It's caused by this wrong (old) code in the class wrapper,
now correctly shown as argument error:
--- tmysql.prg @ 372
ELSE
// Should query have returned rows? (Was it a SELECT like
query?)
IF ( ::nNumFields :=
mysql_num_fields( nSocket ) ) == 0
// Was not a SELECT so reset ResultHandle changed by previous
mysql_store_result()
::nResultHandle := NIL
ELSE
::lError := .T.
ENDIF
ENDIF
---
As you can see, wrong object is passed to MYSQL_NUM_FIELDS(),
which was so far was silently ignored.
I can't tell
what the original author wanted to do here, but I can clean
it to work as before, which means not to return error, but silently do
nothing.
Brgds,
Viktor
On Sat,
Feb 27, 2010 at 11:28 AM, Mitja Podgornik <yamam...@rocketmail.com> wrote:
Hi,
>Victor
>
>>In Your recent modification of mysql.c this system error occurs when
>>attempting to
>execute some commands:
>
>>Argument error: MYSQL_NUM_FIELDS(0)
>
>
>>Can You help?
>
>>Thank You
>
>>Regards, Mitja
>
>
>>#include "minigui.ch"
>
>>proc main()
>
>>local oServer, oQuery
>
>>oServer:=TMySQLServer():New("localhost", "root", "")
>>if !(oServer==nil)
>
>> /*
>> these two commands end with error above:
>
>> oQuery:=oServer:Query("set names 'cp1250'")
>> oQuery:=oServer:Query("use test")
>
>> */
>
>...
>
>
>
>
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