Elssky commented on issue #614:
URL:
https://github.com/apache/incubator-graphar/issues/614#issuecomment-2325788250
## Neo4j Cypher statements involving tags can be mainly divided into the
following categories:
### 1. **Creation**
- **Create nodes with labels**：
```cypher
CREATE (n:Label {property: value})
```
- **Add a label to existing nodes**：
```cypher
MATCH (n) SET n:NewLabel
```
### 2. **Deletion and Renaming**
- **Remove all labels from nodes**：
```cypher
MATCH (n) REMOVE LABELS(n)
```
- **Rename a label (by adding a new label and removing the old one)**：
```cypher
MATCH (n:OldLabel) SET n:NewLabel REMOVE n:OldLabel
```
### 3. **Querying and Filtering**
- **Query nodes with a specific label**：
```cypher
MATCH (n:Label) RETURN n
```
- **Query nodes with multiple labels**：
```cypher
MATCH (n:Label1:Label2) RETURN n
```
- **Query nodes with a specific label and property**：
```cypher
MATCH (n:Label {property: value}) RETURN n
```
- **Check if a node has a specific label**：
```cypher
MATCH (n) WHERE n:Label RETURN n
```
### 4. **Statistics and Information**
- **Count the number of nodes with a specific label**：
```cypher
MATCH (n:Label) RETURN COUNT(n)
```
- **Query all labels**：
```cypher
CALL db.labels() YIELD label RETURN label
```
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