71807ceb5f
I tested the local tvf with tpch queries. First, generate `lineitem` datasets with 6001215 rows, and load it into `lineitem` table by:
```
insert into lineitem select c11, c1, c4, c2, c3, c5, c6, c7, c8, c9, c10, c12, c13, c14, c15, c16
from local(
"file_path" = "tools/tpch-tools/bin/tpch-data/lineitem.tbl.1",
"backend_id" = "10003",
"format" = "csv",
"column_separator" = "|"
);
```
Then, run `q1` and `q16` tpch queries, the query result is correct.
It can also analyze the BE's log directly like:
```
mysql> select * from local(
"file_path" = "log/be.out",
"backend_id" = "10006",
"format" = "csv")
where c1 like "%start_time%" limit 10;
+--------------------------------------------------------+
| c1 |
+--------------------------------------------------------+
| start time: 2023年 08月 07日 星期一 23:20:32 CST |
| start time: 2023年 08月 07日 星期一 23:32:10 CST |
| start time: 2023年 08月 08日 星期二 00:20:50 CST |
| start time: 2023年 08月 08日 星期二 00:29:15 CST |
+--------------------------------------------------------+
```
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