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A single MySQL select query on two tables is possible?
Yes, it is possible. Following is the syntax −
select * from yourTableName1,yourTableName2;
Let us first create a table −
mysql> create table DemoTable1 -> ( -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY -> ); Query OK, 0 rows affected (0.54 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable1 values(),(),(); Query OK, 3 rows affected (0.14 sec) Records: 3 Duplicates: 0 Warnings: 0
Display all records from the table using select statement −
mysql> select * from DemoTable1;
This will produce the following output −
+----+ | Id | +----+ | 1 | | 2 | | 3 | +----+ 3 rows in set (0.00 sec)
Here is the query to create second table −
mysql> create table DemoTable2 -> ( -> FirstName varchar(10) -> ); Query OK, 0 rows affected (0.58 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable2 values('Chris'),('David'),('Sam');
Query OK, 3 rows affected (0.10 sec)
Records: 3 Duplicates: 0 Warnings: 0Display all records from the table using select statement −
mysql> select * from DemoTable2;
This will produce the following output −
+-----------+ | FirstName | +-----------+ | Chris | | David | | Sam | +-----------+ 3 rows in set (0.00 sec)
Following is the query to perform select query on two tables −
mysql> select Id,FirstName from DemoTable1,DemoTable2;
This will produce the following output −
+----+-----------+ | Id | FirstName | +----+-----------+ | 1 | Chris | | 2 | Chris | | 3 | Chris | | 1 | David | | 2 | David | | 3 | David | | 1 | Sam | | 2 | Sam | | 3 | Sam | +----+-----------+ 9 rows in set (0.00 sec)
Updated on: 10-Dec-2019
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