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Merge pull request #69 from mishok13/nulls-first-last-in-order-by

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NULL order specification support
This commit is contained in:
Michael Blume 2015-04-17 14:20:23 -07:00
commit 198115fb84
3 changed files with 17 additions and 10 deletions
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6
README.md
View file

@ -232,7 +232,7 @@ Here's a big, complicated query. Note that Honey SQL makes no attempt to verify
[:between :f.e 10 20]])
(group :f.a)
(having [:< 0 :f.e])
(order-by [:b.baz :desc] :c.quux)
(order-by [:b.baz :desc] :c.quux [:f.a :nulls-first])
(limit 50)
(offset 10))
=> {:select [:f.* :b.baz :c.quux [:b.bla "bla-bla"]
@ -249,7 +249,7 @@ Here's a big, complicated query. Note that Honey SQL makes no attempt to verify
[:between :f.e 10 20]]
:group-by [:f.a]
:having [:< 0 :f.e]
:order-by [[:b.baz :desc] :c.quux]
:order-by [[:b.baz :desc] :c.quux [:f.a :nulls-first]
:limit 50
:offset 10}
@ -265,7 +265,7 @@ Here's a big, complicated query. Note that Honey SQL makes no attempt to verify
OR f.e BETWEEN 10 AND 20)
GROUP BY f.a
HAVING 0 < f.e
ORDER BY b.baz DESC, c.quux
ORDER BY b.baz DESC, c.quux, f.a NULLS FIRST
LIMIT 50
OFFSET 10 "
"bort" "gabba" 2]

13
src/honeysql/format.clj
View file

@ -415,9 +415,16 @@
(str "ORDER BY "
(comma-join (for [field fields]
(if (sequential? field)
(let [[field order] field]
(str (to-sql field) " " (if (= :desc order)
"DESC" "ASC")))
(let [[field & modifiers] field]
(string/join " "
(cons (to-sql field)
(for [modifier modifiers]
(case modifier
:desc "DESC"
:asc "ASC"
:nulls-first "NULLS FIRST"
:nulls-last "NULLS LAST"
"")))))
(to-sql field))))))
(defmethod format-clause :limit [[_ limit] _]

8
test/honeysql/core_test.clj
View file

@ -24,7 +24,7 @@
;;(merge-where [:not= nil :b.bla])
(group :f.a)
(having [:< 0 :f.e])
(order-by [:b.baz :desc] :c.quux)
(order-by [:b.baz :desc] :c.quux [:f.a :nulls-first])
(limit 50)
(offset 10))
m2 {:select [:f.* :b.baz :c.quux [:b.bla :bla-bla]
@ -44,7 +44,7 @@
;;:merge-where [:not= nil :b.bla]
:group-by :f.a
:having [:< 0 :f.e]
:order-by [[:b.baz :desc] :c.quux]
:order-by [[:b.baz :desc] :c.quux [:f.a :nulls-first]]
:limit 50
:offset 10}
m3 (sql/build m2)
@ -52,14 +52,14 @@
(testing "Various construction methods are consistent"
(is (= m1 m3 m4)))
(testing "SQL data formats correctly"
(is (= ["SELECT DISTINCT f.*, b.baz, c.quux, b.bla AS bla_bla, now(), @x := 10 FROM foo f, baz b INNER JOIN draq ON f.b = draq.x LEFT JOIN clod c ON f.a = c.d RIGHT JOIN bock ON bock.z = c.e FULL JOIN beck ON beck.x = c.y WHERE ((f.a = ? AND b.baz <> ?) OR (1 < 2 AND 2 < 3) OR (f.e in (1, ?, 3)) OR f.e BETWEEN 10 AND 20) GROUP BY f.a HAVING 0 < f.e ORDER BY b.baz DESC, c.quux LIMIT 50 OFFSET 10 "
(is (= ["SELECT DISTINCT f.*, b.baz, c.quux, b.bla AS bla_bla, now(), @x := 10 FROM foo f, baz b INNER JOIN draq ON f.b = draq.x LEFT JOIN clod c ON f.a = c.d RIGHT JOIN bock ON bock.z = c.e FULL JOIN beck ON beck.x = c.y WHERE ((f.a = ? AND b.baz <> ?) OR (1 < 2 AND 2 < 3) OR (f.e in (1, ?, 3)) OR f.e BETWEEN 10 AND 20) GROUP BY f.a HAVING 0 < f.e ORDER BY b.baz DESC, c.quux, f.a NULLS FIRST LIMIT 50 OFFSET 10 "
"bort" "gabba" 2]
(sql/format m1 {:param1 "gabba" :param2 2}))))
(testing "SQL data prints and reads correctly"
(is (= m1 (read-string (pr-str m1)))))
(testing "SQL data formats correctly with alternate param naming"
(is (= (sql/format m1 :params {:param1 "gabba" :param2 2} :parameterizer :postgresql)
["SELECT DISTINCT f.*, b.baz, c.quux, b.bla AS bla_bla, now(), @x := 10 FROM foo f, baz b INNER JOIN draq ON f.b = draq.x LEFT JOIN clod c ON f.a = c.d RIGHT JOIN bock ON bock.z = c.e FULL JOIN beck ON beck.x = c.y WHERE ((f.a = $1 AND b.baz <> $2) OR (1 < 2 AND 2 < 3) OR (f.e in (1, $3, 3)) OR f.e BETWEEN 10 AND 20) GROUP BY f.a HAVING 0 < f.e ORDER BY b.baz DESC, c.quux LIMIT 50 OFFSET 10 "
["SELECT DISTINCT f.*, b.baz, c.quux, b.bla AS bla_bla, now(), @x := 10 FROM foo f, baz b INNER JOIN draq ON f.b = draq.x LEFT JOIN clod c ON f.a = c.d RIGHT JOIN bock ON bock.z = c.e FULL JOIN beck ON beck.x = c.y WHERE ((f.a = $1 AND b.baz <> $2) OR (1 < 2 AND 2 < 3) OR (f.e in (1, $3, 3)) OR f.e BETWEEN 10 AND 20) GROUP BY f.a HAVING 0 < f.e ORDER BY b.baz DESC, c.quux, f.a NULLS FIRST LIMIT 50 OFFSET 10 "
"bort" "gabba" 2])))))
(deftest test-cast