Кирилл

create table core_keywords(
    keyword_id serial primary key,
    keyword    varchar(100)
);
create unique index u_idx_keyword on core_keywords(lower(keyword));
create index t_idx_keywords on core_keywords using gin (lower(keyword) gin_trgm_ops);

create table core_keywords_entry(
    keyword_id int not null references core_keywords,
    created_at timestamp with time zone not null default CURRENT_TIMESTAMP,
    primary key (keyword_id, created_at)
);

select 
    e.keyword_id, 
    count(*) 
from core_keywords_entry as e
join core_keywords as k using(keyword_id)
where lower(k.keyword) like  '%something%'
group by 1

$people = array('Иван Иваныч', 'Сергей Сергеич', 'Сидор Сидорович');
$b=$pdo->prepare(" INSERT INTO `organization` SET name=:name ");
for(){  
    $b->bindParam(":name",$people[$i]);
    $b->execute();
}