mm6.put(1, b2projplan6);
LOJoin C6 = new LOJoin(lp, mm6, JOINTYPE.HASH, new boolean[] {true, true});
C6.neverUseForRealSetSchema(jcschema6);
lp.add(C6);
lp.connect(A6, C6);
lp.connect(B6, C6);
// Test different different number of join keys
LogicalSchema jaschema8 = new LogicalSchema();
jaschema8.addField(new LogicalSchema.LogicalFieldSchema(
"x", null, DataType.INTEGER));