Cost - Category¶
Proposed functions for next mayor release.
They are not officially in the current release.
They will likely officially be part of the next mayor release:
The functions make use of ANY-INTEGER and ANY-NUMERICAL
Name might not change. (But still can)
Signature might not change. (But still can)
Functionality might not change. (But still can)
pgTap tests have being done. But might need more.
Documentation might need refinement.
Each function works as part of the family it belongs to.
The main Characteristics are:
It does not return a path.
Returns the sum of the costs of the shortest path of each pair combination of nodes requested.
Let be the case the values returned are stored in a table, so the unique index would be the pair:
Depending on the function and its parameters, the results can be symmetric.
The aggregate cost of \((u, v)\) is the same as for \((v, u)\).
Any duplicated value in the start or end vertex identifiers are ignored.
The returned values are ordered:
Indices and tables