[Bug] SelectNode.cardinality < 0 cause query exception "Unexpected exception: null"

Describe the bug When using select condition like -1=-1 may cause errCode = 2, detailMessage = Unexpected exception: null. This is due toSelectNode.cardinality computing error.

https://github.com/apache/incubator-doris/blob/81aa1c599def3c3f0d9cd80469fd06393ea764e7/fe/src/main/java/org/apache/doris/planner/SelectNode.java#L63-L73

This cardinality may be less than 0.

To Reproduce Steps to reproduce the behavior:

1. Create a table

CREATE TABLE `table1` (
  `city_id` bigint(20) NULL,
  `tag_id` bigint(20) NULL,
  `dt` bigint(20) NULL,
  `num` bigint(20) NULL
) ENGINE=OLAP
DUPLICATE KEY(`city_id`, `tag_id`, `dt`)
COMMENT "OLAP"
PARTITION BY RANGE(`dt`)
(PARTITION p20200102 VALUES [("20200101"), ("20200102")),
PARTITION p20200103 VALUES [("20200102"), ("20200103")))
DISTRIBUTED BY HASH(`city_id`) BUCKETS 5
PROPERTIES (
"replication_num" = "1",
"in_memory" = "false",
"storage_format" = "DEFAULT"
);

1. Insert some data

INSERT INTO table1 VALUES (1, 2, 20200102, 3);

You may need to wait for the cardinality to be > 0 (I still dont know how the cardinality works).

1. Launch a query

SELECT rank, tag_id
FROM (
    SELECT row_number() OVER (ORDER BY num DESC) AS rank, tag_id
    FROM table1
    ) t
WHERE -1=-1 or tag_id in (-1)
LIMIT 10
;

When the table is not empty (maybe cardinality means row number?), cardinality will be > 0, computeSelectivity() < 0, then the error occur.

I tried to remove some elements and this is the minimum sql to reproduce the bug.

Could someone explain what doe cardinality and selectivity means? Is Preconditions.checkState(cardinality >= 0); necessary?

[ccoffline]

-1=-1 or other True expr will turn into a BoolLiteral which selectivity = -1. tag_id in (-1) will turn into a InPredicate which selectivity = 0.1. So in their father node CompoundPredicate, selectivity will be set to -1.

https://github.com/apache/incubator-doris/blob/81aa1c599def3c3f0d9cd80469fd06393ea764e7/fe/src/main/java/org/apache/doris/analysis/CompoundPredicate.java#L106-L115

If remove any of these expresstions, SelectNode.computeStats will not be executed.

[liutang123]

Give your PR linked this issue please.