Is there any special way for variable++?

[typingcat]

Say I have a table in a MySQL server
ID USERNAME COUNT
0 JOHN 2
1 JANE 3
2 HOMER 3
3 MOE 2

If I want to increase Homer's count by 1,
The plain way would be;
1)$TEMP=SELECT COUNT WHERE ID=2
2)$TEMP++
2)UPDATE .. SET COUNT=$temp...
I guess if there is any special way to increase the int value by one?
For increasing 1 is so commonly used (that's why c,c++,java,C# has the
operator ++).

[Ewoud Dronkert]

ty*******@gmail.com wrote:

Say I have a table in a MySQL server
ID USERNAME COUNT
0 JOHN 2
1 JANE 3
2 HOMER 3
3 MOE 2
Generally, it's a bad idea to give a column a name that is also a sql
preserved word (count).
If I want to increase Homer's count by 1,
The plain way would be;
1)$TEMP=SELECT COUNT WHERE ID=2
2)$TEMP++
2)UPDATE .. SET COUNT=$temp...
No, you would let the database do the work:

UPDATE Tablename SET count=count+1 WHERE id=2

May need `` around count, because of problem mentioned above. See
http://php.net/mysql-query and
http://dev.mysql.com/doc/refman/4.1/en/update.html
I guess if there is any special way to increase the int value by one?
For increasing 1 is so commonly used (that's why c,c++,java,C# has the
operator ++).

Yes, that operator also exists in PHP:
http://php.net/manual/en/language.op....increment.php

--
E. Dronkert

[jkimball4]

you can do this in the mysql itself depending on what server version
you are using. try update .. set count=count+1 where id=2 and
username="homer";

ty*******@gmail.com wrote:

Say I have a table in a MySQL server
ID USERNAME COUNT
0 JOHN 2
1 JANE 3
2 HOMER 3
3 MOE 2

If I want to increase Homer's count by 1,
The plain way would be;
1)$TEMP=SELECT COUNT WHERE ID=2
2)$TEMP++
2)UPDATE .. SET COUNT=$temp...
I guess if there is any special way to increase the int value by one?
For increasing 1 is so commonly used (that's why c,c++,java,C# has the
operator ++).