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MCOL-807 HOUR() is always positive

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It is undocumented but when MariaDB gets a negative time in the HOUR()
function it always returns a positive value. This does the same for us.
This commit is contained in:
Andrew Hutchings
2018-06-04 15:17:56 +01:00
parent 51afdc98fc
commit f850f8b0d0
1 changed files with 2 additions and 11 deletions
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13
utils/funcexp/func_hour.cpp
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@ -127,22 +127,13 @@ int64_t Func_hour::getIntVal(rowgroup::Row& row,
if (isTime)
{
// If negative, mask so it doesn't turn positive
bool isNeg = false;
// HOUR() is always positive in MariaDB, even for negative time
int64_t mask = 0;
if ((val >> 40) & 0x800)
mask = 0xfffffffffffff000;
if (!mask && (val >> 63))
{
isNeg = true;
}
val = mask | ((val >> 40) & 0xfff);
if (isNeg)
val *= -1;
val = abs(mask | ((val >> 40) & 0xfff));
}
else
{