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[FEAT MERGE] Support float/double(m, d) in mysql mode

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hezuojiao
2022-12-29 12:09:23 +00:00
committed by ob-robot
parent d967637528
commit 26f2754db2
58 changed files with 695 additions and 118 deletions
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20
src/sql/engine/expr/ob_expr_cast.cpp
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@ -332,13 +332,25 @@ int ObExprCast::calc_result_type2(ObExprResType &type,
// however, ob use -1 as default precision, so it is a valid value
type.set_collation_type(dst_type.get_collation_type());
ObPrecision float_precision = dst_type.get_precision();
if (float_precision < -1 || float_precision > OB_MAX_DOUBLE_FLOAT_PRECISION) {
ObScale float_scale = dst_type.get_scale();
if (OB_UNLIKELY(float_scale > OB_MAX_DOUBLE_FLOAT_SCALE)) {
ret = OB_ERR_TOO_BIG_SCALE;
LOG_USER_ERROR(OB_ERR_TOO_BIG_SCALE, float_scale, "CAST", OB_MAX_DOUBLE_FLOAT_SCALE);
LOG_WARN("scale of float overflow", K(ret), K(float_scale), K(float_precision));
} else if (float_precision < -1 ||
(SCALE_UNKNOWN_YET == float_scale && float_precision > OB_MAX_DOUBLE_FLOAT_PRECISION)) {
ret = OB_ERR_TOO_BIG_PRECISION;
LOG_USER_ERROR(OB_ERR_TOO_BIG_PRECISION, float_precision, "CAST", OB_MAX_DOUBLE_FLOAT_PRECISION);
} else if (float_precision <= OB_MAX_FLOAT_PRECISION) {
type.set_type(ObFloatType);
} else if (SCALE_UNKNOWN_YET == float_scale) {
if (float_precision <= OB_MAX_FLOAT_PRECISION) {
type.set_type(ObFloatType);
} else {
type.set_type(ObDoubleType);
}
} else {
type.set_type(ObDoubleType);
type.set_type(ObFloatType);
type.set_precision(float_precision);
type.set_scale(float_scale);
}
} else {
type.set_type(dst_type.get_type());