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doris/regression-test/data/external_table_p2
daidai f1db6bd8c1 [feature](hive)append support for struct and map column type on textfile format of hive table (#22347)
1. append support for struct and map column type on textfile format  of hive table.
2. optimizer code that array column type.

```mysql
+------+------------------------------------+
| id   | perf                               |
+------+------------------------------------+
| 1    | {"key1":"value1", "key2":"value2"} |
| 1    | {"key1":"value1", "key2":"value2"} |
| 2    | {"name":"John", "age":"30"}        |
+------+------------------------------------+
```

```mysql
+---------+------------------+
| column1 | column2          |
+---------+------------------+
|       1 | {10, "data1", 1} |
|       2 | {20, "data2", 0} |
|       3 | {30, "data3", 1} |
+---------+------------------+
```
Summarizes support for complex types(support assign delimiter) :

1. array< primitive_type > and array< array< ... > >
2. map< primitive_type , primitive_type >
3. Struct< primitive_type , primitive_type ... >
2023-08-10 13:47:58 +08:00
..