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fix incorrect removal of the A=A expression

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ChangerR
2023-02-06 17:35:36 +08:00
committed by ob-robot
parent 998db59e91
commit 077e5446b3
1 changed files with 3 additions and 1 deletions
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4
src/sql/optimizer/ob_log_plan.cpp
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@ -3814,7 +3814,9 @@ int ObLogPlan::inner_remove_redundancy_pred(ObIArray<ObRawExpr*> &join_pred,
if (OB_ISNULL(cur_expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(ret), K(cur_expr));
} else if (T_OP_EQ == cur_expr->get_expr_type()) {
} else if (T_OP_EQ == cur_expr->get_expr_type() &&
2 == cur_expr->get_param_count() &&
cur_expr->get_param_expr(0) != cur_expr->get_param_expr(1)) {
if (OB_ISNULL(left_expr = cur_expr->get_param_expr(0)) ||
OB_ISNULL(right_expr = cur_expr->get_param_expr(1))) {
ret = OB_ERR_UNEXPECTED;