Check out example codes for "impala insert multiple rows". It will help you in understanding the concepts better.

Code Example 1

[localhost:21000] > describe val_example;
Query: describe val_example
Query finished, fetching results ...
+-------+---------+---------+
| name  | type    | comment |
+-------+---------+---------+
| id    | int     |         |
| col_1 | boolean |         |
| col_2 | double  |         |
+-------+---------+---------+

[localhost:21000] > insert into val_example values (1,true,100.0);
Inserted 1 rows in 0.30s
[localhost:21000] > select * from val_example;
+----+-------+-------+
| id | col_1 | col_2 |
+----+-------+-------+
| 1  | true  | 100   |
+----+-------+-------+

[localhost:21000] > insert overwrite val_example values (10,false,pow(2,5)), (50,true,10/3);
Inserted 2 rows in 0.16s
[localhost:21000] > select * from val_example;
+----+-------+-------------------+
| id | col_1 | col_2             |
+----+-------+-------------------+
| 10 | false | 32                |
| 50 | true  | 3.333333333333333 |
+----+-------+-------------------+

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