Query Multiple tables

Rails
1

Hi,

select * from table1 inner join table2 on table1.foreign_key =
table2.foreign_key

select * from table1 inner join table2 on table1.foreign_key =
table2.foreign_key join table3 on table2.foreign_key=table3.foreign_key

These are the SQL commands, I need to apply it in Rails. Kindly tell me
the
syntax in Rails to apply these SQL commands instead of sql_query.

–
With Regards
Palani Kannan. K.

2

On Sep 13, 11:59 am, PalaniKannan K [email protected] wrote:

Take a look at the :joins option to find (or the joins scope
modifiying thing in rails 3)

Fred

3

On Sep 13, 6:10 am, Frederick C. [email protected]
wrote:

Take a look at the :joins option to find (or the joins scope
modifiying thing in rails 3)

Fred

I think has_many :through might also be what you’re looking for. You
can avoid writing SQL 99% of the time if you learn how to use the
various flavors of ActiveRecord associations.

Jeff

4

On 13 September 2010 19:54, Jeff [email protected] wrote:

I think has_many :through might also be what you’re looking for. You
can avoid writing SQL 99% of the time if you learn how to use the
various flavors of ActiveRecord associations.

Dear Jeff,
In model I can apply has_many and belongs_to option. How I can apply
those
tables in Controller and View… I am new bee… I tried with some
tutorials, every tutorial i m getting instructions to use has_many and
belongs_to in model. I am getting problem with controllers and view to
use
“find” with foreign_keys if I use those options in model.

Jeff

–
With Regards
Palani Kannan. K