On 5/20/21 5:32 PM, Adriano dos Santos Fernandes wrote:
Hi!
Currently max. CHAR length is limited to 32767 and max. VARCHAR to 32765.
I didn't found any blocker prevent raising that limits to 65535 and
65533 respectively.
Even not going into details agraid I see one serious problem - ISC API
compatibility.
Look at XSQLVAR:
typedef struct
{
ISC_SHORT sqltype; /* datatype of field */
ISC_SHORT sqlscale; /* scale factor */
ISC_SHORT sqlsubtype; /* datatype subtype - currently
BLOBs only */
ISC_SHORT sqllen; /* length of data area */
sqllen is 16 bit, and it's signed. I.e. people will see negative lengths
if variables in sqlda. I'm afraid at least 99% of software working with
sqlda does not check for negative length, and receiving it will cause
undefined behavior.
Any idea how to avoid that?
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