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Update star-schema.md

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Denny Crane 2022-07-24 17:10:36 -03:00 committed by GitHub
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11
docs/zh/getting-started/example-datasets/star-schema.md
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@ -15,15 +15,14 @@ $ make
开始生成数据：
!!! warning "注意"
:::warning "注意"
使用`-s 100`dbgen 将生成 6 亿行数据(67GB), 如果使用`-s 1000`它会生成 60 亿行数据(这需要很多时间))
:::
```bash
$ ./dbgen -s 1000 -T c
$ ./dbgen -s 1000 -T l
$ ./dbgen -s 1000 -T p
$ ./dbgen -s 1000 -T s
$ ./dbgen -s 1000 -T d
```
在 ClickHouse 中创建数据表：
@ -106,10 +105,8 @@ $ clickhouse-client --query "INSERT INTO lineorder FORMAT CSV" < lineorder.tbl
SET max_memory_usage = 20000000000;
CREATE TABLE lineorder_flat
ENGINE = MergeTree
PARTITION BY toYear(LO_ORDERDATE)
ORDER BY (LO_ORDERDATE, LO_ORDERKEY) AS
SELECT
ENGINE = MergeTree ORDER BY (LO_ORDERDATE, LO_ORDERKEY)
AS SELECT
l.LO_ORDERKEY AS LO_ORDERKEY,
l.LO_LINENUMBER AS LO_LINENUMBER,
l.LO_CUSTKEY AS LO_CUSTKEY,