I\'m trying to pull a heroku database to my local Windows computer by using
heroku pg:pull HEROKU_POSTGRESQL_DATABASE mydatabase --app myapp
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I realize this is from months ago, but I'll answer in hopes of helping somebody else. You need to set your path variables. My Computer > Advanced system settings; Click on "Environment variables" and then look at "System variables". Scroll down to "Path" or "PATH", edit it, and go to the very end of the text box. Add ;C:\Program Files (x86)\PostgreSQL\9.3\bin and ;C:\Program Files (x86)\PostgreSQL\9.3\lib (or whatever your equivalent paths are for bin and lib). Restart your command prompt and it should work. :)