[Qgis-user] pgRouting error

[Maria Teresa Vega]

Good afternoon, I'm working with pgRouting and I'm getting the following
error: "the function pgr_createtopology does not exist".

I have executed the following sentence:

alter table calles add column source integer;

alter table calles add column target integer;

select pgr_createTopology('calles', 0.0001, 'geom', 'id');



 Can anyone please help me?

 Thanks

-- 
María Teresa Vega Mesa.
Málaga. Spain
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