mirror of
https://github.com/ClickHouse/ClickHouse.git
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87 lines
3.0 KiB
ReStructuredText
87 lines
3.0 KiB
ReStructuredText
Star Schema
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===========
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Compile dbgen: https://github.com/vadimtk/ssb-dbgen
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.. code-block:: bash
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git clone git@github.com:vadimtk/ssb-dbgen.git
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cd ssb-dbgen
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make
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You will see some warnings. It's Ok.
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Place ``dbgen`` and ``dists.dss`` to some place with at least 800 GB free space available.
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Generate data:
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.. code-block:: bash
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./dbgen -s 1000 -T c
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./dbgen -s 1000 -T l
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Create tables in ClickHouse:
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.. code-block:: sql
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CREATE TABLE lineorder (
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LO_ORDERKEY UInt32,
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LO_LINENUMBER UInt8,
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LO_CUSTKEY UInt32,
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LO_PARTKEY UInt32,
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LO_SUPPKEY UInt32,
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LO_ORDERDATE Date,
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LO_ORDERPRIORITY String,
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LO_SHIPPRIORITY UInt8,
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LO_QUANTITY UInt8,
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LO_EXTENDEDPRICE UInt32,
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LO_ORDTOTALPRICE UInt32,
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LO_DISCOUNT UInt8,
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LO_REVENUE UInt32,
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LO_SUPPLYCOST UInt32,
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LO_TAX UInt8,
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LO_COMMITDATE Date,
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LO_SHIPMODE String
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) Engine = MergeTree(LO_ORDERDATE,(LO_ORDERKEY,LO_LINENUMBER,LO_ORDERDATE),8192);
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CREATE TABLE customer (
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C_CUSTKEY UInt32,
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C_NAME String,
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C_ADDRESS String,
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C_CITY String,
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C_NATION String,
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C_REGION String,
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C_PHONE String,
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C_MKTSEGMENT String,
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C_FAKEDATE Date
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) Engine = MergeTree(C_FAKEDATE,(C_CUSTKEY,C_FAKEDATE),8192);
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CREATE TABLE part (
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P_PARTKEY UInt32,
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P_NAME String,
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P_MFGR String,
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P_CATEGORY String,
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P_BRAND String,
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P_COLOR String,
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P_TYPE String,
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P_SIZE UInt8,
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P_CONTAINER String,
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P_FAKEDATE Date
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) Engine = MergeTree(P_FAKEDATE,(P_PARTKEY,P_FAKEDATE),8192);
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CREATE TABLE lineorderd AS lineorder ENGINE = Distributed(perftest_3shards_1replicas, default, lineorder, rand());
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CREATE TABLE customerd AS customer ENGINE = Distributed(perftest_3shards_1replicas, default, customer, rand());
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CREATE TABLE partd AS part ENGINE = Distributed(perftest_3shards_1replicas, default, part, rand());
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For single-node setup, create just MergeTree tables.
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For Distributed setup, you must configure cluster ``perftest_3shards_1replicas`` in configuration file.
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Then create MergeTree tables on each node and then create Distributed tables.
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Load data (change customer to customerd in case of distributed setup):
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.. code-block:: bash
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cat customer.tbl | sed 's/$/2000-01-01/' | clickhouse-client --query "INSERT INTO customer FORMAT CSV"
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cat lineorder.tbl | clickhouse-client --query "INSERT INTO lineorder FORMAT CSV"
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