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Created topic: Nebula Graph CRUD #163

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merged 11 commits into from
Oct 27, 2020
Merged

Created topic: Nebula Graph CRUD #163

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Created topic: Nebula Graph CRUD
randomJoe211 Oct 13, 2020
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Update 4.nebua-graph-crud.md
randomJoe211 Oct 16, 2020
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Update 4.nebua-graph-crud.md
randomJoe211 Oct 21, 2020
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Added the deletion part and fixed a few issues
randomJoe211 Oct 23, 2020
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randomJoe211 Oct 23, 2020
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minor optimization
randomJoe211 Oct 23, 2020
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Fixed some issues.
randomJoe211 Oct 27, 2020
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Update 4.nebua-graph-crud.md
randomJoe211 Oct 27, 2020
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Update 4.nebua-graph-crud.md
randomJoe211 Oct 27, 2020
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Update 4.nebua-graph-crud.md
randomJoe211 Oct 27, 2020
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randomJoe211 Oct 27, 2020
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28 changes: 14 additions & 14 deletions docs_2.0/manual_EN/3.quick-start/4.nebua-graph-crud.md
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Original file line number Diff line number Diff line change
Expand Up @@ -121,8 +121,8 @@ From the **Status** column of the table in the return message, you can see that
### nGQL syntax

```nGQL
CREATE {TAG | EDGE} {<tag_name> | <edge_type>}(<property_name_1> <data_type>
[, <property_name_2> <data_type> ...]);
CREATE {TAG | EDGE} {<tag_name> | <edge_type>}(<property_name> <data_type>
[, <property_name> <data_type> ...]);
```

### Examples
Expand Down Expand Up @@ -167,20 +167,20 @@ You can use the `INSERT` statement to insert vertices or edges based on existing
* Insert vertices:

```nGQL
INSERT VERTEX <tag> (<property_name_1>[, <property_name_2>...])
[, <tag> (<property_name_3>[, <property_name_4>...]), ...]
{VALUES | VALUE} <vid>: (<property_value_1>[, <property_value_2>...])
[, <vid>: (<property_value_3>[, <property_value_4>...];
INSERT VERTEX <tag> (<property_name>[, <property_name>...])
[, <tag> (<property_name>[, <property_name>...]), ...]
{VALUES | VALUE} <vid>: (<property_value>[, <property_value>...])
[, <vid>: (<property_value>[, <property_value>...];
```

`VID` is short for vertex ID. It must be a unique string value in a graph space.

* Insert edges:

```nGQL
INSERT EDGE <edge type> (<property_name_1>[, <property_name_2>...])
{VALUES | VALUE} <source_vid> -> <destination_vid>[@<rank>] : (<property_value_1>[, <property_value_2>...])
[, <source_vid> -> <destination_vid>[@<rank> : (<property_name_1>[, <property_name_2>...]), ...]
INSERT EDGE <edge type> (<property_name>[, <property_name>...])
{VALUES | VALUE} <src_vid> -> <dst_vid>[@<rank>] : (<property_value>[, <property_value>...])
[, <src_vid> -> <dst_vid>[@<rank> : (<property_name>[, <property_name>...]), ...]
```

### Examples
Expand Down Expand Up @@ -264,8 +264,8 @@ You can use the statements [GO](TODO) [TODO], [FETCH](TODO) [TODO], and [LOOKUP]
* Fetch properties on edges:

```nGQL
FETCH PROP ON <edge_type> <source_vid> -> <target_vid>[@<rank>]
[, <source_vid> -> <target_vid> ...]
FETCH PROP ON <edge_type> <src_vid> -> <dst_vid>[@<rank>]
[, <src_vid> -> <dst_vid> ...]
[YIELD [DISTINCT] <return_list>]
```

Expand Down Expand Up @@ -311,7 +311,7 @@ You can use the statements [GO](TODO) [TODO], [FETCH](TODO) [TODO], and [LOOKUP]
|`$$`|Represents the target vertex.|
|`\`|A line-breaker.|

* Use `GO`: Search for the team served by the players who are followed by the player with VID player100. We can use a pipe or a temporary variable in the statement to combine queries.
* Use `GO`: Search for the team served by the players who are followed by the player with VID "player100". We can use a pipe or a temporary variable in the statement to combine queries.

* With a pipe:

Expand Down Expand Up @@ -462,8 +462,8 @@ DELETE VERTEX <vid1>[, <vid2>...]
* Delete edges:

```nGQL
DELETE EDGE <edge_type> <source_vid> -> <destination_vid>[@<rank>]
[, <source_vid> -> <destination_vid>...]
DELETE EDGE <edge_type> <src_vid> -> <dst_vid>[@<rank>]
[, <src_vid> -> <dst_vid>...]
```

### Examples
Expand Down