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fix some bugs about NULL propagation

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This commit is contained in:
JinmaoLi
2024-03-26 04:45:58 +00:00
committed by ob-robot
parent 6f10db934c
commit afc486e2df
4 changed files with 47 additions and 28 deletions
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8
src/sql/resolver/expr/ob_shared_expr_resolver.cpp
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@ -16,6 +16,7 @@
#include "sql/ob_sql_context.h"
#include "lib/oblog/ob_log_module.h"
#include "lib/oblog/ob_log_print_kv.h"
#include "sql/rewrite/ob_transform_utils.h"
using namespace oceanbase;
using namespace oceanbase::sql;
@ -164,10 +165,15 @@ int ObSharedExprResolver::get_shared_instance(ObRawExpr *expr,
ObRawExpr *new_param_expr = NULL;
bool is_param_new = false;
bool disable_share_child = false;
if (old_param_expr->get_expr_type() == T_QUESTIONMARK) {
if (OB_ISNULL(old_param_expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpected null", K(ret));
} else if (old_param_expr->get_expr_type() == T_QUESTIONMARK) {
if (old_param_expr->has_flag(IS_STATIC_PARAM) && disable_share_const_level_ > 0) {
disable_share_expr = true;
}
} else if (ObTransformUtils::is_const_null(*old_param_expr)) {
// skip const null
} else if (expr->get_expr_type() == T_FUN_SYS_CAST && i == 1) {
// skip exec var and question mark
} else if (OB_FAIL(SMART_CALL(get_shared_instance(old_param_expr,