Inconsistent display of NULL and empty string values (RM #627)

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Issue migrated from Redmine: https://redmine.postgresql.org/issues/627
Originally created by Anonymous at 2012-11-25 10:25:00 UTC.

Hello,
I have a usability problem with pgAdmin, namely it displays certain values in different ways depending on a part of the application. Here is a screenshot of the problem: http://i.imgur.com/xrEYt.jpg

NULL values are shown as in the query editor, but as empty cells in the data editor. Empty strings are shown as empty cells in the query editor, but they are double apostrophes in the data one.

This issue makes it hard to check data in the tables, because you constantly have to remind yourself how the data is represented in each view.