https://ruby-china.org/moyuanming en-us <p>View ： &lt;% <a href="/tollprojects.each" class="user-mention" title="@tollprojects.each"><i>@</i>tollprojects.each</a> do |tollproject| %&gt; </p> <p>…… SQL ： CACHE (0.0ms) SELECT "tollprojects".* FROM "tollprojects" CACHE (0.0ms) SELECT "tollprojects".* FROM "tollprojects" WHERE "tollprojects"."tollproject_id" = 1 LIMIT 1 CACHE (0.0ms) SELECT "tollprojects".* FROM "tollprojects" WHERE "tollprojects"."tollproject_id" = 2 LIMIT 1 CACHE (0.0ms) SELECT "tollprojects".* FROM "tollprojects" WHERE "tollprojects"."id" = $1 LIMIT 1 [["id", 1]] CACHE (0.0ms) SELECT "tollprojects".* FROM "tollprojects" WHERE "tollprojects"."tollproject_id" = 3 LIMIT 1 CACHE (0.0ms) SELECT "tollprojects".* FROM "tollprojects" WHERE "tollprojects"."id" = $1 LIMIT 1 [["id", 1]] CACHE (0.0ms) SELECT "tollprojects".* FROM "tollprojects" WHERE "tollprojects"."tollproject_id" = 4 LIMIT 1 CACHE (0.0ms) SELECT "tollprojects".* FROM "tollprojects" WHERE "tollprojects"."id" = $1 LIMIT 1 [["id", 1]] CACHE (0.0ms) SELECT "tollprojects".* FROM "tollprojects" WHERE "tollprojects"."tollproject_id" = 5 LIMIT 1 CACHE (0.0ms) SELECT "tollprojects".* FROM "tollprojects" WHERE "tollprojects"."id" = $1 LIMIT 1 [["id", 1]] CACHE (0.0ms) SELECT "tollprojects".* FROM "tollprojects" WHERE "tollprojects"."tollproject_id" = 6 LIMIT 1 CACHE (0.0ms) SELECT "tollprojects".* FROM "tollprojects" WHERE "tollprojects"."tollproject_id" = 7 LIMIT 1</p> <p>数据多就很慢，不太明白为何要 一条记录对应一个查询。 是否有其他处理的办法？</p> moyuanming Wed, 22 Oct 2014 18:20:59 +0800 https://ruby-china.org/topics/22196 https://ruby-china.org/topics/22196