Index: code-docs/sqlite-tools.scrbl
==================================================================
--- code-docs/sqlite-tools.scrbl
+++ code-docs/sqlite-tools.scrbl
@@ -37,11 +37,12 @@
 
 @defparam[sqltools:dbc con connection? #:value "No DB connection!"]
 
 The current database connection. This module assumes a single active connection and stores it in
 this parameter so you don’t have to pass it to a function every time you execute a query. It’s
-provided here so you can use it directly with the functions provided by @racketmodname[db].
+provided here so you can use it directly with the functions provided by @racketmodname[db] (all of
+which are re-provided by this module for convenience).
 
 @defboolparam[sqltools:log-queries? v #:value #f]
 
 A kill-switch that determines whether @racket[log-query] does anything.
 

Index: sqlite-tools.rkt
==================================================================
--- sqlite-tools.rkt
+++ sqlite-tools.rkt
@@ -59,12 +59,12 @@
   [make-insert/replace-query (stringish? (listof stringish?) . -> . string?)]
   [make-insert-rows-query    (stringish? (listof stringish?) (listof (listof stringish?)) . -> . string?)]
   [make-select-query         (stringish? (listof stringish?) #:where stringish? . -> . string?)]
 
   ;; Database operations
-  [init-db!                  ((pathish?) #:rest (listof string?) . ->* . void?)]
-  [query!                    ((string?) #:rest (listof any/c) . ->* . void?)]
+  [init-db!                  ((pathish?) () #:rest (listof string?) . ->* . void?)]
+  [query!                    ((string?) () #:rest (listof any/c) . ->* . void?)]
   [select-rows!              (case->
                               (stringish? (listof stringish?) any/c . -> . (or/c empty? hash?))
                               (string? (listof stringish?) . -> . (or/c empty? hash?)))]))
 
 ;; ~~~ Private use ~~~
@@ -222,11 +222,12 @@
 
 ;; Run a query with logging (if enabled) and return the result
 (define (query! q . parameters)
   (unless (good-connection?) (error "(query!) DB not connected"))
   (log-query q)
-  (apply query-exec (sqltools:dbc) q parameters))
+  (cond [(empty? parameters) (query-exec (sqltools:dbc) q)]
+        [else (apply query-exec (sqltools:dbc) q parameters)]))
 
 ;; Run a SELECT query, return a hash with field names as keys
 (define select-rows!
   (case-lambda
     ;; Use arbitrary query
@@ -249,11 +250,11 @@
   (define TESTDB "SQLITE-TOOLS-TEST.sqlite")
 
   ;; Check that things start out uninitialized and that queries don’t work
   (check-equal? (sqltools:dbc) uninitialized-connection)
   (check-false (file-exists? TESTDB))
-  (check-exn exn:fail? (lambda () (query! "-- nothing")))
+  (check-exn exn:fail? (lambda () (query! "SELECT 1")))
   (check-exn exn:fail? (lambda () (select-rows! 'posts '(title) 1)))
   
   ;; Initialize db connection, create file with no schema
   (test-begin
    (check-equal? (init-db! TESTDB) (void))