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https://support.google.com/google-ads-data-manager…
PostgreSQL - Google Ads Data Manager Help
In Google Ads, open Tools > Shared library > Audience manager. Note: If you already created a segment and skipped adding a data source, click Tools > Data manager > + Connect Product, then go to step 3. If you previously linked a data source from the Data manager screen that you want to use, select Select an existing source. Enter your PostgreSQL database location, port, username, password ...