Data update syntax

Syntax

You can use Gremlin syntax to add, update, or delete node and edge data. When you add or update a node or an edge, you must specify all of its properties. To delete a node or an edge, you must specify its unique identifier.

• Add a node

Format:

g("graph_name").addV("node_type").property("pkey", "node_id").property("property_name", "property_value")

References

g("tinkerpop").addV("person").property("pkey","11").property("name","Durant").property("age","34")

Note: The pkey property name cannot be changed. It represents the unique key of the node.

• Update a node

Format:

g("graph_name").addV("node_type").property("pkey","node_ID").property("property_name","property_value")

Related information

g("tinkerpop").addV("person").property("pkey","11").property("name","Durant1").property("age","345")

Note: The pkey property name cannot be changed. It represents the unique key of the node.

• Adding edge information

Format:

g("graph_name").addE("edge_type").property("pkey","source_node_ID").property("skey","destination_node_ID").property("property_name","property_value")

References

g("tinkerpop").addE("relation").property("pkey","11").property("skey","11").property("name","Durant")

.property("age","34")

Note: The pkey and skey property names cannot be changed.

• Update an edge

Format:

g("graph_name").addE("edge_type").property("pkey","source_node_ID").property("skey","destination_node_ID").property("property_name","property_value")

References

g("tinkerpop").addE("relation").property("pkey","11").property("skey","11").property("name","Durant123")

.property("age","345")

Note: The pkey and skey property names cannot be changed.

• Delete a node

Format:

g("specify_graph_name").V("specify_node_id").hasLabel("specify_node_type").drop()

References

g("your_graph_name").V("pk_value").hasLabel("your_label").drop()

• Delete an edge

Format:

g("graph_name").E("edge_ID_value").hasLabel("edge_type").drop()

References

g("graph_name").E("pk1").hasLabel("label").drop()

Notes

For more information, see Notes.