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

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This commit is contained in:
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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8
src/sql/resolver/expr/ob_raw_expr_util.cpp
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@ -6611,6 +6611,14 @@ int ObRawExprUtils::check_need_cast_expr(const ObExprResType &src_type,
} else if ((ob_is_string_or_lob_type(in_type) && in_type == out_type && in_cs_type == out_cs_type)
|| (!ob_is_string_or_lob_type(in_type) && in_type == out_type)) {
need_cast = false;
if (lib::is_mysql_mode() && ob_is_double_type(in_type) &&
src_type.get_scale() != dst_type.get_scale() &&
src_type.get_precision() != PRECISION_UNKNOWN_YET) {
// for the conversion between doubles with increased scale in mysql mode,
// it is necessary to explicitly add the cast expression
need_cast = (SCALE_UNKNOWN_YET == dst_type.get_scale()) ||
(src_type.get_scale() < dst_type.get_scale());
}
} else if (ob_is_enumset_tc(out_type)) {
//no need add cast, will add column_conv later
need_cast = false;