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Yorick Peterse
d769596aec
This class can be used to join multiple AcitveRecord::Relation objects together using a SQL UNION statement. ActiveRecord < 5.0 sadly doesn't support UNION and existing Gems out there don't handle prepared statements (e.g. they never incremented the variable bindings).
17 lines
458 B
Ruby
17 lines
458 B
Ruby
require 'spec_helper'
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describe Gitlab::SQL::Union do
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describe '#to_sql' do
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it 'returns a String joining relations together using a UNION' do
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rel1 = User.where(email: 'alice@example.com')
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rel2 = User.where(email: 'bob@example.com')
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union = described_class.new([rel1, rel2])
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sql1 = rel1.reorder(nil).to_sql
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sql2 = rel2.reorder(nil).to_sql
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expect(union.to_sql).to eq("(#{sql1}) UNION (#{sql2})")
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end
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end
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end
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