I am not getting the correct way putting date in below SOQL statement 

SELECT id, CreatedDate  FROM Sales_Order__c where CreatedDate < 2013-01-11

could some one help please 

Thanks 

error :

INVALID_FIELD:
recordtype__c FROM Sales_Order__c where CreatedDate < 2013-01-11
^
ERROR at Row:1:Column:877
value of filter criterion for field 'CreatedDate' must be of type dateTime and should not be enclosed in quotes

I'm new to development and I've written a trigger to update the Account with a field when a) the field is blank and b) a Contact is created or updated and contains a value in a corresponding field.  The idea being to maintain the data in two places.  However, I'm getting an exception which references "kugadd" which I assume is from the Kugamon package we have installed.  Can anyone help?

Here is my trigger:

trigger OnAccountContactCategory on Contact (before insert, before update) {

    List<Id> AccountsToUpdate = new List<Id>{}; 
    // Find account to update
    for(Contact c: Trigger.new){
        if (c.Categorycontact__c != Null && c.AccountId != Null)  {
              AccountsToUpdate.add(c.AccountId);
        }
        // Pull field data from account
      List<Account> accts = new List<Account>([SELECT Id, Category__c FROM Account WHERE Id IN :AccountsToUpdate]);
        // Update account    
      for(Account a: accts) {
         if (a.Category__c == Null) {
                a.Category__c = c.Categorycontact__c;
              update a;
         }
      }
   }
}

Here is the emailed exception (I removed the IDs themselves):

OnAccountContactCategory: execution of BeforeUpdate

caused by: System.DmlException: Update failed. First exception on row 0 with id [ACCOUNT ID]; first error: CANNOT_INSERT_UPDATE_ACTIVATE_ENTITY, kugadd.AccountAfterInsertAfterUpdate: execution of AfterUpdate

caused by: System.DmlException: Update failed. First exception on row 0 with id [CONTACT ID]; first error: SELF_REFERENCE_FROM_TRIGGER, Object (id = [CONTACT ID]) is currently in trigger OnAccountContactCategory, therefore it cannot recursively update itself: []

(kugadd)
: []

Trigger.OnAccountContactCategory: line 15, column 1

Thoughts?  Thanks!

Need to delete all contact with no case attached to it and created before 12/31/12 How Can i do that non programmatically or programatically

I am not getting the correct way putting date in below SOQL statement 

SELECT id, CreatedDate  FROM Sales_Order__c where CreatedDate < 2013-01-11

could some one help please 

Thanks 

error :

INVALID_FIELD:
recordtype__c FROM Sales_Order__c where CreatedDate < 2013-01-11
^
ERROR at Row:1:Column:877
value of filter criterion for field 'CreatedDate' must be of type dateTime and should not be enclosed in quotes

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Job Applications is a custom object with a lookup relationship to the custom object Positions.

A developer would like to modify the Position fields displayed in the console mini view when a job application record is viewed in the console detail view.

What would a developer customize to accomplish this?

A. The mini page layout of the position page layout

B. The mini page layout on the Job application page layout

C. The related objects on the job application page layout

D. The related objects on the position page layouts