10 lines
324 B
PL/PgSQL
10 lines
324 B
PL/PgSQL
CREATE OR REPLACE FUNCTION island_rank(area REAL) RETURNS INT AS $$
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SELECT CASE
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WHEN area < 10000000 THEN 6
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WHEN area BETWEEN 1000000 AND 15000000 THEN 5
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WHEN area BETWEEN 15000000 AND 40000000 THEN 4
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WHEN area > 40000000 THEN 3
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ELSE 7
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END;
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$$ LANGUAGE SQL IMMUTABLE STRICT;
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