| Table | Description |
|---|---|
| vertices | Each row represents a vertex of the graph. |
| edges | Each row represents an edge of the graph. |
| sources | [Optional] Specifies source vertices. Legacy table, formerly required for directed graph. Function ignores this table and treats all graphs as undirected. |
vertices Schema
| Column | Data Type | Description |
|---|---|---|
| vertex_key_column | Any allowed in PARTITION BY clause | [Column appears once for each specified vertex_key_column.] All or part of unique vertex key. Cannot be NULL. |
| accumulate_column | Any | [Column appears once for each specified accumulate_column.] Column to copy to community vertices table. |
edges Schema
| Column | Data Type | Description |
|---|---|---|
| source_vertex_key_column | Any allowed in PARTITION BY clause | Column appears once for each specified source_vertex_key_column.] All or part of key that identifies source vertex of edge. Must be a vertex_key_column in vertices table. Cannot be NULL. |
| target_key_column | Same as source_vertex_key_column | Column appears once for each specified target_key_column.] All or part of key that identifies target vertex of edge. Must be a vertex_key_column in vertices table. Can be NULL. |
| edge_weight | SMALLINT, INTEGER, or NUMERIC | [Required only for weighted graph.] Edge weight, a positive value. Can be NULL. |
sources Schema
| Column | Data Type | Description |
|---|---|---|
| source_vertex_key_column | Same as corresponding vertex_key_column in vertices table | Column appears once for each specified source_vertex_key_column.] All or part of key that identifies source vertex of edge. Must be a vertex_key_column in vertices table. Cannot be NULL. |