Category: Join

In this section, we are going to understand the working of PostgreSQL Natural join, which is used to join two or more than two tables. What is the PostgreSQL Natural Join clause? The natural join is where multiple tables are combined, and as an output, we will get the new rows, which is intended to join the columns…

In this section, we are going to understand the working of PostgreSQL Self joins, which is used to relate rows within the same table. We also learned how to get the hierarchical data from similar table with the help of the PostgreSQL Self join clause. What is PostgreSQL Self Join? In PostgreSQL, we have one particular type of join, which…

In this section, we are going to understand the working of PostgreSQL Cross join, which allows us to create a Cartesian Product of rows in two or more tables. We also learn how to use table-aliasing, WHERE clause, and join multiple tables with the help of the PostgreSQL Cross Join clause. What is PostgreSQL Cross Join? The PostgreSQL Cross Join is…

In this section, we are going to understand the working of PostgreSQL Full join, which is used to return all records when there is a match in the left table or right table records. We also learn how to use table-aliasing, WHERE clause with the help of the PostgreSQL Full Outer join clause. What is the PostgreSQL Full Join or Full Outer Join clause?…

In this section, we are going to understand the working of PostgreSQL Right join, which is used to return data from the Right table. We also learn how to use table-aliasing, WHERE clause, USING clause, and join multiple tables with the help of the PostgreSQL Right join clause. What is the PostgreSQL Right Outer Join or Right Join clause? The PostgreSQL…

In this section, we are going to understand the working of ostgreSQL Left join, which is used to return data from the left table. We also learn how to use table-aliasing, WHERE clause, USING clause, and join multiple tables with the help of the PostgreSQL Left join clause. What is PostgreSQL Left Outer Join or Left Join clause? The PostgreSQL…

In this section, we are going to understand the working of PostgreSQL inner join, which is used to select data from many tables. We also learn how to use WHERE clause, USING clause, operators, and join three tables, table-aliasing in PostgreSQL inner join. What is PostgreSQL INNER JOIN clause? In a relational database, data is naturally spread in…

In this section, we are going to understand the working of several types of PostgreSQL joins, such as Inner join, Left join, Right join, and Full Outer join in brief. PostgreSQL JOINS are used with SELECT command, which helps us to retrieve data from various tables. And we can merge the Select and Joins statements together into a single command. Whenever…