citusdata / citusdata/pg_shard
Support EXPLAIN command
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feature
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- C
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Description
Currently when an `EXPLAIN` is applied to a query, the following output is produced:
```
ERROR: EXPLAIN statements on distributed tables are unsupported
```
This makes it effectively impossible to troubleshoot queries on tables using `pg_shard`. Even something as simple as executing the `EXPLAIN` on candidate worker nodes and combining the results would be sufficient as a replacement for this error.
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