Check for constants in primary key.

paste.txt

$ clickhouse-client 
ClickHouse client version 0.0.53720.
Connecting to localhost:9000.
Connected to ClickHouse server version 1.1.53981.

:) create table hoba (naber Date) ENGINE = MergeTree(naber, (1, naber), 8192)

CREATE TABLE hoba
(
    naber Date
) ENGINE = MergeTree(naber, (1, naber), 8192)

Received exception from server:
Code: 44. DB::Exception: Received from localhost:9000, 127.0.0.1. DB::Exception: Primary key cannot contain constants. 

0 rows in set. Elapsed: 0.052 sec. 

:) create table hoba (naber Date) ENGINE = MergeTree(naber, (naber, naber + 1), 8192)

CREATE TABLE hoba
(
    naber Date
) ENGINE = MergeTree(naber, (naber, naber + 1), 8192)

Ok.

0 rows in set. Elapsed: 0.003 sec. 

:)