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Editorial Team
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Asked: 2026-05-18T10:25:12+00:00

Below is my query to get a bulk of attributes of some objects. Are

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Below is my query to get a bulk of attributes of some objects. Are there anyway to optimize and shorten it?

SELECT object_id, value, name FROM attr_text WHERE object_id IN ('43', '42', '41', '40', '39') 
UNION 
SELECT object_id, value, name FROM attr_varchar WHERE object_id IN ('43', '42', '41', '40', '39') 
UNION
SELECT object_id, value, name FROM attr_int WHERE object_id IN ('43', '42', '41', '40', '39') 
UNION
SELECT object_id, value, name FROM attr_decimal WHERE object_id IN ('43', '42', '41', '40', '39') 
UNION
SELECT object_id, value, name FROM attr_datetime WHERE object_id IN ('43', '42', '41', '40', '39')

Results:

43   red    color1
43   blue   color2
43   small  size
42   black  color1
42   big    size
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1 Answer

  1. Editorial Team

    The most obvious improvement you could make is to use a sensible schema.

    Assuming that’s not an option, one thing I would suggest is changing UNION to UNION ALL as you probably don’t have have multiple attributes with the same name and value. The UNION [DISTINCT] just performs unnecessary comparisons. In any case you aren’t handling attributes with the same name and different values in your current query.

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