Special Characters in MySQL Table Name

Question

I created a table as follows:

CREATE TABLE IF NOT EXISTS 'e!' (
`aa` int(11) unsigned NOT NULL auto_increment,
`showName` TEXT NOT NULL default '',
`startDateTime` DATETIME NOT NULL default '',
`endDateTime` DATETIME NOT NULL default '',
PRIMARY KEY  (`aa`)
) ENGINE=MyISAM  DEFAULT CHARSET=utf8

Then tried to insert with the query:

INSERT INTO e! (showname, startDateTime, endDateTime) VALUES('E! News ', '2012-05-03 19:00:00', '2012-05-03 20:00:00')

And it errors due to the ! in the table name, I'm assuming ! is a special character in mysql. I tried to escape it but the query still failed.

So, can I have special characters like ! or & in the table name? If yes, then I probably have to encode them somehow?

Thanks.

Answer 1

Quote your ambiguous or "special" table names with a back tick:

INSERT INTO `e!` ...

Or better, don't use special characters in table names to avoid such problems.

Answer 2

According to the docs, you can't:

Identifiers are converted to Unicode internally. They may contain these characters:

• Permitted characters in unquoted identifiers: ASCII: [0-9,a-z,A-Z$_] (basic Latin letters, digits 0-9, dollar, underscore) Extended: U+0080 .. U+FFFF

• Permitted characters in quoted identifiers include the full Unicode Basic Multilingual Plane (BMP), except U+0000: ASCII: U+0001 .. U+007F Extended: U+0080 .. U+FFFF

Source: http://dev.mysql.com/doc/refman/5.5/en/identifiers.html

Answer 3

Try with this:

    CREATE TABLE IF NOT EXISTS `e!` (
`aa` int(11) unsigned NOT NULL auto_increment,
`showName` TEXT NOT NULL default '',
`startDateTime` DATETIME NOT NULL ,
`endDateTime` DATETIME NOT NULL ,
PRIMARY KEY  (`aa`)
) ENGINE=MyISAM  DEFAULT CHARSET=utf8