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How to merge MySQL results?
To merge, use simple join. Following is the syntax −
select aliasName1.yourColumnName1, aliasName1.yourColumnName2, . . .N aliasName2.yourColumnName1 from yourTableName1 aliasName1 . . . N join yourTableName2 aliasName2 on yourCondition;
Let us create a table −
mysql> create table demo8 −> ( −> id int, −> name varchar(20) −> ); Query OK, 0 rows affected (1.77 sec)
Insert some records into the table with the help of insert command −
mysql> insert into demo8 values(100,'John'); Query OK, 1 row affected (0.09 sec) mysql> insert into demo8 values(101,'Mike'); Query OK, 1 row affected (0.16 sec) mysql> insert into demo8 values(102,'Bob'); Query OK, 1 row affected (0.15 sec)
Display records from the table using select statement −
mysql> select *from demo8;
This will produce the following output −
+------+------+ | id | name | +------+------+ | 100 | John | | 101 | Mike | | 102 | Bob | +------+------+ 3 rows in set (0.00 sec)
Following is the query to create second table −
mysql> create table demo9 −> ( −> id int, −> age int −> ); Query OK, 0 rows affected (1.90 sec)
Insert some records into the table with the help of insert command −
mysql> insert into demo9 values(100,27); Query OK, 1 row affected (0.09 sec) mysql> insert into demo9 values(101,24); Query OK, 1 row affected (0.12 sec) mysql> insert into demo9 values(102,28); Query OK, 1 row affected (0.29 sec)
Display records from the table using select statement −
mysql> select *from demo9;
This will produce the following output −
+------+------+ | id | age | +------+------+ | 100 | 27 | | 101 | 24 | | 102 | 28 | +------+------+ 3 rows in set (0.00 sec)
Following is the query to merge results −
mysql> select tbl1.id,tbl1.name,tbl2.age −> from demo8 tbl1 −> join −> demo9 tbl2 −> on tbl1.id=tbl2.id;
This will produce the following output −
+------+------+------+ | id | name | age | +------+------+------+ | 100 | John | 27 | | 101 | Mike | 24 | | 102 | Bob | 28 | +------+------+------+ 3 rows in set (0.00 sec)
Updated on: 19-Nov-2020
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