**Describe the bug**
Under certain conditions the equals comparison between String and Date yields the wrong result. Range Comparisons with greather-than-equals returns the correct result set.

**How to reproduce**
* Which ClickHouse server version to use: 21.2.5.5 (latest at the time of this issue)
* Which interface to use, if matters: HTTP (but should not matter)

```sql
CREATE TABLE default.myTable (
	myDay Date,
	myOrder Int32,
	someData String
) 
ENGINE = ReplacingMergeTree
PARTITION BY floor(toYYYYMMDD(myDay), -1)
ORDER BY (myOrder)
;

INSERT INTO default.myTable (myDay, myOrder) VALUES ('2021-01-01', 1);
INSERT INTO default.myTable (myDay, myOrder) VALUES ('2021-01-02', 2); // This row should be returned
INSERT INTO default.myTable (myDay, myOrder) VALUES ('2021-01-03', 3);

SELECT * FROM default.myTable mt
WHERE myDay = '2021-01-02';
```

**Expected behavior**
The last query in the example should yield the marked row. Instead it returns a empty result set.

There must be a connection to the used `PARTITION KEY`. The issue fails to reproduce as soon as I do any changes to the `PARTITION KEY` setting.

{
            if (value.getType() != Field::Types::String)
                return false;
            String prefix = value.get<const String &>();
            if (prefix.empty())
                return false;
            String right_bound = firstStringThatIsGreaterThanAllStringsWithPrefix(prefix);
            out.function = RPNElement::FUNCTION_IN_RANGE;
            out.range = !right_bound.empty()
                ? Range(prefix, true, right_bound, false)
                : Range::createLeftBounded(prefix, true);
            return true;
        }
    }
};
static const std::map<std::string, std::string> inverse_relations = {
        {"equals", "notEquals"},
        {"notEquals", "equals"},
        {"less", "greaterOrEquals"},
        {"greaterOrEquals", "less"},
        {"greater", "lessOrEquals"},
        {"lessOrEquals", "greater"},
        {"in", "notIn"},
        {"notIn", "in"},
        {"like", "notLike"},
        {"notLike", "like"},
        {"empty", "notEmpty"},
        {"notEmpty", "empty"},
};
bool isLogicalOperator(const String & func_name)