Different SQL JOINs

[netcat-na-diary]

Different SQL JOINs
Before we continue with examples, we will list the types the different SQL JOINs you can use:

INNER JOIN: Returns all rows when there is at least one match in BOTH tables
LEFT JOIN: Return all rows from the left table, and the matched rows from the right table
RIGHT JOIN: Return all rows from the right table, and the matched rows from the left table
FULL JOIN: Return all rows when there is a match in ONE of the tables

SQL INNER JOIN

SELECT column_name(s)
FROM table1
INNER JOIN table2
ON table1.column_name=table2.column_name;

SELECT column_name(s)
FROM table1
JOIN table2
ON table1.column_name=table2.column_name;

SQL LEFT JOIN

SELECT column_name(s)
FROM table1
LEFT JOIN table2
ON table1.column_name=table2.column_name;

SELECT column_name(s)
FROM table1
LEFT OUTER JOIN table2
ON table1.column_name=table2.column_name;

SQL RIGHT JOIN

SELECT column_name(s)
FROM table1
RIGHT JOIN table2
ON table1.column_name=table2.column_name;

SELECT column_name(s)
FROM table1
RIGHT OUTER JOIN table2
ON table1.column_name=table2.column_name;

@темы: MySQL

Comments

[Гость]

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