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add DEGREES() function that converts radian to degree.

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Monk-Liu
2021-10-13 20:00:57 +08:00
committed by wangzelin.wzl
parent 614d2970e8
commit 75c14d5c88
9 changed files with 180 additions and 5 deletions
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29
src/sql/engine/expr/ob_datum_cast.cpp
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@ -2230,7 +2230,14 @@ CAST_FUNC_NAME(number, year)
if (OB_ISNULL(nmb_buf)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("null pointer", K(ret), K(nmb_buf));
} else if (OB_FAIL(common_string_year(expr, ObString(strlen(nmb_buf), nmb_buf), res_datum))) {
} else if (nmb.is_negative()) {
// the year shouldn't accept a negative number, if we use the common_string_year.
// number like -0.4 could be converted to year, which should raise error in mysql
if (OB_FAIL(common_int_year(expr, INT_MIN, res_datum))) {
LOG_WARN("common_int_year failed", K(ret));
}
} else if (OB_FAIL(common_string_year(expr, ObString(strlen(nmb_buf), nmb_buf),
res_datum))) {
LOG_WARN("common_string_year failed", K(ret));
}
}
@ -2635,6 +2642,24 @@ CAST_FUNC_NAME(double, time)
return ret;
}
CAST_FUNC_NAME(double, year)
{
EVAL_ARG()
{
// When we insert 999999999999999999999.9(larger than max int) into a year field in mysql
// Mysql raise the same error as we insert 100 into a year field (1264).
// So the cast from double to int won't raise extra error. That's why we directly use
// static_cast here. Mysql will convert the double to nearest int and insert it to the year field.
double in_val = child_res->get_double();
in_val = in_val < 0 ? INT_MIN : in_val + 0.5;
int64_t val_int = static_cast<int64_t>(in_val);
if (OB_FAIL(common_int_year(expr, val_int, res_datum))) {
LOG_WARN("common_int_time failed", K(ret), K(val_int));
}
}
return ret;
}
CAST_FUNC_NAME(double, string)
{
EVAL_ARG()
@ -5916,7 +5941,7 @@ ObExpr::EvalFunc OB_DATUM_CAST_ORACLE_IMPLICIT[ObMaxTC][ObMaxTC] = {
cast_inconsistent_types, /*datetime*/
cast_not_expected, /*date*/
cast_not_expected, /*time*/
cast_not_expected, /*year*/
double_year, /*year*/
double_string, /*string*/
cast_not_expected, /*extend*/
cast_not_expected, /*unknown*/