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Fix system function compatibility bugs

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This commit is contained in:
2149
2023-08-02 13:42:35 +00:00
committed by ob-robot
parent 1653ffdd23
commit 8063cbeebb
6 changed files with 300 additions and 125 deletions
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36
src/sql/engine/expr/ob_expr_oracle_decode.cpp
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@ -300,13 +300,37 @@ int ObExprOracleDecode::calc_result_typeN(ObExprResType &type,
//deduce string length
if (ob_is_string_type(type.get_type()) || ob_is_raw(type.get_type())) {
ObLength len = -1;
for (int64_t i = 2; i < param_num; i += 2 /*skip conditions */) {
if (types_stack[i].get_length() > len) {
len = types_stack[i].get_length();
if (is_oracle_mode() && (ob_is_string_tc(type.get_type()) || ob_is_raw(type.get_type()))) {
ObLength deduced_len = -1;
if (OB_ISNULL(type_ctx.get_session())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("session is NULL", K(ret));
}
for (int64_t i = 2; OB_SUCC(ret) && i < param_num; i += 2 /*skip conditions */) {
if (OB_FAIL(ObExprResultTypeUtil::deduce_max_string_length_oracle(type_ctx.get_session()->get_dtc_params(),
types_stack[i], type, deduced_len, type.get_length_semantics()))) {
LOG_WARN("fail to deduce max string length", K(ret));
} else if (deduced_len > len) {
len = deduced_len;
}
}
if (OB_SUCC(ret) && has_default) {
if (OB_FAIL(ObExprResultTypeUtil::deduce_max_string_length_oracle(type_ctx.get_session()->get_dtc_params(),
types_stack[param_num - 1], type, deduced_len, type.get_length_semantics()))) {
LOG_WARN("fail to deduce max string length", K(ret));
} else if (deduced_len > len) {
len = deduced_len;
}
}
} else {
for (int64_t i = 2; i < param_num; i += 2 /*skip conditions */) {
if (types_stack[i].get_length() > len) {
len = types_stack[i].get_length();
}
}
if (has_default) {
len = static_cast<ObLength>(MAX(types_stack[param_num - 1].get_length(), len));
}
}
if (has_default) {
len = static_cast<ObLength>(MAX(types_stack[param_num - 1].get_length(), len));
}
if (all_literal && lib::is_oracle_mode()) {
if (OB_FAIL(calc_result_type_for_literal(type, types_stack, param_num, type_ctx))) {