Why following query reports the confused errors?

[yixinglu]

General Question

Branch: master

GO 2 STEPS FROM 'Tim Duncan' OVER like WHERE $$.player.age > 20 Yield $$.player.name

error log:

E20220412 16:25:21.904093 98909 Optimizer.cpp:48] Failed to postprocess plan: EdgeName `*'  is nonexistent

What's the meaning of EdgeName *? This error was reported in Optimizer:

  auto status2 = postprocess(const_cast<PlanNode *>(newRoot), qctx, spaceID);
  if (!status2.ok()) {
    LOG(ERROR) << "Failed to postprocess plan: " << status2;
  }

[jievince]

The error is reported when trying to get the edge type of the given edge name.
And the EdgeName * is a special symbol that is widely used in our implementation for ngql.
You can search "*" in our code:

This error reported for ngql could be ignored because it's designed for the property pruner rule which will only affect MATCH statement.