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add schema function #1302

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Dec 8, 2021
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add schema function #1302

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a4323f1
add schema function
cooper-lzy Dec 6, 2021
d622e40
Update docs-2.0/3.ngql-guide/6.functions-and-expressions/4.schema.md
abby-cyber Dec 7, 2021
51f940c
Update 4.schema.md
abby-cyber Dec 7, 2021
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9 changes: 9 additions & 0 deletions docs-2.0/3.ngql-guide/6.functions-and-expressions/4.schema.md
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Expand Up @@ -19,6 +19,15 @@ Nebula Graph 支持以下 Schema 函数。
|src(edge)|返回边的起始点 ID。数据类型和点 ID 的类型保持一致。|
|dst(edge)|返回边的目的点 ID。数据类型和点 ID 的类型保持一致。|
|int rank(edge) | 返回边的 rank。|
|vertex | 返回点的信息。包括点 ID、Tag、属性和值。|
|edge | 返回边的信息。包括 Edge type、起始点 ID、目的点 ID、rank、属性和值。|
|vertices | 返回子图中的点的信息。详情参见[GET SUBGRAPH](../16.subgraph-and-path/1.get-subgraph.md)。|
|edges | 返回子图中的边的信息。详情参见[GET SUBGRAPH](../16.subgraph-and-path/1.get-subgraph.md)。|
|path | 返回路径信息。详情参见[FIND PATH](../16.subgraph-and-path/2.find-path.md)。|

!!! note

由于 vertex、edge、vertices、edges、path 属于关键字，使用时需要用`AS <alias>`设置别名才能正常使用。例如`GO FROM "player100" OVER follow YIELD edge AS e;`。

## openCypher 兼容语句适用

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