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Any well-formed single statement query which is terminated by a semi-colon and has extra space after the semi-colon raises 'multiple statements given' error.

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The cause is any extra space after a terminating semi-colon in a SQL string passed to sqlite3_prepare_v2 procedure in the prepare1* method of `db` Sqlite3 connection% implementation will result in non-false tail and zero prep-status values being returned. The checking code sees the non-false tail value and raises the "multiple statements given" exception.

The easy fix is to trim any trailing whitespace by calling string-trim on the buffer string before its converted to a byte string in the copy-buffer procedure used by sqlite3_prepare_v2 to initialize the sql-buffer.

See Issue #1702
This commit is contained in:
Alexander McLin 2017-05-24 13:55:51 -04:00 committed by Ryan Culpepper
parent 31d7dd0317
commit dfd585db33
1 changed files with 2 additions and 1 deletions
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3
racket/collects/db/private/sqlite3/ffi.rkt
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@ -2,6 +2,7 @@
(require (for-syntax racket/base
setup/cross-system)
racket/runtime-path
racket/string
ffi/unsafe
ffi/unsafe/define
setup/cross-system)
@ -60,7 +61,7 @@
;; -- Stmt --
(define (copy-buffer buffer)
(let* ([buffer (string->bytes/utf-8 buffer)]
(let* ([buffer (string->bytes/utf-8 (string-trim buffer))]
[n (bytes-length buffer)]
[rawcopy (malloc (add1 n) 'atomic-interior)]
[copy (make-sized-byte-string rawcopy n)])