On Mon, Apr 8, 2013 at 11:27 AM, Rodrigo Barboza <rodrigombu...@gmail.com>wrote:
>
>
> On Mon, Apr 8, 2013 at 11:25 AM, Tom Lane <t...@sss.pgh.pa.us> wrote:
>
>> Rodrigo Barboza <rodrigombu...@gmail.com> writes:
>> > UPDATE tm32 SET a = a + 1 WHERE a > $i;
>> > ERROR: unsupported type: 202886
>>
>> I'm betting that's coming from scalargtsel, which doesn't know anything
>> about your type, but you've nominated it to be the selectivity function
>> for ">" anyway.
>>
>> /*
>> * Can't get here unless someone tries to use
>> scalarltsel/scalargtsel on
>> * an operator with one numeric and one non-numeric operand.
>> */
>> elog(ERROR, "unsupported type: %u", typid);
>>
>> regards, tom lane
>>
>
>
> Yes, I found it in the code, but I followed the example from the postgres
> documentation that uses this function.
> And why does it work sometimes? Why not other times?
>
>
Here is a very simple case and weird behavior. I select * from a table and
returns 4 entries.
But when I run with a filter the error raises and crazy values are printed
from the params.
Here is my funcitons where I compare the values:
typedef uint32_t TmUInt32;
static int
tmuint32_int32_abs_cmp_internal(TmUInt32 a, int32_t b)
{
int ret;
elog(NOTICE, "funcao:%s linha:%d\n", *_FUNCTION_*, *_LINE_*);
if (a < b) ret = -1;
else if (a > b) ret = 1;
else ret = 0;
elog(NOTICE, "funcao:%s linha:%d, ret: %d a: %u\n", *_FUNCTION_*, *_LINE_*,
ret, a);
return ret;
}
PG_FUNCTION_INFO_V1(tmuint32_int32_abs_gt);
Datum
tmuint32_int32_abs_gt(PG_FUNCTION_ARGS)
{
TmUInt32 *param1;
int32_t param2;
elog(NOTICE, "funcao:%s linha:%d\n", *_FUNCTION_*, *_LINE_*);
if(PG_ARGISNULL(0) || PG_ARGISNULL(1)) PG_RETURN_NULL();
param1 = (TmUInt32 *) PG_GETARG_POINTER(0);
param2 = DatumGetInt32(PG_GETARG_DATUM(1));
elog(NOTICE, "funcao:%s linha:%d param1: %u, param2: %d\n", *_FUNCTION_*, *
_LINE_*, *param1, param2);
PG_RETURN_BOOL(tmuint32_int32_abs_cmp_internal(*param1, param2) > 0);
}
And here is the simple test.
-- SIMPLE QUERY
select * from a;
NOTICE: funcao:tmuint32_out linha:191
NOTICE: funcao:tmuint32_out linha:191
NOTICE: funcao:tmuint32_out linha:191
NOTICE: funcao:tmuint32_out linha:191
a
---
0
1
2
3
(4 rows)
_________________________________________________________________
-- QUERY WHITH FILTER
select * from a where a > 1;
NOTICE: funcao:tmuint32_int32_abs_gt linha:1296
NOTICE: funcao:tmuint32_int32_abs_gt linha:1303 param1: 0, param2: 1
NOTICE: funcao:tmuint32_int32_abs_cmp_internal linha:742
NOTICE: funcao:tmuint32_int32_abs_cmp_internal linha:746, ret: -1 a: 0
NOTICE: funcao:tmuint32_int32_abs_gt linha:1296
NOTICE: funcao:tmuint32_int32_abs_gt linha:1303 param1: 99, param2: 1
NOTICE: funcao:tmuint32_int32_abs_cmp_internal linha:742
NOTICE: funcao:tmuint32_int32_abs_cmp_internal linha:746, ret: 1 a: 99
NOTICE: funcao:tmuint32_int32_abs_gt linha:1296
NOTICE: funcao:tmuint32_int32_abs_gt linha:1303 param1: 50, param2: 1
NOTICE: funcao:tmuint32_int32_abs_cmp_internal linha:742
NOTICE: funcao:tmuint32_int32_abs_cmp_internal linha:746, ret: 1 a: 50
NOTICE: funcao:tmuint32_int32_abs_gt linha:1296
NOTICE: funcao:tmuint32_int32_abs_gt linha:1303 param1: 24, param2: 1
NOTICE: funcao:tmuint32_int32_abs_cmp_internal linha:742
NOTICE: funcao:tmuint32_int32_abs_cmp_internal linha:746, ret: 1 a: 24
NOTICE: funcao:tmuint32_int32_abs_gt linha:1296
NOTICE: funcao:tmuint32_int32_abs_gt linha:1303 param1: 12, param2: 1
NOTICE: funcao:tmuint32_int32_abs_cmp_internal linha:742
NOTICE: funcao:tmuint32_int32_abs_cmp_internal linha:746, ret: 1 a: 12
NOTICE: funcao:tmuint32_int32_abs_gt linha:1296
NOTICE: funcao:tmuint32_int32_abs_gt linha:1303 param1: 6, param2: 1
NOTICE: funcao:tmuint32_int32_abs_cmp_internal linha:742
NOTICE: funcao:tmuint32_int32_abs_cmp_internal linha:746, ret: 1 a: 6
NOTICE: funcao:tmuint32_int32_abs_gt linha:1296
NOTICE: funcao:tmuint32_int32_abs_gt linha:1303 param1: 2, param2: 1
NOTICE: funcao:tmuint32_int32_abs_cmp_internal linha:742
NOTICE: funcao:tmuint32_int32_abs_cmp_internal linha:746, ret: 1 a: 2
NOTICE: funcao:tmuint32_int32_abs_gt linha:1296
NOTICE: funcao:tmuint32_int32_abs_gt linha:1303 param1: 1, param2: 1
NOTICE: funcao:tmuint32_int32_abs_cmp_internal linha:742
NOTICE: funcao:tmuint32_int32_abs_cmp_internal linha:746, ret: 0 a: 1
ERROR: unsupported type: 220200
