This document discusses different types of SQL joins: inner join, outer join, and cross join. It explains that inner joins return only matching records from both tables, while outer joins return all records from one table and matching records from the other table. The three types of outer joins are left, right, and full outer joins. Cross joins return all possible combinations of records between the two tables. Syntax examples and sample queries are provided to illustrate each type of join.

1. SQL JOINS
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SQL JOINS
Inner Join
Outer Join
Cross Join

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SQL JOINS
I.INNER JOIN
Inner join returns only those records that match in both the tables.
Syntax:
Select * from table 1 INNER JOIN
table 2
ON
Table 1.Column 1=table 2.Column 1

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SQL JOINS
Select * from CountryStatus
Inner Join PRODUCTS
ON
CountryStatus.ProductID=PRODUCTS.ProductID
Result:
QUARY:

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SQL JOINS
II.OUTER JOIN
Outer Joins are three types
a. Right Outer Join
b. Left Outer Join
c. Full Outer join

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SQL JOINS
a. Right Outer Join
Right outer join returns all records/rows from right table and from left table
returns only matched records.
Syntax:
Select * from Table 1
Right Outer Join Table 2
ON
Table 1.Column 1=Table 2.Column 1

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SQL JOINS
QUARY:
Select * from CountryStatus
Right Outer Join PRODUCTS
ON
CountryStatus.ProductID=PRODUCTS.ProductID
RESULT:

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SQL JOINS
b. Left Outer Join
Left outer join returns all records/rows from left table and from right
table returns only matched records.
Syntax:
Select * from Table 1
Left Outer Join Table 2
ON
Table 1.Column 1=Table 2.Column
1

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SQL JOINS
RESULT:
QUARY:
Select * from CountryStatus
Left Outer Join PRODUCTS
ON
CountryStatus.ProductID=PRODUCTS.ProductID

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SQL JOINS
c. Full Outer Join
Full outer join combines left outer join and right outer join. This join
returns all records/rows from both the tables.
Syntax:
Select * from Table 1
Full Outer Join Table 2
ON
Table 1.Column 1=Table 2.Column
1

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SQL JOINS
QUARY:
Select * from CountryStatus
Full Outer Join PRODUCTS
ON
CountryStatus.ProductID=PRODUCTS.ProductID
RESULT:

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SQL JOINS
III. Cross Join
This join returns records/rows that are multiplication of record number
from both the tables means each row on left table will related to each row
of right table.
Syntax:
Select * from Table 1
Cross Join Table 2

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SQL JOINS
QUARY:
Select * from CountryStatus
Cross Join PRODUCTS
RESULT:

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