Home/ Questions/Q 867875
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-15T10:02:47+00:00

When we use ActiveRecord, we can use: User.find(:first, :conditions=>[name=?, name]) It looks like ActiveRecord

  • 0

When we use ActiveRecord, we can use:

User.find(:first, :conditions=>["name=?", name])

It looks like ActiveRecord are using ‘prepared statement’, but after looking into the code, I found ActiveRecord just use String.dup and connection.quote() to adjust the content to build a sql, not like Java.

So, there is no real prepared statment in raiils? And why rails doesn’t provide it?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    If by prepared statement you mean a piece of SQL that is held in a compiled form for more efficient execution, then you’re correct: it’s not something implemented in Rails. There are several reasons for this:

    1. Rails is the web framework – it doesn’t know or care about databases. By default, Rails uses
      • ActiveRecord for object-relational mapping. You can change this if you want to – it doesn’t have to be a RDBMS even.
      • ActiveRecord doesn’t know about specific database platforms. For that it relies on “adapters”, which translate AR’s requirements into platform-specific SQL.
      • Some RDBMSs that have AR adapters support prepared statements (or equivalent) but others don’t.
    • 0