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I think I found a bug in ADO.NET driver for SA 11.

if I try to execute this code:

DbCommand command = connection.CreateCommand();
command.CommandText = "select 'my ' + 'string' from DUMMY";
string result = (string)command.ExecuteScalar();

Works fine. But if I change to use parameters, I get this error:

"iAnywhere.Data.SQLAnywhere.SAException: Cannot convert 'my string' to a int at iAnywhere.Data.SQLAnywhere.SACommand._ExecuteReader(CommandBehavior commandBehavior, Boolean isExecuteScalar, Boolean isBeginExecuteReader) at iAnywhere.Data.SQLAnywhere.SACommand.ExecuteScalar() "

In Interactive SQL, this command executes fine. If I change sql command to "select 'my ' || 'string' from DUMMY', ADO.NET executes fine too.

It's an bug or an expected behavor?

I'm using sa

asked 17 Dec '09, 14:00

Zote's gravatar image

accept rate: 43%

edited 05 Jan '10, 18:23

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answered 10 Jan '10, 19:17

Zote's gravatar image

accept rate: 43%

I copied/pasted your code into a VS2008 project and the last line gives the error:

Cannot implicitly convert type 'object' to 'string'. An explicit conversion exists (are you missing a cast?)

So if I do either of:

string result = (string)command.ExecuteScalar();


string result = command.ExecuteScalar().ToString();

Then I get the correct result. Is this what you expected? I'm using SA


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answered 04 Jan '10, 21:23

Jos%C3%A9%20Ramos's gravatar image

José Ramos
accept rate: 30%

sorry, i'll correct above code. I'm working like your first option.

(05 Jan '10, 03:02) Zote

Whats your SA version ?

(05 Jan '10, 03:03) Zote

He said "I'm using SA"... what is your version?

(05 Jan '10, 07:26) Breck Carter

Sorry, it's my fault :( I'm using I'll update it and test again.

(05 Jan '10, 10:31) Zote

+1 fault mine. Using above sql command, it works fine. But using parameters (and its my real case) it crashes.

(05 Jan '10, 18:21) Zote

Try starting a new question, with exact code and exact versions of everything and exact error message if possible... sometimes a reboot helps :)

(05 Jan '10, 21:41) Breck Carter

Nice tip! Tomorrow I'll, I'm at home now.

(05 Jan '10, 23:33) Zote
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question asked: 17 Dec '09, 14:00

question was seen: 2,619 times

last updated: 10 Jan '10, 19:17