The INNER JOIN between two tables returns all the rows which are present in both the tables. The concept of JOIN in SQL can be visualized using Venn diagrams. In the below Venn diagram, the circles represent the tables, and the intersection between those circles represents the INNER JOIN’s...
so in you example it will return a single row (containing a field with value 1) so will exec...
I am very new to SQL. I want to know what happens when i use "IF EXISTS" or "IF NOT EX...
Assuming you're joining on columns with no duplicates, which is by far the most common case: An inner join of A and B gives the result of A intersect B, i.e. the inner part of a venn diagram intersection. An outer join of A and B gives the results of A union B, i.e. the o...
In this article, I am going to explain the difference between Inner join and full join with examples. This is one of the very common SQL server interview questions. Here we will be using SQL Server 2017 or you can use SQL Server 2008 or above. Read my previous Joins in SQL Server 2017...
Learn about the differences between the AND operator in MySQL, its usage, and examples to understand how it affects SQL queries.
In SQL Server, both the SEQUENCE object and IDENTITY property are used to generate a sequence of numeric values in an ascending order. However, there are several differences between the IDENTITY property and SEQUENCE object. In this article, we will look at these differences. Difference 1: The...
DIFFERENCE BETWEEN "INSERT INTO" AND UNION IN SQL difference between (WITH [tablename] AS) and (DECLARE @[tablename] TABLE) Difference between APP_NAME() and PROGRAM_NAME() difference between char(13) and char(10) Difference Between DB Log File and Transaction log file Difference between J...
In this article, I am going to explain what is the difference between Inner join and Left join with examples. This is one of the very common SQL server interview questions. Here we will be using SQL Server 2017 or you can use SQL Server 2008 or above. Read my previous Joins in SQL...
In this article, we’ve explored the differences between the GROUP BY and DISTINCT clauses in SQL. GROUP BY is ideal for aggregating data with summary functions, whereas DISTINCT is useful for filtering out duplicate rows. Understanding when and how to use each clause can greatly enhance the ...