Here’s a short, useful story that walks through the practical reality of downloading and setting up the PostgreSQL ODBC driver—something many people assume is trivial, but often isn’t. The Case of the Missing Driver
Even after correct install, the DSN didn’t work. The error: "Could not connect to server: Permission denied." postgres odbc download
Alex, a data analyst, needed to connect Tableau (on Windows) to a PostgreSQL database running on a Linux server. IT said, "Just use ODBC." Here’s a short, useful story that walks through
Alex had downloaded the 64-bit driver, but Tableau was running in 32-bit mode on that machine. ODBC drivers are not interchangeable between bitness. IT said, "Just use ODBC
After 30 minutes of frustration, Alex found the official PostgreSQL ODBC page: https://www.postgresql.org/ftp/odbc/versions/msi/
In Tableau, the "PostgreSQL Unicode" driver appeared. Connection worked. Dashboards loaded.