CROSS JOIN tutorial in php

 CROSS JOIN Syntax :

SELECT columns FROM table1 CROSS JOIN table2;


If we want to perform CROSS JOIN on two tables named "personaltwo" and "city" then we can use below shown sql query :

SELECT * FROM personaltwo CROSS JOIN city;


If we want to use alias name for table name "personaltwo" and "city" with CROSS JOIN then we can use below shown sql query :

In "personaltwo" table, column "city" is FOREIGN KEY and In "city" table, column "cid" is PRIMARY KEY.

SELECT * FROM personaltwo p CROSS JOIN city c;


If we want to select some specific columns from tables "personaltwo" and "city" with CROSS JOIN then we can use below shown sql query :

SELECT p.id, p.name, c.cityname FROM personaltwo p CROSS JOIN city c;


If we want to change the column name from "name" to "Name" and "cityname" to "CityName" with CROSS JOIN then we can use below shown sql query :

SELECT p.id, p.name AS Name, c.cityname AS CityName FROM personaltwo p CROSS JOIN city c;

We can perform above same operation using below shown sql query :

Both the query will work same.

SELECT p.id, p.name AS Name, c.cityname AS CityName FROM personaltwo p, city c;

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