Revision 6271
Added by Aaron Marcuse-Kubitza about 12 years ago
| schemas/functions.sql | ||
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| 146 | 146 |
LANGUAGE plpgsql IMMUTABLE |
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AS $$ |
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DECLARE |
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map hstore := '*' => '!' || map; -- set default value for '*' |
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match text := COALESCE(map -> value, map -> '*'); |
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match text := map -> value; |
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BEGIN |
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IF match IS NULL AND NOT map ? value THEN -- no match rather than NULL match |
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match := map -> '*'; -- use default entry |
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IF match IS NULL AND NOT map ? '*' THEN match := '!'; -- no default |
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END IF; |
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END IF; |
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|
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-- Interpret result |
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IF match = '!' THEN RAISE 'Value not in map: %', value USING ERRCODE = 'data_exception'; |
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ELSIF match = '*' THEN RETURN value; |
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ELSE RETURN match; |
Also available in: Unified diff
schemas/functions.sql: _map(): Fixed bug where entries that map to NULL were incorrectly being treated as if the entry didn't exist. Note that -> returns NULL both if the entry's value is NULL and if the entry doesn't exist, so ? must be used to recheck the presence of the key in the hstore.