447 lines
16 KiB
C++
447 lines
16 KiB
C++
/**
|
|
* Copyright (c) 2021 OceanBase
|
|
* OceanBase CE is licensed under Mulan PubL v2.
|
|
* You can use this software according to the terms and conditions of the Mulan PubL v2.
|
|
* You may obtain a copy of Mulan PubL v2 at:
|
|
* http://license.coscl.org.cn/MulanPubL-2.0
|
|
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
|
|
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
|
|
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
|
|
* See the Mulan PubL v2 for more details.
|
|
*/
|
|
|
|
#define USING_LOG_PREFIX SQL_ENG
|
|
#include "sql/engine/expr/ob_expr_is.h"
|
|
#include "share/object/ob_obj_cast.h"
|
|
//#include "sql/engine/expr/ob_expr_promotion_util.h"
|
|
#include "sql/parser/ob_item_type.h"
|
|
#include "sql/session/ob_sql_session_info.h"
|
|
#include "share/config/ob_server_config.h"
|
|
|
|
namespace oceanbase {
|
|
using namespace common;
|
|
namespace sql {
|
|
|
|
ObExprIsBase::ObExprIsBase(ObIAllocator& alloc, ObExprOperatorType type, const char* name)
|
|
: ObRelationalExprOperator(alloc, type, name, 3){};
|
|
|
|
int ObExprIsBase::calc_result_type3(ObExprResType& type, ObExprResType& type1, ObExprResType& type2,
|
|
ObExprResType& type3, ObExprTypeCtx& type_ctx) const
|
|
{
|
|
int ret = OB_SUCCESS;
|
|
const ObSQLSessionInfo* session = static_cast<const ObSQLSessionInfo*>(type_ctx.get_session());
|
|
if (!session->use_static_typing_engine()) {
|
|
ObExprResType tmp_type2;
|
|
if (lib::is_oracle_mode() && type1.is_ext()) {
|
|
type.set_int32(); // not tinyint, compatible with MySQL
|
|
type.set_precision(DEFAULT_PRECISION_FOR_BOOL);
|
|
type.set_scale(DEFAULT_SCALE_FOR_INTEGER);
|
|
type.set_calc_type(type1.get_calc_type());
|
|
type.set_result_flag(OB_MYSQL_NOT_NULL_FLAG);
|
|
type2.set_calc_type(type2.get_type());
|
|
} else {
|
|
if (OB_FAIL(tmp_type2.assign(type2))) {
|
|
LOG_WARN("failed to copy type", K(ret), K(type2));
|
|
} else if (OB_FAIL(ObRelationalExprOperator::calc_result_type2(type, type1, tmp_type2, type_ctx))) {
|
|
LOG_WARN("failed to calc result type", K(ret), K(type1), K(tmp_type2));
|
|
} else {
|
|
// always allow NULL value
|
|
type.set_result_flag(OB_MYSQL_NOT_NULL_FLAG);
|
|
type2.set_calc_type(type2.get_type());
|
|
}
|
|
}
|
|
} else {
|
|
// TODO add collection process for PL
|
|
ObRawExpr* raw_expr = get_raw_expr();
|
|
ObOpRawExpr* op_expr = static_cast<ObOpRawExpr*>(raw_expr);
|
|
if (OB_ISNULL(op_expr) || OB_UNLIKELY(op_expr->get_param_count() != 3)) {
|
|
ret = OB_ERR_UNEXPECTED;
|
|
LOG_WARN("op raw expr is null", K(ret), K(op_expr));
|
|
} else {
|
|
// always allow NULL value
|
|
type.set_result_flag(OB_MYSQL_NOT_NULL_FLAG);
|
|
type2.set_calc_type(type2.get_type());
|
|
type3.set_calc_type(type3.get_type());
|
|
|
|
ObRawExpr* param2 = op_expr->get_param_expr(1);
|
|
ObConstRawExpr* const_param2 = static_cast<ObConstRawExpr*>(param2);
|
|
ObRawExpr* param3 = op_expr->get_param_expr(2);
|
|
ObConstRawExpr* const_param3 = static_cast<ObConstRawExpr*>(param3);
|
|
if (OB_ISNULL(const_param2) || OB_ISNULL(const_param3)) {
|
|
ret = OB_ERR_UNEXPECTED;
|
|
LOG_WARN("second or third child of is expr is null", K(ret), K(const_param2), K(const_param3));
|
|
} else if (!const_param2->get_value().is_null()) { // is true/false
|
|
if (ob_is_numeric_type(type1.get_type())) {
|
|
type1.set_calc_meta(type1.get_obj_meta());
|
|
type1.set_calc_accuracy(type1.get_accuracy());
|
|
} else {
|
|
type1.set_calc_type(ObNumberType);
|
|
const ObAccuracy& calc_acc = ObAccuracy::DDL_DEFAULT_ACCURACY2[0][ObNumberType];
|
|
type1.set_calc_accuracy(calc_acc);
|
|
}
|
|
} else { // is null
|
|
if (const_param3->get_value().is_true()) {
|
|
type1.set_calc_type(ObIntType);
|
|
} else {
|
|
type1.set_calc_type(type1.get_type());
|
|
}
|
|
// query range extract check the calc type of %type.
|
|
type.set_calc_meta(type1.get_calc_meta());
|
|
}
|
|
type.set_type(ObInt32Type);
|
|
type.set_precision(DEFAULT_PRECISION_FOR_BOOL);
|
|
type.set_scale(DEFAULT_SCALE_FOR_INTEGER);
|
|
}
|
|
type_ctx.set_cast_mode(type_ctx.get_cast_mode() | CM_NO_RANGE_CHECK);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int ObExprIs::calc_with_null(
|
|
common::ObObj& result, const ObObj& obj1, const ObObj& obj2, const ObObj& obj3, ObCastCtx& cast_ctx) const
|
|
{
|
|
int ret = OB_SUCCESS;
|
|
bool ret_bool = false;
|
|
UNUSED(obj2);
|
|
UNUSED(cast_ctx);
|
|
if (obj3.is_true()) {
|
|
if (obj1.is_null()) {
|
|
ret_bool = true;
|
|
} else {
|
|
int64_t int_val = 0;
|
|
EXPR_GET_INT64_V2(obj1, int_val);
|
|
if (OB_SUCC(ret)) {
|
|
if (int_val == 0) {
|
|
ret_bool = true;
|
|
} else {
|
|
ret_bool = false;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
if (lib::is_oracle_mode() && obj1.get_meta().is_ext()) {
|
|
ret = OB_NOT_SUPPORTED;
|
|
} else {
|
|
ret_bool = obj1.is_null();
|
|
}
|
|
}
|
|
|
|
if (OB_SUCC(ret)) {
|
|
result.set_int32(static_cast<int32_t>(ret_bool));
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int ObExprIsNot::calc_with_null(
|
|
ObObj& result, const ObObj& obj1, const ObObj& obj2, const ObObj& obj3, ObCastCtx& cast_ctx) const
|
|
{
|
|
int ret = OB_SUCCESS;
|
|
UNUSED(obj2);
|
|
UNUSED(obj3);
|
|
UNUSED(cast_ctx);
|
|
bool ret_bool = false;
|
|
if (lib::is_oracle_mode() && obj1.get_meta().is_ext()) {
|
|
ret = OB_NOT_SUPPORTED;
|
|
} else {
|
|
ret_bool = !obj1.is_null();
|
|
}
|
|
result.set_int32(static_cast<int32_t>(ret_bool));
|
|
return ret;
|
|
}
|
|
|
|
int ObExprIsBase::calc_with_int_internal(
|
|
ObObj& result, const ObObj& obj1, const ObObj& obj2, ObCastCtx& cast_ctx, bool is_not) const
|
|
{
|
|
int ret = OB_SUCCESS;
|
|
bool ret_bool = false;
|
|
if (obj1.is_null()) {
|
|
ret_bool = is_not;
|
|
} else if (obj1.is_tinyint()) {
|
|
ret_bool = is_not ? obj1.get_bool() != obj2.get_bool() : obj1.get_bool() == obj2.get_bool();
|
|
} else {
|
|
int64_t int_val = 0;
|
|
EXPR_GET_INT64_V2(obj1, int_val);
|
|
if (OB_SUCC(ret)) {
|
|
if ((int_val != 0 && obj2.get_bool() == is_not) || (int_val == 0 && obj2.get_bool() == !is_not)) {
|
|
ret_bool = false;
|
|
} else {
|
|
ret_bool = true;
|
|
}
|
|
} else {
|
|
ret = OB_SUCCESS;
|
|
if (obj2.get_bool() == is_not) {
|
|
ret_bool = true;
|
|
} else {
|
|
ret_bool = false;
|
|
}
|
|
}
|
|
}
|
|
if (OB_SUCC(ret)) {
|
|
result.set_int32(static_cast<int32_t>(ret_bool));
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int ObExprIs::calc_with_int(ObObj& result, const ObObj& obj1, const ObObj& obj2, ObCastCtx& cast_ctx) const
|
|
{
|
|
return calc_with_int_internal(result, obj1, obj2, cast_ctx, false);
|
|
}
|
|
|
|
int ObExprIsNot::calc_with_int(ObObj& result, const ObObj& obj1, const ObObj& obj2, ObCastCtx& cast_ctx) const
|
|
{
|
|
return calc_with_int_internal(result, obj1, obj2, cast_ctx, true);
|
|
}
|
|
|
|
// is null/true/false
|
|
int ObExprIsBase::calc(
|
|
ObObj& result, const ObObj& obj1, const ObObj& obj2, const ObObj& obj3, ObCastCtx& cast_ctx) const
|
|
{
|
|
int ret = OB_SUCCESS;
|
|
if (OB_UNLIKELY(!obj2.is_null() && !obj2.is_tinyint())) {
|
|
LOG_USER_ERROR(OB_INVALID_ARGUMENT_FOR_IS, to_cstring(obj1));
|
|
ret = OB_INVALID_ARGUMENT_FOR_IS;
|
|
LOG_WARN("invalid type for is operator", K(obj2));
|
|
} else {
|
|
if (obj2.is_null()) {
|
|
ret = calc_with_null(result, obj1, obj2, obj3, cast_ctx);
|
|
} else if (obj2.is_tinyint()) {
|
|
ret = calc_with_int(result, obj1, obj2, cast_ctx);
|
|
} // end else
|
|
}
|
|
return ret;
|
|
}
|
|
// the 3rd obj is used for this special case:
|
|
// 'select * from t1 where c1 is null' can get rows with c1 is '0000-00-00' in mysql mode.
|
|
int ObExprIsBase::calc_result3(
|
|
ObObj& result, const ObObj& obj1, const ObObj& obj2, const ObObj& obj3, common::ObExprCtx& expr_ctx) const
|
|
{
|
|
EXPR_DEFINE_CAST_CTX(expr_ctx, CM_WARN_ON_FAIL);
|
|
return calc(result, obj1, obj2, obj3, cast_ctx);
|
|
}
|
|
|
|
int ObExprIsBase::cg_expr_internal(ObExprCGCtx& op_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr,
|
|
const ObConstRawExpr*& const_param2, const ObConstRawExpr*& const_param3) const
|
|
{
|
|
UNUSED(op_cg_ctx);
|
|
int ret = OB_SUCCESS;
|
|
const ObOpRawExpr* op_raw_expr = static_cast<const ObOpRawExpr*>(&raw_expr);
|
|
if (rt_expr.arg_cnt_ != 3) {
|
|
ret = OB_INVALID_ARGUMENT;
|
|
LOG_WARN("isnot expr should have 3 params", K(ret), K(rt_expr.arg_cnt_));
|
|
} else if (OB_ISNULL(rt_expr.args_) || OB_ISNULL(rt_expr.args_[0]) || OB_ISNULL(rt_expr.args_[1]) ||
|
|
OB_ISNULL(rt_expr.args_[2])) {
|
|
ret = OB_ERR_UNEXPECTED;
|
|
LOG_WARN("children of isnot expr is null", K(ret), K(rt_expr.args_));
|
|
} else {
|
|
const ObRawExpr* param2 = op_raw_expr->get_param_expr(1);
|
|
const ObRawExpr* param3 = op_raw_expr->get_param_expr(2);
|
|
const_param2 = static_cast<const ObConstRawExpr*>(param2);
|
|
const_param3 = static_cast<const ObConstRawExpr*>(param3);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
#define EVAL_FUNC(type) \
|
|
if (is_not && is_true) { \
|
|
eval_func = ObExprIsNot::type##_is_not_true; \
|
|
} else if (is_not && !is_true) { \
|
|
eval_func = ObExprIsNot::type##_is_not_false; \
|
|
} else if (!is_not && is_true) { \
|
|
eval_func = ObExprIs::type##_is_true; \
|
|
} else if (!is_not && !is_true) { \
|
|
eval_func = ObExprIs::type##_is_false; \
|
|
}
|
|
|
|
int ObExprIsBase::cg_result_type_class(ObObjType type, ObExpr::EvalFunc& eval_func, bool is_not, bool is_true) const
|
|
{
|
|
int ret = OB_SUCCESS;
|
|
switch (type) {
|
|
case ObTinyIntType:
|
|
case ObSmallIntType:
|
|
case ObMediumIntType:
|
|
case ObInt32Type:
|
|
case ObIntType:
|
|
case ObUTinyIntType:
|
|
case ObUSmallIntType:
|
|
case ObUMediumIntType:
|
|
case ObUInt32Type:
|
|
case ObUInt64Type:
|
|
case ObBitType: {
|
|
EVAL_FUNC(int);
|
|
break;
|
|
}
|
|
case ObFloatType:
|
|
case ObUFloatType: {
|
|
EVAL_FUNC(float);
|
|
break;
|
|
}
|
|
case ObDoubleType:
|
|
case ObUDoubleType: {
|
|
EVAL_FUNC(double);
|
|
break;
|
|
}
|
|
case ObMaxType: {
|
|
ret = OB_ERR_UNEXPECTED;
|
|
LOG_WARN("is expr got unexpected type param", K(ret), K(type));
|
|
break;
|
|
}
|
|
default: {
|
|
EVAL_FUNC(number);
|
|
break;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int ObExprIs::cg_expr(ObExprCGCtx& op_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const
|
|
{
|
|
int ret = OB_SUCCESS;
|
|
const ObConstRawExpr* param2 = NULL;
|
|
const ObConstRawExpr* param3 = NULL;
|
|
ObObjType param1_type = ObMaxType;
|
|
if (OB_FAIL(cg_expr_internal(op_cg_ctx, raw_expr, rt_expr, param2, param3))) {
|
|
LOG_WARN("cg_expr_inner failed", K(ret));
|
|
} else if (OB_ISNULL(param2) || OB_ISNULL(param3)) {
|
|
ret = OB_ERR_UNEXPECTED;
|
|
LOG_WARN("const raw expr param2 or param3 is null", K(param2), K(param3));
|
|
} else if (FALSE_IT(param1_type = rt_expr.args_[0]->datum_meta_.type_)) {
|
|
} else if (param3->get_value().is_true()) { // special case: date value is '0000-00-00'.
|
|
rt_expr.eval_func_ = ObExprIs::calc_is_date_int_null;
|
|
} else if (param2->get_value().is_null()) { // c1 is null
|
|
rt_expr.eval_func_ = ObExprIs::calc_is_null;
|
|
} else if (param2->get_value().is_true()) {
|
|
if (OB_FAIL(cg_result_type_class(param1_type, rt_expr.eval_func_, false, true))) {
|
|
LOG_WARN("is expr got unexpected type param", K(ret));
|
|
}
|
|
} else if (param2->get_value().is_false()) {
|
|
if (OB_FAIL(cg_result_type_class(param1_type, rt_expr.eval_func_, false, false))) {
|
|
LOG_WARN("is expr got unexpected type param", K(ret));
|
|
}
|
|
} else {
|
|
ret = OB_ERR_UNEXPECTED;
|
|
LOG_WARN("second param of is expr is not null, true or false", K(ret), K(param2->get_value()));
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int ObExprIsNot::cg_expr(ObExprCGCtx& op_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const
|
|
{
|
|
int ret = OB_SUCCESS;
|
|
const ObConstRawExpr* param2 = NULL;
|
|
const ObConstRawExpr* param3 = NULL;
|
|
ObObjType param1_type = ObMaxType;
|
|
if (OB_FAIL(cg_expr_internal(op_cg_ctx, raw_expr, rt_expr, param2, param3))) {
|
|
LOG_WARN("cg_expr_inner failed", K(ret));
|
|
} else if (OB_ISNULL(param2) || OB_ISNULL(param3)) {
|
|
ret = OB_ERR_UNEXPECTED;
|
|
LOG_WARN("const raw expr param2 or param3 is null", K(param2), K(param3));
|
|
} else if (FALSE_IT(param1_type = rt_expr.args_[0]->datum_meta_.type_)) {
|
|
} else if (param2->get_value().is_null()) { // c1 is null
|
|
rt_expr.eval_func_ = ObExprIsNot::calc_is_not_null;
|
|
} else if (param2->get_value().is_true()) {
|
|
if (OB_FAIL(cg_result_type_class(param1_type, rt_expr.eval_func_, true, true))) {
|
|
LOG_WARN("is expr got unexpected type param", K(ret));
|
|
}
|
|
} else if (param2->get_value().is_false()) {
|
|
if (OB_FAIL(cg_result_type_class(param1_type, rt_expr.eval_func_, true, false))) {
|
|
LOG_WARN("is expr got unexpected type param", K(ret));
|
|
}
|
|
} else {
|
|
ret = OB_ERR_UNEXPECTED;
|
|
LOG_WARN("second param of is expr is not null, true, false or infinite or nan", K(ret), K(param2->get_value()));
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int ObExprIs::calc_is_date_int_null(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum)
|
|
{
|
|
int ret = OB_SUCCESS;
|
|
ObDatum* param1 = NULL;
|
|
if (OB_FAIL(expr.args_[0]->eval(ctx, param1))) {
|
|
LOG_WARN("eval first param failed", K(ret));
|
|
} else {
|
|
bool ret_bool = param1->is_null() || param1->get_int() == 0;
|
|
expr_datum.set_int32(static_cast<int32_t>(ret_bool));
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int ObExprIs::calc_is_null(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum)
|
|
{
|
|
int ret = OB_SUCCESS;
|
|
ObDatum* param1 = NULL;
|
|
if (OB_FAIL(expr.args_[0]->eval(ctx, param1))) {
|
|
LOG_WARN("eval first param failed", K(ret));
|
|
} else {
|
|
bool ret_bool = param1->is_null();
|
|
expr_datum.set_int32(static_cast<int32_t>(ret_bool));
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int ObExprIsNot::calc_is_not_null(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum)
|
|
{
|
|
int ret = OB_SUCCESS;
|
|
ObDatum* param1 = NULL;
|
|
if (OB_FAIL(expr.args_[0]->eval(ctx, param1))) {
|
|
LOG_WARN("eval first param failed", K(ret));
|
|
} else {
|
|
bool ret_bool = !param1->is_null();
|
|
expr_datum.set_int32(static_cast<int32_t>(ret_bool));
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
template <typename T>
|
|
int ObExprIsBase::is_zero(T number)
|
|
{
|
|
return 0 == number;
|
|
}
|
|
template <>
|
|
int ObExprIsBase::is_zero<number::ObCompactNumber>(number::ObCompactNumber number)
|
|
{
|
|
return number.is_zero();
|
|
}
|
|
|
|
#define NUMERIC_CALC_FUNC(type, func_name, bool_is_not, is_true, str_is_not) \
|
|
int func_name::type##_##str_is_not##_##is_true(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum) \
|
|
{ \
|
|
int ret = OB_SUCCESS; \
|
|
ObDatum* param1 = NULL; \
|
|
bool ret_bool = false; \
|
|
if (OB_FAIL(expr.args_[0]->eval(ctx, param1))) { \
|
|
LOG_WARN("eval first param failed", K(ret)); \
|
|
} else if (param1->is_null()) { \
|
|
ret_bool = bool_is_not; \
|
|
} else { \
|
|
ret_bool = bool_is_not == is_true ? is_zero(param1->get_##type()) : !is_zero(param1->get_##type()); \
|
|
} \
|
|
if (OB_SUCC(ret)) { \
|
|
expr_datum.set_int32(static_cast<int32_t>(ret_bool)); \
|
|
} \
|
|
return ret; \
|
|
}
|
|
|
|
NUMERIC_CALC_FUNC(int, ObExprIsNot, true, true, is_not)
|
|
NUMERIC_CALC_FUNC(float, ObExprIsNot, true, true, is_not)
|
|
NUMERIC_CALC_FUNC(double, ObExprIsNot, true, true, is_not)
|
|
NUMERIC_CALC_FUNC(number, ObExprIsNot, true, true, is_not)
|
|
|
|
NUMERIC_CALC_FUNC(int, ObExprIsNot, true, false, is_not)
|
|
NUMERIC_CALC_FUNC(float, ObExprIsNot, true, false, is_not)
|
|
NUMERIC_CALC_FUNC(double, ObExprIsNot, true, false, is_not)
|
|
NUMERIC_CALC_FUNC(number, ObExprIsNot, true, false, is_not)
|
|
|
|
NUMERIC_CALC_FUNC(int, ObExprIs, false, true, is)
|
|
NUMERIC_CALC_FUNC(float, ObExprIs, false, true, is)
|
|
NUMERIC_CALC_FUNC(double, ObExprIs, false, true, is)
|
|
NUMERIC_CALC_FUNC(number, ObExprIs, false, true, is)
|
|
|
|
NUMERIC_CALC_FUNC(int, ObExprIs, false, false, is)
|
|
NUMERIC_CALC_FUNC(float, ObExprIs, false, false, is)
|
|
NUMERIC_CALC_FUNC(double, ObExprIs, false, false, is)
|
|
NUMERIC_CALC_FUNC(number, ObExprIs, false, false, is)
|
|
} // namespace sql
|
|
} // namespace oceanbase
|