Dear Jeff
I appreciate your reply.
My PostgreSQL is deployed on Amazon RDS, so the password of PostgreSQL is random and has various reserved characters.
I don't know if the reserved characters below are complete, and there are some characters (e.g. * , $) I tried without problems.
Could you tell me which characters require percent-encoding for PostgreSQL password?
space → %20
! → %21
" → %22
# → %23
$ → %24
% → %25
& → %26
' → %27
( → %28
) → %29
* → %2A
+ → %2B
, → %2C
- → %2D
. → %2E
/ → %2F
: → %3A
; → %3B
< → %3C
= → %3D
> → %3E
? → %3F
@ → %40
[ → %5B
\ → %5C
] → %5D
^ → %5E
_ → %5F
` → %60
{ → %7B
| → %7C
} → %7D
~ → %7E
Kind regards,
gzh
At 2022-10-12 22:01:15, "Jeffrey Walton" <noloader@xxxxxxxxx> wrote: >On Wed, Oct 12, 2022 at 7:16 AM gzh <gzhcoder@xxxxxxx> wrote: >> >> I found that the password can't contain the % character, and the other special characters (* , $) are no problem. > >You need to percent-encode the password if you wish to use the % >symbol in the password. There are other reserved characters that you >should percent-encode. See >https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-CONNSTRING >and https://www.rfc-editor.org/rfc/rfc3986#section-2.1 . > >Jeff > >> At 2022-10-12 16:28:51, "gzh" <gzhcoder@xxxxxxx> wrote: >> >> >> PostgreSQL version: 13.5 >> >> Operating system: windows 10 >> >> Description: >> >> >> I wrote a VBA application to connect to PostgreSQL database by psqlodbc. >> >> The application works fine when there are no special characters in the password. >> >> When the password contains special characters (e.g. * , $ %), >> >> the application responds with an error below: >> >> >> Number: -2147467259 >> >> Description: password authentication failed for user 'testdb' >> >> >> I made an sample as below: >> >> >> VBA >> >> ----------------------------- START --------------------------------- >> >> >> Sub dbconnTest() >> >> Dim rs As ADODB.Recordset >> >> Dim sql As String >> >> Dim i As Integer >> >> Dim rcnt As Integer >> >> >> >> Set cnn = New ADODB.Connection >> >> cnn.Open "Provider=MSDASQL;Driver=PostgreSQL Unicode;UID=postgres;port=5432;Server=localhost;Database=testdb;PWD=Gd*oB,$3Ln%pQ" >> >> >> >> Set rs = New ADODB.Recordset >> >> sql = "SELECT * FROM testtbl" >> >> >> >> rs.ActiveConnection = cnn >> >> rs.Source = sql >> >> rs.Open >> >> >> >> cnt = rs.Fields.Count >> >> rcnt = 2 >> >> >> >> Do Until rs.EOF >> >> For i = 0 To cnt - 1 >> >> Cells(rcnt, i + 1).Value = rs.Fields(i) >> >> Next >> >> >> >> rcnt = rcnt + 1 >> >> rs.MoveNext >> >> Loop >> >> >> >> Set rs = Nothing >> >> Set cnn = Nothing >> >> End Sub >> >> >> ----------------------------- END --------------------------------- >> >> >> >> Thanks for any help! >>
