How to create tables with columns that have range in MySQL? - mysql

Question

I want to create a table for the following:
One pokemon must have and can only have one trainer.
One pokemon may evolve into many other pokemons.
The pokemon name has a maximum of 50 characters and can not be
blank.
The dex number has 3-numeric-digit and can not be blank.
The pokemon height is a whole number and ranges [0, 1,000] cm
inclusive.
The pokemon weight ranges [0.00, 1,000.00] kg inclusive.
The pokemon color has a maximum of 20 characters.
The pokemon type has a maximum of 15 characters. If an INSERT
doesn't list the pokemon type value, it should default to Grass
I am stuck specifically on number 5. How do I apply that to my table? Also, another question is how do I apply numbers 5-6 and 8 also? How can I also assign the EvolvedFrom as one of the Foreign Keys? I don't know where to refrence it. I am a little bit confused, so please help. Thank you so much.
Table Reference
ERD of the table to be created
This is my sample code that I have created:
CREATE TABLE pokemon(
pokemonId int,
pokemonDexNum int(3) NOT NULL,
pokemonName varchar(50) NOT NULL,
pokemonHeightCm int unsigned,
CONSTRAINT CHK_pokemonHeightCm CHECK (pokemonHeightCm <= 1000)
pokemonWeightKg int NOT NULL,
pokemonColor varchar(50),
pokemonType varchar(50),
trainerId int NOT NULL,
evolvedFrom varchar(50),
PRIMARY KEY (pokemonId),
FOREIGN KEY (trainerId) REFERENCES trainer(trainerId),
FOREIGN KEY (evolvedFrom) REFERENCES pokemon(evolvedInto) --THIS LINE IS INCORRECT. HELP--
);

Answer 1

Try to include a constrain as below.
CREATE TABLE pokemon(
pokemonHeightCm int() NOT NULL,
CONSTRAINT pokemonHeightCm_Ck CHECK (pokemonHeightCm BETWEEN 0 AND 1000),
... and the rest

Answer 2

Try the below, I haven't tested the syntaxes:
CREATE TABLE pokemon(
pokemonId int ,
pokemonDexNum int(3) NOT NULL, #rule 4
pokemonName varchar(50) NOT NULL, #rule 3
pokemonHeightCm int NOT NULL, CONSTRAINT CHK_pokemonHeightCm CHECK (pokemonHeightCm <= 1000), #rule 5
pokemonWeightKg decimal NOT NULL, CONSTRAINT CHK_pokemonWeightKg CHECK (pokemonWeightKg <= 1000.00), #rule 6
pokemonColor varchar(20), #rule 7
pokemonType varchar(15) NOT NULL DEFAULT 'Grass', #rule 8
trainerId int NOT NULL,
evolvedFrom int,
PRIMARY KEY (pokemonId), #rule 1
FOREIGN KEY (trainerId) REFERENCES trainer(trainerId), #rule 1
FOREIGN KEY (evolvedFrom) REFERENCES pokemon(pokemonId) #rule 2
);