将多个命令插入准备好的语句 rails

Question

我正在使用 rails 3 并且我需要在我的一个迁移中执行原始 sql 并且我需要使用准备好的语句来执行它，因为这是避免出现问题的最佳方法由于单身，声明等等。有没有一种方法可以在单个 prepare 语句中执行多个 sql 语句。我正在为我的数据库使用 PostgreSQL

这是我尝试过的代码

  CONN = ActiveRecord::Base.connection.raw_connection  
  sql = %Q[
            INSERT INTO table1 
              (
                name,
                email,
                phone,
                created_at,
                updated_at
               ) 
              VALUES 
              (
                , 
                , 
                ,
                current_timestamp, 
                current_timestamp
              );
            UPDATE table2 
              SET column_1 = 
              WHERE id = ;
            UPDATE contacts SET 
              column_2 = 
              WHERE id = 
          ]

  CONN.prepare('insert_and_update', sql)
  CONN.exe_prepared('insert_and_update', [
      name,
      email,
      phone,
      customer.id
    ])

但是我收到错误

 cannot insert multiple commands into a prepared statement

Answer 1

把它变成一个命令：

with i as (
    insert into table1 (
        name,
        email,
        phone,
        created_at,
        updated_at
    ) values (
        , 
        , 
        ,
        current_timestamp, 
        current_timestamp
), u as (
    update table2 
    set column_1 = 
    where id = 
)
update contacts 
set column_2 = 
where id = 
;

将多个命令插入准备好的语句 rails

Inserting multiple commands into prepared statement rails

postgresql

execute

prepared-statement

prepare

ruby-on-rails-3