 Jan 2016
Updated: 2 Jan 2016
Rating: 5.00/5
Votes: 1
Popularity: 0.00
Licence: MIT
Views: 8,742
Bookmarked: 1
Downloaded: 0
Introduction to SQL Server's built-in conversion functions
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4 Jan 2016
Updated: 4 Jan 2016
Rating: 5.00/5
Votes: 3
Popularity: 2.39
Licence: MIT
Views: 6,151
Bookmarked: 5
Downloaded: 0
Introduction to SQL Server's built-in logical functions
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4 Nov 2016
Updated: 4 Nov 2016
Rating: 5.00/5
Votes: 1
Popularity: 0.00
Licence: MIT
Views: 6,722
Bookmarked: 0
Downloaded: 0
Introduction to SQL Server Data Modification statements
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29 Dec 2016
Updated: 29 Dec 2016
Rating: 5.00/5
Votes: 3
Popularity: 2.39
Licence: MIT
Views: 5,470
Bookmarked: 1
Downloaded: 0
Uncommon SQL server data types
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30 Dec 2017
Updated: 30 Dec 2017
Rating: 5.00/5
Votes: 2
Popularity: 1.51
Licence: MIT
Views: 6,952
Bookmarked: 2
Downloaded: 0
SQL set operations
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30 Dec 2017
Updated: 30 Dec 2017
Rating: 3.89/5
Votes: 5
Popularity: 2.72
Licence: MIT
Views: 8,140
Bookmarked: 2
Downloaded: 0
Benefits of stored procedures and how to create and execute them
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30 Dec 2017
Updated: 30 Dec 2017
Rating: 5.00/5
Votes: 1
Popularity: 0.00
Licence: MIT
Views: 4,780
Bookmarked: 0
Downloaded: 0
In this video, we'll walk you through how to use the LIKE clause.
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30 Dec 2017
Updated: 30 Dec 2017
Rating: 5.00/5
Votes: 6
Popularity: 3.89
Licence: MIT
Views: 5,740
Bookmarked: 3
Downloaded: 0
How to join dirty data using SQL Server
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30 Dec 2017
Updated: 30 Dec 2017
Rating: 3.86/5
Votes: 3
Popularity: 1.84
Licence: MIT
Views: 11,811
Bookmarked: 6
Downloaded: 0
In this puzzle, we’re going to learn how to create a cross tab query using SQL Server.
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30 Dec 2017
Updated: 30 Dec 2017
Rating: 4.18/5
Votes: 7
Popularity: 3.53
Licence: MIT
Views: 8,283
Bookmarked: 4
Downloaded: 0
In this puzzle, we’re going to learn how to create a dynamic pivot table using SQL Server.
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30 Dec 2017
Updated: 30 Dec 2017
Rating: 5.00/5
Votes: 2
Popularity: 1.51
Licence: MIT
Views: 5,311
Bookmarked: 1
Downloaded: 0
In this puzzle, we’re going to learn how to find the person whose birthday, among others, is in the middle.
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30 Dec 2017
Updated: 30 Dec 2017
Rating: 3.43/5
Votes: 6
Popularity: 2.67
Licence: MIT
Views: 9,200
Bookmarked: 5
Downloaded: 0
In this puzzle, we’re going to learn how to query the data dictionary using SQL Server.
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14 Aug 2019
Updated: 14 Aug 2019
Rating: 3.12/5
Votes: 6
Popularity: 2.43
Licence: MIT
Views: 4,365
Bookmarked: 2
Downloaded: 0
How to use SQL Server Date functions
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14 Aug 2019
Updated: 14 Aug 2019
Rating: 3.00/5
Votes: 2
Popularity: 0.90
Licence: CPOL
Views: 38,930
Bookmarked: 0
Downloaded: 0
What is a Data Dictionary in SQL Server?
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26 Apr 2019
Updated: 26 Apr 2019
Rating: 3.78/5
Votes: 6
Popularity: 2.94
Licence: MIT
Views: 4,250
Bookmarked: 0
Downloaded: 0
SQL COALESCE Function and NULL
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14 Aug 2019
Updated: 14 Aug 2019
Rating: 4.20/5
Votes: 2
Popularity: 1.26
Licence: MIT
Views: 7,842
Bookmarked: 2
Downloaded: 0
How to combine results from more than one table
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29 Dec 2019
Updated: 29 Dec 2019
Rating: 0.00/5
Votes: 0
Popularity: 0.00
Licence: MIT
Views: 2,751
Bookmarked: 3
Downloaded: 0
In this puzzle we’re going to learn how to find the person whose birthday, among others, is in the middle. Knowing how to calculate the median value is a good skill to have. As you start to explore business intelligence you’ll come across similar problems to solve.
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23 Feb 2020
Updated: 23 Feb 2020
Rating: 4.50/5
Votes: 4
Popularity: 2.71
Licence: MIT
Views: 10,521
Bookmarked: 3
Downloaded: 0
SQL COALESCE function and how you can test for null, and when present, substitute it for another value
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Mobile Apps
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| Smartphone |
14 Aug 2019
Updated: 14 Aug 2019
Rating: 3.10/5
Votes: 10
Popularity: 3.10
Licence: CPOL
Views: 6,531
Bookmarked: 1
Downloaded: 0
SQLite3 is a compact free database you can use easily to create and use a database. Learn more about it in this blog post.
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Productivity Apps and Services
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| Microsoft Office |
14 Aug 2019
Updated: 14 Aug 2019
Rating: 5.00/5
Votes: 5
Popularity: 3.49
Licence: MIT
Views: 5,460
Bookmarked: 3
Downloaded: 0
In this blog post, you will learn about stored procedures
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29 Dec 2020
Updated: 29 Dec 2020
Rating: 5.00/5
Votes: 1
Popularity: 0.00
Licence: MIT
Views: 6,712
Bookmarked: 2
Downloaded: 0
How to reconstruct full outer join in SQL using other join clauses
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| Sharepoint |
10 Mar 2015
Updated: 10 Mar 2015
Rating: 4.67/5
Votes: 2
Popularity: 1.40
Licence: MIT
Views: 6,540
Bookmarked: 5
Downloaded: 0
Subqueries in the FROM clause
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21 Mar 2015
Updated: 21 Mar 2015
Rating: 0.00/5
Votes: 0
Popularity: 0.00
Licence: MIT
Views: 6,281
Bookmarked: 2
Downloaded: 0
Get ready to learn SQL Server 23: Using Subqueries in the HAVING clause
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16 Jun 2015
Updated: 16 Jun 2015
Rating: 4.31/5
Votes: 5
Popularity: 3.01
Licence: MIT
Views: 38,245
Bookmarked: 2
Downloaded: 0
Difference between primary and foreign keys, and why both are important to maintaining a relational database structure
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16 Jun 2015
Updated: 16 Jun 2015
Rating: 5.00/5
Votes: 2
Popularity: 1.51
Licence: MIT
Views: 8,272
Bookmarked: 3
Downloaded: 0
Difference between Top and Offset & Fetch
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16 Jun 2015
Updated: 16 Jun 2015
Rating: 4.45/5
Votes: 6
Popularity: 3.47
Licence: MIT
Views: 21,785
Bookmarked: 3
Downloaded: 0
Using OFFSET and FETCH with the ORDER BY clause
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1 Jan 2016
Updated: 1 Jan 2016
Rating: 4.56/5
Votes: 5
Popularity: 3.18
Licence: MIT
Views: 54,342
Bookmarked: 3
Downloaded: 0
Difference between a join and a union
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3 Jan 2016
Updated: 3 Jan 2016
Rating: 4.67/5
Votes: 5
Popularity: 3.26
Licence: MIT
Views: 48,185
Bookmarked: 4
Downloaded: 0
What is the Difference between a Join and Subquery?
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20 Jul 2016
Updated: 20 Jul 2016
Rating: 5.00/5
Votes: 6
Popularity: 3.89
Licence: MIT
Views: 12,601
Bookmarked: 2
Downloaded: 0
Recursive CTE’s In this article we explore recursive CTE’s (Common Table Expressions). Recursive CTEs are special in the sense they are allowed to reference themselves! Because of this special ability, you can use recursive CTEs to solve problems other queries cannot. Recursive CTEs are really go
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19 Mar 2017
Updated: 19 Mar 2017
Rating: 3.76/5
Votes: 5
Popularity: 2.63
Licence: MIT
Views: 9,130
Bookmarked: 2
Downloaded: 0
In this puzzle, we're going to learn how to create a bar chart using SQL Server.
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19 Mar 2017
Updated: 19 Mar 2017
Rating: 3.91/5
Votes: 6
Popularity: 3.04
Licence: MIT
Views: 13,292
Bookmarked: 4
Downloaded: 0
How to find a gap in a sequence using SQL Server
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30 Dec 2017
Updated: 30 Dec 2017
Rating: 5.00/5
Votes: 8
Popularity: 4.52
Licence: MIT
Views: 10,711
Bookmarked: 2
Downloaded: 0
Difference between a primary and unique key and why both are important to maintaining a relational database structure
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1 Mar 2018
Updated: 1 Mar 2018
Rating: 4.00/5
Votes: 2
Popularity: 1.20
Licence: MIT
Views: 22,204
Bookmarked: 3
Downloaded: 0
Use IF…ELSE statements to program a Stored Procedure
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1 Mar 2018
Updated: 1 Mar 2018
Rating: 2.45/5
Votes: 3
Popularity: 1.17
Licence: MIT
Views: 12,911
Bookmarked: 1
Downloaded: 0
After reading this article you will understand the basics of using the WHILE statement to write a loop within a stored procedure. All the examples for this lesson are based on Microsoft SQL Server Management Studio and the sample databases AdventureWorks and WideWorldImporters.
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20 Feb 2015
Updated: 20 Feb 2015
Rating: 4.60/5
Votes: 4
Popularity: 2.77
Licence: MIT
Views: 11,261
Bookmarked: 2
Downloaded: 0
In this post, we discuss subqueries in the WHERE clause.
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4 Nov 2016
Updated: 4 Nov 2016
Rating: 5.00/5
Votes: 2
Popularity: 1.51
Licence: MIT
Views: 5,411
Bookmarked: 0
Downloaded: 0
Here is an introduction to the INSERT statement
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Programming Languages
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| SQL |
13 Mar 2019
Updated: 13 Mar 2019
Rating: 5.00/5
Votes: 4
Popularity: 3.01
Licence: MIT
Views: 5,612
Bookmarked: 5
Downloaded: 0
In this guide, I’ll show you how to get started using Power BI. We’ll then get some sample data and use it to build a simple project.
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13 Mar 2019
Updated: 13 Mar 2019
Rating: 5.00/5
Votes: 1
Popularity: 0.00
Licence: MIT
Views: 3,090
Bookmarked: 3
Downloaded: 0
An answer to fix an error converting data type from varchar to float
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29 Dec 2019
Updated: 29 Dec 2019
Rating: 4.64/5
Votes: 4
Popularity: 2.79
Licence: MIT
Views: 2,872
Bookmarked: 4
Downloaded: 0
How to identify the top and bottom 25 percent to rank student scores
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14 Aug 2019
Updated: 14 Aug 2019
Rating: 4.33/5
Votes: 3
Popularity: 2.07
Licence: MIT
Views: 3,021
Bookmarked: 1
Downloaded: 0
What is a database table?
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14 Aug 2019
Updated: 14 Aug 2019
Rating: 3.67/5
Votes: 3
Popularity: 1.75
Licence: MIT
Views: 4,660
Bookmarked: 2
Downloaded: 0
Database indexes explained
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31 Dec 2015
Updated: 31 Dec 2015
Rating: 4.57/5
Votes: 9
Popularity: 4.36
Licence: MIT
Views: 9,620
Bookmarked: 4
Downloaded: 0
Difference between inner and outer joins
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9 Jul 2016
Updated: 9 Jul 2016
Rating: 4.80/5
Votes: 6
Popularity: 3.74
Licence: MIT
Views: 8,160
Bookmarked: 6
Downloaded: 0
Introduction to Common Table Expressions
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23 Nov 2016
Updated: 23 Nov 2016
Rating: 4.00/5
Votes: 7
Popularity: 3.38
Licence: MIT
Views: 4,990
Bookmarked: 3
Downloaded: 0
Here is an introduction to the Delete statement
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23 Nov 2016
Updated: 23 Nov 2016
Rating: 4.17/5
Votes: 4
Popularity: 2.51
Licence: MIT
Views: 7,752
Bookmarked: 2
Downloaded: 0
An introduction to the UPDATE statement
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1 Mar 2018
Updated: 1 Mar 2018
Rating: 4.47/5
Votes: 5
Popularity: 3.12
Licence: MIT
Views: 11,322
Bookmarked: 11
Downloaded: 0
How to build dynamic SQL in a stored procedure
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17 Jul 2015
Updated: 17 Jul 2015
Rating: 4.75/5
Votes: 11
Popularity: 4.75
Licence: MIT
Views: 41,364
Bookmarked: 9
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How to use conditional logic in SQL with CASE expression
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19 Jan 2016
Updated: 19 Jan 2016
Rating: 4.45/5
Votes: 5
Popularity: 3.11
Licence: MIT
Views: 9,302
Bookmarked: 6
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Three simple steps to writing SQL queries
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19 Jan 2016
Updated: 19 Jan 2016
Rating: 5.00/5
Votes: 1
Popularity: 0.00
Licence: MIT
Views: 5,300
Bookmarked: 4
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Write SQL – Formulate your Question – Step 2
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26 Jan 2016
Updated: 26 Jan 2016
Rating: 4.33/5
Votes: 3
Popularity: 2.07
Licence: MIT
Views: 6,100
Bookmarked: 5
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Write SQL - write the query
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23 Feb 2017
Updated: 23 Feb 2017
Rating: 4.76/5
Votes: 12
Popularity: 5.13
Licence: MIT
Views: 21,636
Bookmarked: 13
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How to calculate moving averages by working through a hypothetical stock market example
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23 Feb 2017
Updated: 23 Feb 2017
Rating: 4.79/5
Votes: 8
Popularity: 4.33
Licence: MIT
Views: 10,556
Bookmarked: 2
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How to identify the top and bottom 25 percent to rank student scores
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25 Mar 2017
Updated: 25 Mar 2017
Rating: 5.00/5
Votes: 1
Popularity: 0.00
Licence: MIT
Views: 6,310
Bookmarked: 3
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How to calculate moving averages
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30 Dec 2017
Updated: 30 Dec 2017
Rating: 5.00/5
Votes: 4
Popularity: 3.01
Licence: MIT
Views: 6,601
Bookmarked: 2
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In this puzzle, we’re going to learn how to rewrite a subquery using inner joins.
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30 Dec 2017
Updated: 30 Dec 2017
Rating: 5.00/5
Votes: 2
Popularity: 1.51
Licence: MIT
Views: 5,381
Bookmarked: 0
Downloaded: 0
Joins versus subqueries in SQL
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30 Dec 2017
Updated: 30 Dec 2017
Rating: 5.00/5
Votes: 2
Popularity: 1.51
Licence: MIT
Views: 4,731
Bookmarked: 3
Downloaded: 0
How to write a SQL UNION without using Set operations
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30 Dec 2017
Updated: 30 Dec 2017
Rating: 4.50/5
Votes: 5
Popularity: 3.15
Licence: MIT
Views: 11,071
Bookmarked: 6
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There are several ways to calculate a running total in SQL. In this article, we will cover two methods: Joins, and Window Functions.
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30 Dec 2017
Updated: 30 Dec 2017
Rating: 5.00/5
Votes: 1
Popularity: 0.00
Licence: MIT
Views: 4,861
Bookmarked: 0
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How to use the TOP clause in SQL
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30 Dec 2017
Updated: 30 Dec 2017
Rating: 4.09/5
Votes: 6
Popularity: 3.18
Licence: MIT
Views: 5,570
Bookmarked: 0
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How to select top rows within a query
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13 Mar 2019
Updated: 13 Mar 2019
Rating: 3.67/5
Votes: 2
Popularity: 1.10
Licence: MIT
Views: 4,082
Bookmarked: 5
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In this episode of SQL Minute I want to share with you how to create a pivot or cross tab chart.
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13 Mar 2019
Updated: 13 Mar 2019
Rating: 5.00/5
Votes: 3
Popularity: 2.39
Licence: MIT
Views: 11,373
Bookmarked: 2
Downloaded: 0
A common question I get ask is whether I can have a CASE Statement in the WHERE Clause.
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14 Aug 2019
Updated: 14 Aug 2019
Rating: 2.33/5
Votes: 2
Popularity: 0.70
Licence: MIT
Views: 4,980
Bookmarked: 1
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SQL ACID explained
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29 Dec 2019
Updated: 29 Dec 2019
Rating: 0.00/5
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Licence: MIT
Views: 1,951
Bookmarked: 2
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How to select top rows within a query
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22 Oct 2014
Updated: 22 Oct 2014
Rating: 5.00/5
Votes: 5
Popularity: 3.49
Licence: MIT
Views: 8,870
Bookmarked: 11
Downloaded: 0
Introduction to database joins in SQL
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4 Jan 2016
Updated: 4 Jan 2016
Rating: 5.00/5
Votes: 2
Popularity: 1.51
Licence: MIT
Views: 16,624
Bookmarked: 3
Downloaded: 0
How to find duplicate values in SQL Server
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4 Jan 2016
Updated: 4 Jan 2016
Rating: 5.00/5
Votes: 1
Popularity: 0.00
Licence: MIT
Views: 10,922
Bookmarked: 3
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Introduction to SQL Server’s Mathematical Functions
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12 Feb 2017
Updated: 12 Feb 2017
Rating: 5.00/5
Votes: 2
Popularity: 1.51
Licence: MIT
Views: 6,231
Bookmarked: 2
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In this article, well explore how to use the MERGE statement. We discuss some best practices, limitations, and wrap-up with several examples.
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12 Feb 2017
Updated: 12 Feb 2017
Rating: 5.00/5
Votes: 1
Popularity: 0.00
Licence: MIT
Views: 13,405
Bookmarked: 2
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This post discusses the difference between merge and update
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17 Jun 2015
Updated: 17 Jun 2015
Rating: 5.00/5
Votes: 1
Popularity: 0.00
Licence: MIT
Views: 42,738
Bookmarked: 6
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How do the SQL DISTINCT and TOP SELECT Clauses Work Together to Generate Results?
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30 Aug 2016
Updated: 30 Aug 2016
Rating: 4.43/5
Votes: 8
Popularity: 4.00
Licence: MIT
Views: 13,722
Bookmarked: 5
Downloaded: 0
How to calculate the end of the month in SQL
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25 Mar 2017
Updated: 25 Mar 2017
Rating: 5.00/5
Votes: 2
Popularity: 1.51
Licence: MIT
Views: 8,751
Bookmarked: 2
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How to identify the top and bottom 25 percent to rank student scores
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13 Mar 2019
Updated: 13 Mar 2019
Rating: 0.00/5
Votes: 0
Popularity: 0.00
Licence: MIT
Views: 4,271
Bookmarked: 2
Downloaded: 0
I recently put together a lesson on non-equi joins. It is part of my Join Together Now course. Click here get the course at a discount. A non-equi join can be used to solve some interesting query problems.
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29 Dec 2019
Updated: 29 Dec 2019
Rating: 0.00/5
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Licence: MIT
Views: 2,191
Bookmarked: 5
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In this puzzle, we’re going to learn how to calculate moving averages by working through a hypothetical stock market example. Solving puzzles is a great way to learn SQL. Nothing beats practicing what you’ve learned.
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30 Dec 2017
Updated: 30 Dec 2017
Rating: 5.00/5
Votes: 5
Popularity: 3.49
Licence: MIT
Views: 6,190
Bookmarked: 4
Downloaded: 0
How to do some basic data modeling
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19 Mar 2017
Updated: 19 Mar 2017
Rating: 4.00/5
Votes: 5
Popularity: 2.80
Licence: MIT
Views: 8,220
Bookmarked: 4
Downloaded: 0
Work with the AdventureWorks Bill of Materials using Subqueries
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7 Mar 2022
Updated: 7 Mar 2022
Rating: 0.00/5
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Licence: CPOL
Views: 3,400
Bookmarked: 2
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In this article we’ve collected all the essential information about writing SQL queries into one ultimate guide to help you gain and practice this knowledge more effectively.
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13 Mar 2019
Updated: 13 Mar 2019
Rating: 0.00/5
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Popularity: 0.00
Licence: MIT
Views: 4,800
Bookmarked: 3
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I recently put together a lesson on table aliases and multi-table joins. It is part of my Join Together Now course. Click here get the course at a discount.
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4 Mar 2022
Updated: 4 Mar 2022
Rating: 3.00/5
Votes: 3
Popularity: 1.43
Licence: CPOL
Views: 4,110
Bookmarked: 3
Downloaded: 0
Use STRING_SPLIT() to join two tables
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7 Mar 2022
Updated: 7 Mar 2022
Rating: 0.00/5
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Licence: CPOL
Views: 2,431
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In this blog entry we do an overview of the SQL DATEDIFF function
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7 Mar 2022
Updated: 7 Mar 2022
Rating: 5.00/5
Votes: 1
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Licence: CPOL
Views: 2,560
Bookmarked: 1
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In this article we’re going to cover the seven data types you’ll most frequently encounter in your everyday use of SQL.
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7 Mar 2022
Updated: 7 Mar 2022
Rating: 0.00/5
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Licence: CPOL
Views: 4,020
Bookmarked: 2
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The purpose of this article is to introduce you to SQL window functions and some of the high-level concepts.
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7 Mar 2022
Updated: 7 Mar 2022
Rating: 0.00/5
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Licence: CPOL
Views: 2,730
Bookmarked: 2
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How to use SQL GROUP BY Clause is to consolidate like values into a single row
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13 Mar 2019
Updated: 13 Mar 2019
Rating: 0.00/5
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Licence: MIT
Views: 4,121
Bookmarked: 3
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In this SQL minute we’ll look at how you can use hierarchyid to query hierarchy data. This is a two-part article. In this article we look at how to do one query to get portion of the hierarchy.
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31 Dec 2015
Updated: 6 Jan 2016
Rating: 4.97/5
Votes: 10
Popularity: 4.97
Licence: MIT
Views: 51,968
Bookmarked: 11
Downloaded: 0
Difference between Cast and Convert
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13 Mar 2019
Updated: 13 Mar 2019
Rating: 5.00/5
Votes: 2
Popularity: 1.51
Licence: MIT
Views: 3,793
Bookmarked: 4
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In this lesson, we’re going to learn about the While Loop. So, what is a While Loop? Well, While Loop is set up using a While statement. While statements are used to repeatedly execute a block of SQL statements.
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