Allow Proper Functionality For Tables Without Auto-Increment PK

lib/arjdbc/teradata/adapter.rb

@@ -137,7 +137,7 @@ def _execute(sql, name = nil)
         end if self.class.lowercase_schema_reflection
         result
       elsif self.class.insert?(sql)
-        (@connection.execute_insert(sql) or last_insert_id(sql)).to_i
+        (@connection.execute_insert(sql) or last_insert_id(_table_name_from_insert(sql))).to_i
       else
         @connection.execute_update(sql)
       end

spec/models/no_autoincrement_pk.rb

@@ -0,0 +1,18 @@
+class CreateNoAutoincrementPks < ActiveRecord::Migration
+  def self.up
+    create_table :no_autoincrement_pks, :id=>false do |t|
+      t.integer :post_id
+      t.string :title
+      t.timestamps
+    end
+  end
+
+  def self.down
+    drop_table :no_autoincrement_pks
+  end
+
+end
+
+class NoAutoincrementPk < ActiveRecord::Base
+  self.primary_key = 'post_id'
+end

spec/no_autoincrement_pk_spec.rb

@@ -0,0 +1,17 @@
+require 'spec_helper'
+require 'models/no_autoincrement_pk'
+
+describe 'NoAutoincrementPkSpec' do
+  it 'should be able to create a record and manually set the post_id' do
+    CreateNoAutoincrementPks.up
+    obj = NoAutoincrementPk.new
+    obj.post_id = 12345
+    obj.title = 'Sample title with 3 or more periods ...'
+    obj.save.should be_true
+    obj.reload
+    obj.id.should eq(12345)
+    found = NoAutoincrementPk.find(12345)
+    found.id.should eq(12345)
+    CreateNoAutoincrementPks.down
+  end
+end