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require 'helper'
module Arel
module Visitors
describe 'the ibm_db visitor' do
before do
@visitor = IBM_DB.new Table.engine
end
it 'uses FETCH FIRST n ROWS to limit results' do
stmt = Nodes::SelectStatement.new
stmt.limit = Nodes::Limit.new(1)
sql = @visitor.accept(stmt)
sql.must_be_like "SELECT FETCH FIRST 1 ROWS ONLY"
end
it 'uses FETCH FIRST n ROWS in updates with a limit' do
stmt = Nodes::UpdateStatement.new
stmt.limit = Nodes::Limit.new(1)
stmt.key = 'id'
sql = @visitor.accept(stmt)
sql.must_be_like "UPDATE NULL WHERE 'id' IN (SELECT 'id' FETCH FIRST 1 ROWS ONLY)"
end
end
end
end
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