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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/01/15 08:23:25 UTC
[GitHub] [arrow-datafusion] xudong963 commented on pull request #1566: fix: sql planner creates cross join instead of inner join from select predicates
xudong963 commented on pull request #1566:
URL: https://github.com/apache/arrow-datafusion/pull/1566#issuecomment-1013642299
```
❯ create table part as select 1 as p_partkey;
0 rows in set. Query took 0.003 seconds.
❯ create table lineitem as select 1 as l_partkey, 2 as l_suppkey;
0 rows in set. Query took 0.005 seconds.
❯ create table supplier as select 1 as s_suppkey;
0 rows in set. Query took 0.002 seconds.
❯ explain select * from part, supplier, lineitem where p_partkey = l_partkey and s_suppkey = l_suppkey;
+---------------+----------------------------------------------------------------------------------------------------------------------------------------------------+
| plan_type | plan |
+---------------+----------------------------------------------------------------------------------------------------------------------------------------------------+
| logical_plan | Projection: #part.p_partkey, #lineitem.l_partkey, #lineitem.l_suppkey, #supplier.s_suppkey |
| | Join: #lineitem.l_suppkey = #supplier.s_suppkey |
| | Join: #part.p_partkey = #lineitem.l_partkey |
| | TableScan: part projection=Some([0]) |
| | TableScan: lineitem projection=Some([0, 1]) |
| | TableScan: supplier projection=Some([0]) |
```
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