Mysql how to add more than one value (in one box) - mysql

Question

I am trying to add more than one value
INSERT INTO Requierments (item_ID, SName) VALUES (
05, 'Exotic Weapons''basic weapon');
is that possible? i have all ready tried | and & but i am not allowed to do that.
the idea is to demonstrate that item_ID requires more than one Sname.
and if no SName are needed, how do i code that, in the alter table it shows me that they are by default '0' for item_ID and '' for Sname, but when i try:
INSERT INTO Requierments (item_ID, SName) VALUES (
02, '');
or
INSERT INTO Requierments (item_ID, SName) VALUES (
02, );
error occurs. item_ID and SName are the primary key and foreign key to two different tables
CREATE TABLE `requierments` (
`item_ID` int(11) NOT NULL DEFAULT '0',
`SName` varchar(30) NOT NULL DEFAULT '',
PRIMARY KEY (`item_ID`,`SName`),
KEY `SName` (`SName`),
CONSTRAINT `requierments_ibfk_1` FOREIGN KEY (`item_ID`) REFERENCES `item` (`ID`),
CONSTRAINT `requierments_ibfk_2` FOREIGN KEY (`SName`) REFERENCES `talents` (`SkillName`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
CREATE TABLE `talents` (
`SkillName` varchar(40) NOT NULL DEFAULT '',
`Bonus` varchar(30) DEFAULT NULL,
`Description` varchar(90) DEFAULT NULL,
`R_Str` int(11) DEFAULT NULL,
`R_WS` int(11) DEFAULT NULL,
`R_BS` int(11) DEFAULT NULL,
`R_Fel` int(11) DEFAULT NULL,
`R_Per` int(11) DEFAULT NULL,
`R_Int` int(11) DEFAULT NULL,
`R_Agi` int(11) DEFAULT NULL,
`R_WP` int(11) DEFAULT NULL,
`Talent_requiret` varchar(40) DEFAULT NULL,
PRIMARY KEY (`SkillName`),
KEY `Talent_requiret` (`Talent_requiret`),
CONSTRAINT `talents_ibfk_1` FOREIGN KEY (`Talent_requiret`) REFERENCES `talents` (`SkillName`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
CREATE TABLE `item` (
`ID` int(11) NOT NULL DEFAULT '0',
`Name_` varchar(30) DEFAULT NULL,
`Weight` int(11) DEFAULT NULL,
`Value_` int(11) DEFAULT NULL,
`Availability` varchar(30) DEFAULT NULL,
PRIMARY KEY (`ID`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
Here are the 3 tables where i want to store in the requirement table what item_ID requires to be used under SName, since one item can be required to have more than one SName or none, it get confused on what to do.

Answer 1

The 'Exotic Weapons''basic weapon' syntax is interpreted as 'Exotic Weapons'basic weapon' (see the manual page on String Literals). You can store both, if you separate them with a special character like a comma or something ('Exotic Weapons,basic weapon'), but this is a bad idea, for the reasons that follow.
Anytime you are tempted to store multiple values in one column, you should have a new table to store each value and link it to the item_ID in question. This is called "normalization" - it makes your database more stable, your application code simpler, and everything just more likely to work as you move forward and modify things. Search for "database normalization" and read about how to do the kind of thing you are trying to do.
EDIT: It's still a little hard to tell what you're trying to do, but it looks like you just want to store multiple tuples in items. Example:
INSERT INTO Requierments (item_ID, SName) VALUES
(5, 'Exotic Weapons'),
(5, 'basic weapon');
Note that it should be 5, not 05. That's why INSERT INTO Requierments (item_ID, SName) VALUES ( 02, ''); fails. Also, you can't just omit a value and have blank space, like in your other example: INSERT INTO Requierments (item_ID, SName) VALUES ( 02, );
Honestly, it's very hard to tell what you're even trying to do here, and there seems to be some confusion about the basics of table structure and SQL syntax. For example, this statement is very confusing and unclear: "since one item can be required to have more than one SName or none, it get confused on what to do." If you can provide some more clarity about how you want the tables to relate to each other and where you are stuck, you will get more help from the SO community.