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Merge 3.3 to master #2387

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Merge to v3.3.0
foesa-yang Nov 2, 2022
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highlight on bulk edge where filtering expression (#2306)
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explorer removes dependence on studio (#2311)
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xiajingchun Nov 21, 2022
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2743b36
Remove docker (#2337)
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Br community opts (#2351)
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cdb0bd7
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xiajingchun Nov 24, 2022
deedd9a
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73c2abf
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Original file line number Diff line number Diff line change
Expand Up @@ -80,7 +80,7 @@ NebulaGraph 使用自行开发的 KVStore,而不是其他开源 KVStore,原

- 点数据存储格式

相比 NebulaGraph 2.x 版本,3.x 版本的每个点多了一个不含 TagID 字段并且无 value 的 key,用于支持无 Tag 的点
相比 NebulaGraph 2.x 版本,3.x 版本在开启**无 Tag** 的点配置后,每个点多了一个不含 TagID 字段并且无 value 的 key。

![The vertex format of storage service](https://docs-cdn.nebula-graph.com.cn/figures/3.0-vertex-key.png)

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6 changes: 3 additions & 3 deletions docs-2.0/1.introduction/3.vid.md
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Expand Up @@ -24,9 +24,9 @@

- NebulaGraph 1.x 只支持 VID 类型为`INT64`,从 2.x 开始支持`INT64`和`FIXED_STRING(<N>)`。在`CREATE SPACE`中通过参数`vid_type`可以指定 VID 类型。

- 可以使用`id()`函数,指定或引用该点的 VID
- 可以使用`id()`函数,指定或引用该点的 VID

- 可以使用`LOOKUP`或者`MATCH`语句,来通过属性索引查找对应的 VID;
- 可以使用`LOOKUP`或者`MATCH`语句,来通过属性索引查找对应的 VID

- 性能上,直接通过 VID 找到点的语句性能最高,例如`DELETE xxx WHERE id(xxx) == "player100"`,或者`GO FROM "player100"`等语句。通过属性先查找 VID,再进行图操作的性能会变差,例如`LOOKUP | GO FROM $-.ids`等语句,相比前者多了一次内存或硬盘的随机读(`LOOKUP`)以及一次序列化(`|`)。

Expand All @@ -38,7 +38,7 @@ VID 的生成工作完全交给应用端,有一些通用的建议:

- 通过有唯一性的属性组合来生成 VID,属性访问依赖于属性索引。

- 通过 snowflake 等算法生成 VID,属性访问依赖于属性索引
- 通过 snowflake 等算法生成 VID,属性访问依赖于属性索引

- 如果个别记录的主键特别长,但绝大多数记录的主键都很短的情况,不要将`FIXED_STRING(<N>)`的`N`设置成超大,这会浪费大量内存和硬盘,也会降低性能。此时可通过 BASE64,MD5,hash 编码加拼接的方式来生成。

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Original file line number Diff line number Diff line change
Expand Up @@ -19,12 +19,12 @@

3. 在实例列表中,单击目标实例的**服务实例ID**,或其右侧**操作**列的**详情**。

4. 在**概览**页签的**基本信息**区域,查看**graph_private_ip**及**explorer_portal**信息。
4. 在**概览**页签的**基本信息**区域,查看**nebula_private_ip**及**explorer_portal**信息。

5. 单击**explorer_portal**对应链接,进入 NebulaGraph Explorer 登录页面。
6. 填写登录信息,单击**登录**。

- **Host**:`graph_private_ip地址:9669`,例如`192.168.98.160:9669`。
- **Host**:`nebula_private_ip地址:9669`,例如`192.168.98.160:9669`。
- **用户名**:`root`。
- **密码**:任意密码。

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14 changes: 7 additions & 7 deletions docs-2.0/2.quick-start/6.cheatsheet-for-ngql-command.md
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Expand Up @@ -31,7 +31,7 @@
| bit_and() | 逐位做 AND 操作。 |
| bit_or() | 逐位做 OR 操作。 |
| bit_xor() | 逐位做 XOR 操作。 |
| int size() | 返回列表或映射中元素的数量。 |
| int size() | 返回列表或映射中元素的数量,或字符串的长度。 |
| int range(int start, int end, int step) | 返回`[start,end]`中指定步长的值组成的列表。步长`step`默认为 1。 |
| int sign(double x) | 返回 x 的正负号。 如果 x 为`0`,则返回`0`。 如果 x 为负数,则返回`-1`。 如果 x 为正数,则返回`1`。 |
| double e() | 返回自然对数的底 e(2.718281828459045)。 |
Expand Down Expand Up @@ -61,7 +61,7 @@
| string toLower(string a) | 和`lower()`相同。 |
| string upper(string a) | 返回大写形式的字符串。 |
| string toUpper(string a) | 和`upper()`相同。 |
| int length(string a) | 以字节为单位,返回给定字符串的长度。 |
| int length(a) | 返回给定字符串的长度或路径的长度,单位分别是字节和跳数。 |
| string trim(string a) | 删除字符串头部和尾部的空格。 |
| string ltrim(string a) | 删除字符串头部的空格。 |
| string rtrim(string a) | 删除字符串尾部的空格。 |
Expand All @@ -84,13 +84,13 @@

| 函数 | 说明 |
| :-------------------- | :------------------------------------------ |
| int now() | 根据当前系统返回当前时区的时间戳。 |
| timestamp timestamp() | 根据当前系统返回当前时区的时间戳。 |
| int now() | 根据当前系统返回当前时间戳。 |
| timestamp timestamp() | 根据当前系统返回当前时间戳。 |
| date date() | 根据当前系统返回当前日期(UTC 时间)。 |
| time time() | 根据当前系统返回当前时间(UTC 时间)。 |
| datetime datetime() | 根据当前系统返回当前日期和时间(UTC 时间)。 |

* [Schema 函数](../3.ngql-guide/6.functions-and-expressions/4.schema.md)
* [Schema 相关函数](../3.ngql-guide/6.functions-and-expressions/4.schema.md)

* 原生 nGQL 语句适用

Expand Down Expand Up @@ -186,14 +186,14 @@
| 匹配点 | `(v)` | 用户可以在一对括号中使用自定义变量来表示模式中的点。例如`(v)`。 |
| 匹配 Tag | `MATCH (v:player) RETURN v` | 用户可以在点的右侧用`:<tag_name>`表示模式中的 Tag。 |
| 匹配多 Tag | `MATCH (v:player:team) RETURN v LIMIT 10` | 用户可以用英文冒号(:)匹配多 Tag 的点。 |
| 匹配点的属性 | `MATCH (v:player{name:"Tim Duncan"}) RETURN v` | 用户可以在 Tag 的右侧用`{<prop_name>: <prop_value>}`表示模式中点的属性。 |
| 匹配点的属性 | `MATCH (v:player{name:"Tim Duncan"}) RETURN v` <br><br>`MATCH (v) WITH v, properties(v) as props, keys(properties(v)) as kk LIMIT 10000 WHERE [i in kk where props[i] == "Tim Duncan"] RETURN v` | 用户可以在 Tag 的右侧用`{<prop_name>: <prop_value>}`表示模式中点的属性;或者不指定 Tag 直接匹配点的属性。 |
| 匹配单点 ID | `MATCH (v) WHERE id(v) == 'player101' RETURN v` | 用户可以使用点 ID 去匹配点。`id()`函数可以检索点的 ID。 |
| 匹配多点 ID | `MATCH (v:player { name: 'Tim Duncan' })--(v2) WHERE id(v2) IN ["player101", "player102"] RETURN v2` | 要匹配多个点的 ID,可以用`WHERE id(v) IN [vid_list]`。 |
| 匹配连接的点 | `MATCH (v:player{name:"Tim Duncan"})--(v2) RETURN v2.player.name AS Name` | 用户可以使用`--`符号表示两个方向的边,并匹配这些边连接的点。用户可以在`--`符号上增加`<`或`>`符号指定边的方向。 |
| 匹配路径 | `MATCH p=(v:player{name:"Tim Duncan"})-->(v2) RETURN p` | 连接起来的点和边构成了路径。用户可以使用自定义变量命名路径。 |
| 匹配边 | `MATCH (v:player{name:"Tim Duncan"})-[e]-(v2) RETURN e`<br>`MATCH ()<-[e]-() RETURN e LIMIT 3` | 除了用`--`、`-->`、`<--`表示未命名的边之外,用户还可以在方括号中使用自定义变量命名边。例如`-[e]-`。 |
| 匹配 Edge type | `MATCH ()-[e:follow]->() RETURN e LIMIT 5` | 和点一样,用户可以用`:<edge_type>`表示模式中的 Edge type,例如`-[e:follow]-`。 |
| 匹配边的属性 | ` MATCH (v:player{name:"Tim Duncan"})-[e:follow{degree:95}]->(v2) RETURN e` | 用户可以用`{<prop_name>: <prop_value>}`表示模式中 Edge type 的属性,例如`[e:follow{likeness:95}]`。 |
| 匹配边的属性 | ` MATCH (v:player{name:"Tim Duncan"})-[e:follow{degree:95}]->(v2) RETURN e` <br><br>`MATCH ()-[e]->() WITH e, properties(e) as props, keys(properties(e)) as kk LIMIT 10000 WHERE [i in kk where props[i] == 90] RETURN e`| 用户可以用`{<prop_name>: <prop_value>}`表示模式中 Edge type 的属性,例如`[e:follow{likeness:95}]`;或者不指定 Edge type 直接匹配边的属性。 |
| 匹配多个 Edge type | `MATCH (v:player{name:"Tim Duncan"})-[e:follow | :serve]->(v2) RETURN e` | 使用`|`可以匹配多个 Edge type,例如`[e:follow | :serve]`。第一个 Edge type 前的英文冒号(:)不可省略,后续 Edge type 前的英文冒号可以省略,例如`[e:follow | serve]`。 |
| 匹配多条边 | `MATCH (v:player{name:"Tim Duncan"})-[]->(v2)<-[e:serve]-(v3) RETURN v2, v3` | 用户可以扩展模式,匹配路径中的多条边。 |
| 匹配定长路径 | `MATCH p=(v:player{name:"Tim Duncan"})-[e:follow*2]->(v2) RETURN DISTINCT v2 AS Friends` | 用户可以在模式中使用`:<edge_type>*<hop>`匹配定长路径。`hop`必须是一个非负整数。`e`的数据类型是列表。 |
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6 changes: 3 additions & 3 deletions docs-2.0/20.appendix/0.FAQ.md
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Expand Up @@ -389,9 +389,9 @@ NebulaGraph {{ nebula.release }} 未提供运维命令以实现自动扩缩容

|服务类型|端口|
|-|-|
|Meta|9559, 9560, 19559, 19560|
|Graph|9669, 19669, 19670|
|Storage|9777 ~ 9780, 19779, 19780|
|Meta|9559, 9560, 19559|
|Graph|9669, 19669|
|Storage|9777 ~ 9780, 19779|

如果修改过配置文件中预设的端口,请找出实际使用的端口并在防火墙中开放它们。

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11 changes: 11 additions & 0 deletions docs-2.0/20.appendix/6.eco-tool-version.md
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Expand Up @@ -154,6 +154,17 @@ Docker Compose 可以快速部署 NebulaGraph 集群。如何使用请参见 [Do
|:---|:---|
| {{ nebula.tag }} | {{br.tag}}|

{{ent.ent_begin}}
## Backup & Restore (企业版)

[Backup&Restore](../backup-and-restore/nebula-br-ent/1.br-ent-overview.md) 企业版是一款命令行界面(CLI)工具。通过 NebulaGraph BR(企业版),用户可以备份 NebulaGraph 企业版数据,并基于备份目录进行数据恢复。

|NebulaGraph 版本|BR 版本|
|:---|:---|
| {{ nebula.tag }} | {{br_ent.tag}}|

{{ent.ent_end}}

## NebulaGraph Bench

[NebulaGraph Bench](https://github.com/vesoft-inc/nebula-bench/releases/tag/{{bench.tag}}) 用于测试 NebulaGraph 的基线性能数据,使用 LDBC v0.3.3 的标准数据集。
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