ActiveRecord的执行原始SQL [英] ActiveRecord execute raw sql
问题描述
我尝试用中间结果specialy报表创建表。 我正在做的事情是:
I try create table with intermediate results specialy for report. What I'm doing is:
ActiveRecord::Base.connection.execute(sql_query)
sql_query是:
sql_query is:
SET SQL_SAFE_UPDATES=0;
DROP TABLE IF EXISTS _by_people_daily;
CREATE TEMPORARY TABLE _by_people_daily
AS
SELECT #{date_int} AS date_int,
memberships.user_id AS user_id,
ci.community_id,
ci.content_id,
contents.composite_type AS content_type,
COUNT(views.id) AS views,
COUNT(comments.id) AS comments,
COUNT(shares.id) AS shares,
COUNT(likes.id) AS likes,
COUNT(uploads.id) AS uploads
FROM community_items AS ci
JOIN memberships ON memberships.community_id = ci.community_id
JOIN contents ON ci.content_id = contents.id
JOIN (SELECT '#{day_begin}' as start_date, '#{day_end}' as end_date) AS dates
LEFT JOIN contents AS uploads
ON uploads.id = ci.content_id
AND uploads.user_id = memberships.user_id
AND uploads.created_at BETWEEN dates.start_date AND dates.end_date
LEFT JOIN comments
ON comments.content_id = ci.content_id
AND comments.user_id = memberships.user_id
AND comments.created_at BETWEEN dates.start_date AND dates.end_date
LEFT JOIN shares
ON shares.content_id = ci.content_id
AND shares.user_id = memberships.user_id
AND shares.created_at BETWEEN dates.start_date AND dates.end_date
LEFT JOIN likes
ON likes.content_id = ci.content_id
AND likes.user_id = memberships.user_id
AND likes.created_at BETWEEN dates.start_date AND dates.end_date
LEFT JOIN views
ON views.viewable_id = ci.content_id
AND views.viewable_type = 'Content'
AND views.user_id = memberships.user_id
AND views.created_at BETWEEN dates.start_date AND dates.end_date
WHERE COALESCE(views.id, comments.id, shares.id, likes.id, uploads.id ) IS NOT NULL
#{ " AND users.company_id = #{@company.id} " if @company }
GROUP BY memberships.user_id, ci.community_id, ci.content_id, contents.composite_type ;
DELETE FROM intermediate_by_people WHERE date_int = #{date_int} ;
INSERT INTO intermediate_by_people
(date_int, user_id, community_id, content_id, content_type, views, comments, shares, uploads, likes)
SELECT date_int, user_id, community_id, content_id, content_type, views, comments, shares, uploads, likes
FROM _by_people_daily ;
我每次收到错误
I'm getting error every time
ActiveRecord::StatementInvalid: Mysql2::Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'DROP TABLE IF EXISTS _by_people_daily;
但是当我通过查询到MySQL客户端它正常工作。
But when I pass query to mysql client it working correctly.
我在做什么错误以及如何与ActiveRecord的执行几个SQL语句
What I'm doing wrong and how execute couple sql statements with ActiveRecord
推荐答案
的ActiveRecord的MySQL连接只能在默认情况下执行一个语句。要执行多条语句, CLIENT_MULTI_STATEMENTS
(65536)需要传递作为一个选项创建连接时。在code可能是这样的:
ActiveRecord's MySQL connection can only execute one statement by default. To execute multiple statements, CLIENT_MULTI_STATEMENTS
(65536) need to be passed as an option when creating the connection. The code may look like this:
ConnectionAdapters::MysqlAdapter.new(mysql, logger, [host, username, password, database, port, socket, 65536], config)
您可以找到 ConnectionAdapters :: MysqlAdapter.new
在你的mysql的宝石,并覆盖配置/初始化
。 这里是一个详细的指南。
You can find ConnectionAdapters::MysqlAdapter.new
in your mysql gem, and override that method in config/initializers
. Here is a detailed guide.
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