Join type output examples

Select a join type option based on your desired output. Use the examples below to guide your selection.

Inner join

Returns only the records that have matching values in the selected columns in both tables.

For example, if you have a table of employees and their departments, and a table of employees and their pay rates, this option will return a table of the employees that exist in both tables, and their departments and pay rates.

Table 1: Employees and Departments


Employee	Отдел
Джон	101
Jill	102
Mike	103
Betty	104
Cindy	105

Table 2: Employees and Pay rates


Employee	Pay rate
Джон	50
Betty	50
Mike	40
Jill	35
Dan	45

Table 3: Employees, Departments, and Pay rates


Employee	Отдел	Pay rate
Джон	101	50
Jill	102	35
Mike	103	40
Betty	104	50

Left outer join

Returns all records from the first table, and the matched records from the second table.

Using the example Tables 1 and 2, this option returns the following table:

Table 3: Employees, Departments, and Pay rates


Employee	Отдел	Pay rate
Джон	101	50
Jill	102	35
Mike	103	40
Betty	104	50
Cindy	105

Right outer join

Returns all records from the second table, and the matched records from the first table.

This option returns the following table:

Table 3: Employees, Departments, and Pay rates


Employee	Отдел	Pay rate
Джон	101	50
Betty	104	50
Mike	103	40
Jill	102	35
Dan		45

Full outer join

Returns all records when there is a match in either left or right table.

This option returns the following table:

Table 3: Employees, Departments, and Pay rates


Employee	Отдел	Pay rate
Джон	101	50
Jill	102	35
Mike	103	40
Betty	104	50
Cindy	105
Dan		45

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