```ruby
# encoding: UTF-8

require 'active_record'

module Carto
  class SearchTweet < ActiveRecord::Base

    belongs_to :user, inverse_of: :users
    belongs_to :user_table, class_name: 'Carto::UserTable'

    def self.twitter_imports_count(query, date_from, date_to)
      query
        .where('search_tweets.state' => ::SearchTweet::STATE_COMPLETE)
        .where('search_tweets.created_at >= ? AND search_tweets.created_at <= ?', date_from, date_to + 1.days)
        .sum("search_tweets.retrieved_items".lit).to_i
    end

    def self.twitter_imports_count_by_date(query, date_from, date_to)
      query
        .where('search_tweets.state' => ::SearchTweet::STATE_COMPLETE)
        .where('search_tweets.created_at >= ? AND search_tweets.created_at <= ?', date_from, date_to + 1.days)
        .group("date_trunc('day', search_tweets.created_at)")
        .select("date_trunc('day', search_tweets.created_at), SUM(search_tweets.retrieved_items)")
        .all
        .map { |t| { t.date_trunc => t.sum } }
        .reduce({}, &:merge)
    end
  end
end
```

Use proper types in search tweets query
user
```ruby
# encoding: UTF-8

require 'active_record'

module Carto
  class SearchTweet < ActiveRecord::Base

    belongs_to :user, inverse_of: :users
    belongs_to :user_table, class_name: 'Carto::UserTable'

    def self.twitter_imports_count(query, date_from, date_to)
      query
        .where('search_tweets.state' => ::SearchTweet::STATE_COMPLETE)
        .where('search_tweets.created_at >= ? AND search_tweets.created_at <= ?', date_from, date_to + 1.days)
        .sum("search_tweets.retrieved_items".lit).to_i
    end

    def self.twitter_imports_count_by_date(query, date_from, date_to)
      query
        .where('search_tweets.state' => ::SearchTweet::STATE_COMPLETE)
        .where('search_tweets.created_at >= ? AND search_tweets.created_at <= ?', date_from, date_to + 1.days)
        .group("date_trunc('day', search_tweets.created_at)")
        .select("date_trunc('day', search_tweets.created_at) as date, SUM(search_tweets.retrieved_items) as count")
        .all
        .map { |t| { Date.parse(t.date) => t.count.to_i } }
        .reduce({}, &:merge)
    end
  end
end
```
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