RE: datatype conversion

> From: P. Sankar [mailto:SankarP@xxxxxxxxxxxxxxxx]
> Sent: November 18, 2003 8:25 AM

Welcome, Sankar.  

> I have few doubts in datatype conversion using the DB library API 
> function dbconvert().  I have tried the following numbers to insert
> into SQL Server database after conversion.  
> 
> 123456789123456.8800
> 123456789123456.9900
> 123456789123456.9800
...
> dbconvert(dbproc, SYBMONEY, pSrc, sizeof(DBMONEY), 
> SYBDECIMAL, (unsigned
> char *)&decTemp, sizeof(DBDECIMAL));
> dbconvert(dbproc, SYBDECIMAL, (unsigned char *const)&decTemp,
> sizeof(DBDECIMAL), SYBCHAR, tmpstr, -1);
...
> For example, after conversion I am getting the result as follows.
> 
> 123456789123456.8700
> 123456789123456.9800
> 123456789123456.9700

Pennies!  What's a few pennies, these days, between friends?  

The place to look is the source code: src/tds/convert.c.  I suspect the
money->decimal conversion is likely culprit.  See tds_convert_money(), also
src/tds/numeric.c::tds_money_to_string().  

I do not think decimal->char is a problem, because money is good to four
decimal places and your data are only two deep.  

You might also want to look at src/tds/unittests/convert.c.  

A patch would be wonderful, if you can manage it.  Short of that, it would
be a great help if you could narrow it down to a function or algorithm.  

Thanks for the problem report.  

--jkl
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