[postgis-devel] case statement to cath nulls on joined tables
jdmorgan at unca.edu
Thu Feb 2 18:25:13 PST 2012
I am doing a left outer join between a polygon table and a data table.
returns fine from this join as expected. However, there are cases where
there isn’t data for a given polygon and this return as the expected null
in the result set. I would like to utilize something like a case statement
to catch the nulls and return a “more friendly” message. I have tried
unsuccessfully to use the following logic:
*Select case value_of_interest null then ‘more friendly message’ else
*From poly_table left outer join data_table one poly_table.common_id =
If someone could let me know where I am going wrong it would be greatly
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