[GitHub] [age] markgomer opened a new issue, #866: Function age_create_barbell_graph doesn't behave properly when called more than once.

[via GitHub]

markgomer opened a new issue, #866:
URL: https://github.com/apache/age/issues/866

   **Describe the bug**
   When called more than once, the created complete graphs doesn't connect as a 
Barbell graph, according to the following figure:
   
   
![image](https://user-images.githubusercontent.com/57829631/234885950-bc6e8e4d-1eab-4f0e-ba10-8537f402cf75.png)
   
   **How are you accessing AGE (Command line, driver, etc.)?**
   - Accessing AGE through `psql` interface and age-viewer.
   
   
   **What is the command that caused the error?**
   
   Just calling the function twice exposes the bug:
   
   ```pgsql
   SELECT age_create_barbell_graph('barbell',5,0,'vlabel','{}','elabel','{}');
   SELECT age_create_barbell_graph('barbell',7,0,'vlabel','{}','elabel','{}');
   ```
   
   **Expected behavior**
   Each call of the function should create two complete graphs connected with a 
bridge between them. [For 
reference](https://en.wikipedia.org/wiki/Barbell_graph).
   
   **Environment:**
   - Version: [PostgreSQL 11.19] [Apache AGE 1.2.0] 


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