Multiple [MySQL] Where

I need to using multiple mysql where: Example
How to

 

Hi,
think, how 1 record can have two different username values? Try two seperate queries:

[URL="http://www.php.net/mysql_query"][COLOR=#990000]mysql_query[/COLOR][/URL][LEFT][COLOR=#009900][FONT=monospace]([/FONT][/COLOR][COLOR=#0000FF][FONT=monospace]"SELECT * FROM user [/FONT][/COLOR][COLOR=#0000FF][FONT=monospace]WHERE[/FONT][/COLOR][COLOR=#0000FF][FONT=monospace] username='%John%'"[/FONT][/COLOR][COLOR=#009900][FONT=monospace])[/FONT][/COLOR][COLOR=#339933][FONT=monospace];[/FONT][/COLOR][/LEFT]

Code (markup):

[URL="http://www.php.net/mysql_query"][COLOR=#990000]mysql_query[/COLOR][/URL][LEFT][COLOR=#009900][FONT=monospace]([/FONT][/COLOR][COLOR=#0000FF][FONT=monospace]"SELECT * FROM user [/FONT][/COLOR][COLOR=#0000FF][FONT=monospace]WHERE[/FONT][/COLOR][COLOR=#0000FF][FONT=monospace] username='%Other%'"[/FONT][/COLOR][COLOR=#009900][FONT=monospace])[/FONT][/COLOR][COLOR=#339933][FONT=monospace];[/FONT][/COLOR][/LEFT]

Code (markup):

another problem is '*' Look this:

[URL="http://www.php.net/mysql_query"][COLOR=#990000]mysql_query[/COLOR][/URL][LEFT][COLOR=#009900][FONT=monospace]([/FONT][/COLOR][COLOR=#0000FF][FONT=monospace]"SELECT * FROM user WHERE username='%John%'"[/FONT][/COLOR][COLOR=#009900][FONT=monospace])[/FONT][/COLOR][COLOR=#339933][FONT=monospace];[/FONT][/COLOR][/LEFT]

Code (markup):

That will select all the fields from mysql table. If you want to select only specific fields instead of '*' write something else for example:

[URL="http://www.php.net/mysql_query"][COLOR=#990000]mysql_query[/COLOR][/URL][LEFT][COLOR=#009900][FONT=monospace]([/FONT][/COLOR][COLOR=#0000FF][FONT=monospace]"SELECT username FROM user [/FONT][/COLOR][COLOR=#0000FF][FONT=monospace]WHERE[/FONT][/COLOR][COLOR=#0000FF][FONT=monospace] username='%John%'"[/FONT][/COLOR][COLOR=#009900][FONT=monospace])[/FONT][/COLOR][COLOR=#339933][FONT=monospace];[/FONT][/COLOR][/LEFT]

Code (markup):

another examples can be found here:
http://www.tuxradar.com/practicalphp/9/3/13

best regards,
s.

 

Do you mean to use LIKE instead of equals?

Either way, use or instead of and. If that doesn't get what you're after, perhaps try explaining yourself a little better.

 

You can use WHERE only once but with several ANDs
Also if you want to join other query LEFT JOIN or RIGHT JOIN may help you

 

mysql_query("SELECT * FROM USER where username LIKE 'John' AND LIKE 'Other'");
Selects all rows in user, where the username is *john* and *other*

mysql_query("SELECT * FROM USER where username LIKE 'John' OR LIKE 'Other'");
Selects all rows in user, where the username is *john* or *other*

 

mysql_query("SELECT * FROM USER where username LIKE '%John%' AND username LIKE '%Other%'");

 

MySQL has full-text searching so ideally you'd want to use . Avoid using wildcard at the start of the search string otherwise it cant use the index for this field. Indexes get pretty large an inefficient for full-text though, so ignore this if you aren't indexing. Although you should if this is just a varchar username field.

 

This multiple select Rowss