mysql error code 1022 duplicate key in table -

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i searched through prior posts didn't quite find answer, here goes ...

i have table

create table `leags`  (    `lid` int(10) not null auto_increment,    `lname` varchar(255) not null,    `description` varchar(255) default null,    `links` varchar(255) default null,    `cid` int(10) not null,    primary key (`lid`),    key `index2` (`lid`,`lname`),    key `index3` (`lid`,`lname`,`cid`),    key `cid_idx` (`cid`),    constraint `cid` foreign key (`cid`) references `cats` (`cid`) )  engine=innodb auto_increment=2 default charset=utf8 comment='leagues'$$

i have table has above pk foreign key.

create  table `tams`  (   `tid` int(10) not null ,   `tname` varchar(255) not null ,   `lid` int(10) null ,   `url` text null ,   primary key (`tid`) ,   index `index2` (`tid` asc, `tname` asc) ,   index `index3` (`tid` asc, `tname` asc, `lid` asc) ,   index `lid_idx` (`lid` asc) ,   constraint `lid`     foreign key (`lid` )     references leags` (`lid` )     on delete no action     on update no action) engine = innodb

the creation of table works fine, run problem creating below table.

create  table if not exists spsched  (   `spscid` int(10) not null auto_increment ,   `startdate` date not null ,   `enddate` date null ,   `starttime` time not null ,   `endtime` time null ,   `htid` int(10) null ,   `type` varchar(45) null ,   `atid` int(10) null ,   `leagid` int(10) null ,   primary key (`spscid`) ,   unique index `spscid_unique` (`spscid` asc) ,   index `htid_idx` (`htid` asc) ,   index `atid_idx` (`atid` asc) ,   index `lid_idx` (`leagid` asc) ,   constraint `tid`     foreign key (`htid` )     references tams (`tid` )     on delete no action     on update no action,   constraint `atid`     foreign key (`atid` )     references tams` (`tid` )     on delete no action     on update no action,   constraint `lid`     foreign key (`leagid` )     references leags (`lid` )     on delete no action     on update no action) engine = innodb

if remove lid fk , constraint above sql, table creates fine. can't figure out duplicate key in here. appreciated. thanks.

lid have constraint name in table tams lid.

i suspect system not case sensitive.

http://richardfearn.wordpress.com/2007/03/12/case-insensitive-constraint-names-in-mysql/

internally, innodb stores foreign key constraint names case-insensitive, database name prepended. although onedatabase.b_ibfk_1 treated different anotherdatabase.b_ibfk_1, photos.b_ibfk_1 , photos.b_ibfk_1 treated same.

just pick name key.


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