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fixes #459 by making all operators variadic

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except for := and the various :<> variants

some operators only make sense in binary usage and will produce invalid
SQL if used in a non-binary manner
This commit is contained in:
Sean Corfield 2023-02-11 13:34:39 -08:00
parent f8532dfd33
commit 6324eca4fc
1 changed files with 4 additions and 7 deletions
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11
doc/extending-honeysql.md
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@ -82,16 +82,13 @@ You might have:
`honey.sql/register-op!` accepts a keyword (or a symbol) that
should be treated as a new infix operator.
By default, operators are treated as strictly binary --
accepting just two arguments -- and an exception will be
thrown if they are provided less than two or more than
two arguments. You can optionally specify that an operator
can take any number of arguments with `:variadic true`:
All operators are treated as variadic and an exception will be
thrown if they are provided no arguments:
```clojure
(require '[honey.sql :as sql])
(sql/register-op! :<=> :variadic true)
(sql/register-op! :<=>)
;; and then use the new operator:
(sql/format {:select [:*], :from [:table], :where [:<=> 13 :x 42]})
;; will produce:
@ -106,7 +103,7 @@ such `nil` expressions. You can specify `:ignore-nil true`
to achieve that:
```clojure
(sql/register-op! :<=> :variadic true :ignore-nil true)
(sql/register-op! :<=> :ignore-nil true)
;; and then use the new operator:
(sql/format {:select [:*], :from [:table], :where [:<=> nil :x 42]})
;; will produce: