Retrieve a record that has 2 specific features in SQL -

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i have following database of pictures (a picture can have multiple features):

table picture ------------- id     name  1      mona lisa 2      scream   table features ------------- id     name        pictureid (fk picture)  1      portrait    2 2      expressive  2 3      big         2 4      small       1 5      expressive  1 5      big         1

i'd wish query retrieves pictures portrait , big, (so result in case "scream"). i've come query retrieve it, i'm not sure if prettiest , efficient way it. here's proposal:

select * picture o (select count(*) feature c o.id = c.pictureid , c.name '%portrait%') >= 1 , (select count(*) feature c o.id = c.pictureid , c.name '%big%') >= 1

in case, have go through features table twice (which, personal taste, find "ugly").

thanks , regards

select picture.name picture  join features  on picture.id=features.pictureid features.name in('portrait','big') group features.pictureid having count(distinct features.id)>=2

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