// C = join
LogicalSchema jcschema5 = new LogicalSchema();
jcschema5.addField(new LogicalSchema.LogicalFieldSchema(
"x", null, DataType.INTEGER));
jcschema5.addField(new LogicalSchema.LogicalFieldSchema(
"y", null, DataType.INTEGER));
LogicalExpressionPlan aprojplan5 = new LogicalExpressionPlan();
new ProjectExpression(aprojplan5, DataType.INTEGER, 0, 0);
LogicalExpressionPlan bprojplan5 = new LogicalExpressionPlan();
new ProjectExpression(bprojplan5, DataType.INTEGER, 1, 0);