I've a table (from a client, not created here) with a column that should be the primary key, but not all rows have a value for this attribute. The column format is VARCHAR(12) and has a variety of values, such as 96-A000672 and 9612-0881 (probably assigned by different analytical laboratories). A simple sequence of numbers would do the job of replacing NULL values. What is the most parsimonious way to replace NULLs with unique values for this column? I also need to add such values for a new set of data that I'm in the process of translating from spreadsheet format to the table structure. Rich -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
