MySql: Count amount of times the words occur in a column

Question

For instance, if I have data in a column like this

data
I love book
I love apple
I love book
I hate apple
I hate apple

How can I get result

Answer 1

Split-string procedure is not my job. You can find it here

http://forge.mysql.com/tools/tool.php?id=4

I wrote you the rest of code.

drop table if exists mytable;
create table mytable (
id int not null auto_increment primary key,
mytext varchar(1000)
) engine = myisam;

insert into mytable (mytext)
values ('I love book,but book sucks!What do you,think   about it? me too'),('I love apple! it rulez.,No, it sucks a lot!!!'),('I love book'),('I hate apple!!! Me too.,!'),('I hate apple');

drop table if exists mywords;
create table mywords (
id int not null auto_increment primary key,
word varchar(50)
) engine = myisam;


delimiter //
drop procedure if exists split_string //
create procedure split_string (
    in input text
    , in `delimiter` varchar(10) 
) 
sql security invoker
begin
    declare cur_position int default 1 ;
    declare remainder text;
    declare cur_string varchar(1000);
    declare delimiter_length tinyint unsigned;

    drop temporary table if exists SplitValues;
    create temporary table SplitValues (
        value varchar(1000) not null 
    ) engine=myisam;

    set remainder = input;
    set delimiter_length = char_length(delimiter);

    while char_length(remainder) > 0 and cur_position > 0 do
        set cur_position = instr(remainder, `delimiter`);
        if cur_position = 0 then
            set cur_string = remainder;
        else
            set cur_string = left(remainder, cur_position - 1);
        end if;
        if trim(cur_string) != '' then
            insert into SplitValues values (cur_string);
        end if;
        set remainder = substring(remainder, cur_position + delimiter_length);
    end while;

end //
delimiter ;


delimiter // 
drop procedure if exists single_words//
create procedure single_words()
begin
declare finish int default 0;
declare str varchar(200);
declare cur_table cursor for  select replace(replace(replace(replace(mytext,'!',' '),',',' '),'.',' '),'?',' ') from mytable;
declare continue handler for not found set finish = 1;
truncate table mywords;
open cur_table;
my_loop:loop
fetch cur_table into str;
if finish = 1 then
leave my_loop;
end if;
call split_string(str,' ');
insert into mywords (word) select * from splitvalues;
end loop;
close cur_table;
end;//
delimiter ;

call single_words();

select word,count(*) as word_count 
from mywords
group by word;

+-------+------------+
| word  | word_count |
+-------+------------+
| a     |          1 |
| about |          1 |
| apple |          3 |
| book  |          3 |
| but   |          1 |
| do    |          1 |
| hate  |          2 |
| I     |          5 |
| it    |          3 |
| lot   |          1 |
| love  |          3 |
| me    |          2 |
| No    |          1 |
| rulez |          1 |
| sucks |          2 |
| think |          1 |
| too   |          2 |
| What  |          1 |
| you   |          1 |
+-------+------------+
19 rows in set (0.00 sec)

The code must be improved in order to consider any punctuation but this is the general idea.