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标题:
relationship tables
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作者:
st.linux.ily
时间:
2004-03-27 00:17
标题:
relationship tables
Now we meet a problem, when we use one of the below:
alter table services
add foreign key (`Customer ID`) references `customer`.`Customer ID` on delete cascade
or
alter table services
add foreign key (`Customer ID`) references customer(`Customer ID`) on delete cascade
we get the error message:
Error Code : 1005
Can't create table '.\pc\#sql-15b0_1.frm' (errno: 150)
(0 ms taken)
any ideas ?
the two tables are:
create table `customer` (
`Customer ID` int(10) not null default `0`,
`Company` varchar(50) default null,
`Email` varchar(50) default null,
primary key (`Customer ID`)
)type=innodb
create table `services` (
`Services ID` int(10) not null default `0`,
`Customer ID` int(10) default null,
`Services Date` timestamp(14) not null,
`Problem` blob,
primary key (`Services ID`),
key `Customer` (`Customer ID`)
)type=innodb
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