rails/rails — pull request #6088 by twinturbo (2012-04-30 15:43:31+00:00)
Title: Fix #5990 Against 3-2 Stable

Title says it all. Same thing as #6086, but working against 3-2 stable. This patch also appends the table name if a symbol is given, so `pluck(:id)` will select the id from the correct table when includes/joins are used.