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Contents
require 'cases/helper_sqlserver'
require 'models/car'
class ShowplanTestSQLServer < ActiveRecord::TestCase
fixtures :cars
describe 'Unprepare previously prepared SQL' do
it 'from simple statement' do
plan = Car.where(id: 1).explain
plan.must_include "SELECT [cars].* FROM [cars] WHERE [cars].[id] = 1"
plan.must_include "Clustered Index Seek", 'make sure we do not showplan the sp_executesql'
end
it 'from multiline statement' do
plan = Car.where("\n id = 1 \n").explain
plan.must_include "SELECT [cars].* FROM [cars] WHERE (\n id = 1 \n)"
plan.must_include "Clustered Index Seek", 'make sure we do not showplan the sp_executesql'
end
it 'from prepared statement' do
plan = Car.where(name: ',').limit(1).explain
plan.must_include " SELECT [cars].* FROM [cars] WHERE [cars].[name]"
plan.must_include "TOP EXPRESSION", 'make sure we do not showplan the sp_executesql'
plan.must_include "Clustered Index Scan", 'make sure we do not showplan the sp_executesql'
end
end
describe 'With SHOWPLAN_TEXT option' do
it 'use simple table printer' do
with_showplan_option('SHOWPLAN_TEXT') do
plan = Car.where(id: 1).explain
plan.must_include "SELECT [cars].* FROM [cars] WHERE [cars].[id]"
plan.must_include "Clustered Index Seek", 'make sure we do not showplan the sp_executesql'
end
end
end
describe 'With SHOWPLAN_XML option' do
it 'show formatted xml' do
with_showplan_option('SHOWPLAN_XML') do
plan = Car.where(id: 1).explain
plan.must_include 'ShowPlanXML'
end
end
end
private
def with_showplan_option(option)
old_option = ActiveRecord::ConnectionAdapters::SQLServerAdapter.showplan_option
ActiveRecord::ConnectionAdapters::SQLServerAdapter.showplan_option = option
yield
ensure
ActiveRecord::ConnectionAdapters::SQLServerAdapter.showplan_option = old_option
end
end
Version data entries
19 entries across 19 versions & 2 rubygems