/** * 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. */ #ifndef _OB_EXPR_MINUS_H_ #define _OB_EXPR_MINUS_H_ #include #include "sql/engine/expr/ob_expr_operator.h" namespace oceanbase { namespace sql { class ObExprCGCtx; class ObExprMinus: public ObArithExprOperator { public: ObExprMinus(); explicit ObExprMinus(common::ObIAllocator &alloc, ObExprOperatorType type = T_OP_MINUS); virtual ~ObExprMinus() {}; virtual int calc_result_type2(ObExprResType &type, ObExprResType &type1, ObExprResType &type2, common::ObExprTypeCtx &type_ctx) const; static int minus_datetime(common::ObObj &res, const common::ObObj &left, const common::ObObj &right, common::ObIAllocator *allocator, common::ObScale scale); static int calc(ObDatum &res, const ObDatum &left, const ObDatum &right, const ObDatumMeta &left_meta, const ObDatumMeta &right_meta, ObIAllocator *allocator, uint64_t tenant_id); virtual int cg_expr(ObExprCGCtx &op_cg_ctx, const ObRawExpr &raw_expr, ObExpr &rt_expr) const override; private: OB_INLINE static int minus_int(common::ObObj &res, const common::ObObj &left, const common::ObObj &right, common::ObIAllocator *allocator, common::ObScale scale); OB_INLINE static int minus_uint(common::ObObj &res, const common::ObObj &left, const common::ObObj &right, common::ObIAllocator *allocator, common::ObScale scale); static int minus_float(common::ObObj &res, const common::ObObj &left, const common::ObObj &right, common::ObIAllocator *allocator, common::ObScale scale); static int minus_double(common::ObObj &res, const common::ObObj &left, const common::ObObj &right, common::ObIAllocator *allocator, common::ObScale scale); static int minus_double_no_overflow(common::ObObj &res, const common::ObObj &left, const common::ObObj &right, common::ObIAllocator *allocator, common::ObScale scale); static int minus_number(common::ObObj &res, const common::ObObj &left, const common::ObObj &right, common::ObIAllocator *allocator, common::ObScale scale); static int calc_datetime_minus(common::ObObj &res, const common::ObObj &left, const common::ObObj &right, common::ObExprCtx &expr_ctx, common::ObScale calc_scale); static int calc_timestamp_minus(common::ObObj &res, const common::ObObj &left, const common::ObObj &right, const common::ObTimeZoneInfo *tz_info); DISALLOW_COPY_AND_ASSIGN(ObExprMinus); public: static int minus_null(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum); static int minus_int_int(EVAL_FUNC_ARG_DECL); static int minus_int_int_batch(BATCH_EVAL_FUNC_ARG_DECL); static int minus_int_uint(EVAL_FUNC_ARG_DECL); static int minus_int_uint_batch(BATCH_EVAL_FUNC_ARG_DECL); static int minus_uint_uint(EVAL_FUNC_ARG_DECL); static int minus_uint_uint_batch(BATCH_EVAL_FUNC_ARG_DECL); static int minus_uint_int(EVAL_FUNC_ARG_DECL); static int minus_uint_int_batch(BATCH_EVAL_FUNC_ARG_DECL); static int minus_float_float(EVAL_FUNC_ARG_DECL); static int minus_float_float_batch(BATCH_EVAL_FUNC_ARG_DECL); static int minus_double_double(EVAL_FUNC_ARG_DECL); static int minus_double_double_batch(BATCH_EVAL_FUNC_ARG_DECL); static int minus_number_number(EVAL_FUNC_ARG_DECL); static int minus_number_number_batch(BATCH_EVAL_FUNC_ARG_DECL); static int minus_intervalym_intervalym(EVAL_FUNC_ARG_DECL); static int minus_intervalym_intervalym_batch(BATCH_EVAL_FUNC_ARG_DECL); static int minus_intervalds_intervalds(EVAL_FUNC_ARG_DECL); static int minus_intervalds_intervalds_batch(BATCH_EVAL_FUNC_ARG_DECL); static int minus_datetime_intervalym(EVAL_FUNC_ARG_DECL); static int minus_datetime_intervalym_batch(BATCH_EVAL_FUNC_ARG_DECL); static int minus_datetime_intervalds(EVAL_FUNC_ARG_DECL); static int minus_datetime_intervalds_batch(BATCH_EVAL_FUNC_ARG_DECL); static int minus_timestamptz_intervalym(EVAL_FUNC_ARG_DECL); static int minus_timestamptz_intervalym_batch(BATCH_EVAL_FUNC_ARG_DECL); static int minus_timestampltz_intervalym(EVAL_FUNC_ARG_DECL); static int minus_timestampltz_intervalym_batch(BATCH_EVAL_FUNC_ARG_DECL); static int minus_timestampnano_intervalym(EVAL_FUNC_ARG_DECL); static int minus_timestampnano_intervalym_batch(BATCH_EVAL_FUNC_ARG_DECL); static int minus_timestamptz_intervalds(EVAL_FUNC_ARG_DECL); static int minus_timestamptz_intervalds_batch(BATCH_EVAL_FUNC_ARG_DECL); static int minus_timestamp_tiny_intervalds(EVAL_FUNC_ARG_DECL); static int minus_timestamp_tiny_intervalds_batch(BATCH_EVAL_FUNC_ARG_DECL); static int minus_timestamp_timestamp(EVAL_FUNC_ARG_DECL); static int minus_timestamp_timestamp_batch(BATCH_EVAL_FUNC_ARG_DECL); static int minus_datetime_number(EVAL_FUNC_ARG_DECL); static int minus_datetime_number_batch(BATCH_EVAL_FUNC_ARG_DECL); static int minus_datetime_datetime_oracle(EVAL_FUNC_ARG_DECL); static int minus_datetime_datetime_oracle_batch(BATCH_EVAL_FUNC_ARG_DECL); static int minus_datetime_datetime(EVAL_FUNC_ARG_DECL); static int minus_datetime_datetime_batch(BATCH_EVAL_FUNC_ARG_DECL); public: OB_INLINE static bool is_int_int_out_of_range(int64_t val1, int64_t val2, int64_t res) { // top digit: // 0 - 0 : safe // 1 - 1 : safe // 0 - 1 = 1 : overflow // 0 - 1 = 0 : safe // 1 - 0 = 1 : safe // 1 - 0 = 0 : underflow return (val1 >> SHIFT_OFFSET) != (res >>SHIFT_OFFSET) && (val2 >> SHIFT_OFFSET) == (res >> SHIFT_OFFSET); } OB_INLINE static bool is_int_uint_out_of_range(int64_t val1, uint64_t val2, uint64_t res) { // top digit: // 0 - 0 = 0 : safe // 0 - 0 = 1 : underflow // 0 - 1 : underflow // 1 - 0 : underflow // 1 - 1 : underflow return !(0 == (val1 >> SHIFT_OFFSET) && 0 == (val2 >> SHIFT_OFFSET) && 0 == (res >> SHIFT_OFFSET)); } OB_INLINE static bool is_uint_int_out_of_range(uint64_t val1, int64_t val2, uint64_t res) { // top digit: // 0 - 1 : safe // 1 - 1 = 0 : overflow // 1 - 1 = 1 : safe // 0 - 0 = 0 : safe // 0 - 0 = 1 : underflow // 0 - 1 : safe return (val1 >> SHIFT_OFFSET) == (static_cast(val2) >> SHIFT_OFFSET) && (val1 >> SHIFT_OFFSET) != (res >> SHIFT_OFFSET); } OB_INLINE static bool is_uint_uint_out_of_range(uint64_t val1, uint64_t val2, uint64_t res) { UNUSED(res); return val1 < val2; } private: static ObArithFunc minus_funcs_[common::ObMaxTC]; static ObArithFunc agg_minus_funcs_[common::ObMaxTC]; static const int64_t SHIFT_OFFSET = 63; }; // Minus expr for aggregation, different with ObExprMinus: // No overflow check for double type. class ObExprAggMinus : public ObExprMinus { public: explicit ObExprAggMinus(common::ObIAllocator &alloc) : ObExprMinus(alloc, T_OP_AGG_MINUS) { } }; } } #endif /* _OB_EXPR_MINUS_H_ */