Question about ERROR 1005 (HY000)

Newbie to MySQL, I don't know why it shows "ERROR 1005 (HY000): Can't create table 'test.project' (errno: 150)". I tried index it, checked engine.

Please give some help.
Thanks,
ZZ


drop table driver;
drop table project;
drop table plant;
drop table customer;

create table customer(
	customer_ID	numeric(3),
	index(customer_ID),
	customer_name text	not null,
	location text,
	primary key (customer_ID)
);

create table plant(
	plant_name	text,
	index(plant_name(8)),
	plant_type	text,
	process_unit	text,
	plant_customer_ID numeric(3) not null,
	index(plant_customer_ID),
	primary key (plant_name(8)),
	foreign key (plant_customer_ID) references customer(customer_ID)
)engine = innodb;

create table project(
	plant_name text,
	index(plant_name(8)),
	project_number	text,
	primary key (project_number(8)),
	foreign key (plant_name(8)) references plant(plant_name)
)engine = innodb;

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zzl630Asked:
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wolfgang_93Commented:
A Google search on MySQL errno 150 indicates a foreign key problem in
creating your project table.

I see in your command this clause:
foreign key (plant_name(8)) references plant(plant_name)

This looks incorrect in that you include "(8)" in the clause. It should be more
correctly like this:

foreign key (plant_name) references plant(plant_name)

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zzl630Author Commented:
Hey Wolfgang 93,

Thanks for your reply.

Yes, I changed that before. Then it shows  ERROR 1170 (42000): BLOB/TEXT column ‘plant_name’ used in key specification without a key length.

Just moved from Oracle to MySql, confused here.

Thanks,
ZZ
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zzl630Author Commented:
I guess I figured out the problem by this link
Thanks for your help,Wolfgang 93.

ZZ
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