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[FEAT MERGE] Lob SQL refactoring (Mem-LobLocator, expressions and dbms_lob adaptions)

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Co-authored-by: chaser-ch <chaser.ch@antgroup.com>
This commit is contained in:
obdev
2023-01-28 20:40:15 +08:00
committed by ob-robot
parent 4bb1033505
commit 3d4f554258
350 changed files with 19091 additions and 3918 deletions
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11
src/sql/engine/expr/ob_expr_operator.h
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@ -1198,18 +1198,19 @@ public:
common::ObCmpOp cmp_op)
{
bool need_no_cast = false;
bool has_lob_header = type1.has_lob_header() || type2.has_lob_header();
//特殊处理显示调用compare(例如：c1 > c2)，此时enum/set均应该转换成string处理
//内部比较（order by）,enum/set不需要转换。
if (common::ObDatumFuncs::is_string_type(type1.get_type()) &&
common::ObDatumFuncs::is_string_type(type2.get_type())) {
need_no_cast =
common::ObCharset::charset_type_by_coll(
type1.get_collation_type()) ==
common::ObCharset::charset_type_by_coll(type2.get_collation_type());
// if locator v2 enabled, cannot compare string/text directly remove this comment
// since cannot known whether a datum has locator in compare funcs
need_no_cast = common::ObCharset::charset_type_by_coll(type1.get_collation_type())
== common::ObCharset::charset_type_by_coll(type2.get_collation_type());
} else {
auto func_ptr = ObExprCmpFuncsHelper::get_eval_expr_cmp_func(
type1.get_type(), type2.get_type(), type1.get_scale(), type2.get_scale(), cmp_op,
lib::is_oracle_mode(), common::CS_TYPE_MAX);
lib::is_oracle_mode(), common::CS_TYPE_MAX, has_lob_header);
need_no_cast = (func_ptr != nullptr);
}
return need_no_cast;