Can a MySQL query turn rows into columns?
Sometimes the first step to solving your problem is knowing what it's called. After that, it's simply a matter of googling. What you are trying to create is called a pivot table or crosstab report. Here is a link explaining how to create pivot tables in MySQL. And here is a more in depth tutorial.
UPDATE:
Now that you've updated the question, I have a clearer idea of what you are trying to accomplish. I'll give you an alternative solution which is similar but not exactly what you want based on MySQL's GROUP_CONCAT function.
select t1.FirstName, t1.LastName, group_concat(concat(t2.FirstName, ' ', t2.LastName))
from member_information as t1
left outer join member_dependent_information as t2 on t2.MemberID=t1.MemberID
group by t1.MemberID;
I've verified this query as follows. First the setup:
create table member_information (
MemberID int unsigned auto_increment primary key,
FirstName varchar(32) not null,
LastName varchar(32) not null
) engine=innodb;
create table member_dependent_information (
MemberID int unsigned not null,
FirstName varchar(32) not null,
LastName varchar(32) not null,
Type int unsigned not null,
foreign key (MemberID) references member_information(MemberID)
) engine=innodb;
insert into member_information (MemberID, FirstName, LastName) values
(1, 'John', 'Harris'),
(2, 'Sarah', 'Thompson'),
(3, 'Zack', 'Lewis');
insert into member_dependent_information (MemberID, FirstName, LastName, `Type`) values
(1, 'Amy', 'Harris', 1),
(2, 'Bryan', 'Thompson', 1),
(2, 'Dewey', 'Thompson', 2),
(2, 'Tom', 'Thompson', 2),
(3, 'Harry', 'Lewis', 2),
(3, 'Minka', 'Lewis', 1);
And now the query and results:
mysql> select t1.FirstName, t1.LastName, group_concat(concat(t2.FirstName, ' ', t2.LastName))from member_information as t1
-> left outer join member_dependent_information as t2 on t2.MemberID=t1.MemberID
-> group by t1.MemberID;
+-----------+----------+------------------------------------------------------+
| FirstName | LastName | group_concat(concat(t2.FirstName, ' ', t2.LastName)) |
+-----------+----------+------------------------------------------------------+
| John | Harris | Amy Harris |
| Sarah | Thompson | Bryan Thompson,Dewey Thompson,Tom Thompson |
| Zack | Lewis | Harry Lewis,Minka Lewis |
+-----------+----------+------------------------------------------------------+
3 rows in set (0.00 sec)
I'm not sure how the OP transformed from having programID
and Status
to how it is now, but the closest thing I would be able to get is (which does not require pivot tables):
SELECT t1.MemberID,
t1.FirstName,
t1.LastName,
concat(t2.FirstName, ' ', t2.LastName) as Spouse_Name,
group_concat(concat(t3.FirstName, ' ', t3.LastName) ORDER BY t3.FirstName) as Children_names
FROM member_information t1
LEFT JOIN member_dependent_information t2 ON (t1.MemberID=t2.MemberID AND t2.Type=1)
LEFT JOIN member_dependent_information t3 ON (t1.MemberID=t3.MemberID and t3.Type=2)
GROUP BY MemberID;
Which produces:
+----------+-----------+----------+----------------+-----------------------------+ | MemberID | FirstName | LastName | Spouse_Name | Children_names | +----------+-----------+----------+----------------+-----------------------------+ | 1 | John | Harris | Amy Harris | NULL | | 2 | Sarah | Thompson | Bryan Thompson | Dewey Thompson,Tom Thompson | | 3 | Zack | Lewis | Minka Lewis | Harry Lewis | +----------+-----------+----------+----------------+-----------------------------+
and it would be "easy" with any programming language to extract that Children_names
into separate columns.