hcq/oceanbase
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

init push

Browse Source
This commit is contained in:
oceanbase-admin
2021-05-31 22:56:52 +08:00
commit cea7de1475
7020 changed files with 5689869 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

78
src/sql/engine/expr/ob_expr_div.h Normal file
View File

@ -0,0 +1,78 @@
/**
* 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_DIV_H_
#define _OB_EXPR_DIV_H_
#include "sql/engine/expr/ob_expr_operator.h"
namespace oceanbase {
namespace sql {
class ObExprDiv : public ObArithExprOperator {
public:
ObExprDiv();
explicit ObExprDiv(common::ObIAllocator& alloc, ObExprOperatorType type = T_OP_DIV);
virtual ~ObExprDiv()
{}
virtual int calc_result_type2(
ObExprResType& type, ObExprResType& type1, ObExprResType& type2, common::ObExprTypeCtx& type_ctx) const;
virtual int calc_result2(
common::ObObj& result, const common::ObObj& left, const common::ObObj& right, common::ObExprCtx& expr_ctx) const;
static int calc(common::ObObj& res, const common::ObObj& obj1, const common::ObObj& obj2,
common::ObIAllocator* allocator, common::ObScale calc_scale);
static int calc_for_avg(common::ObObj& res, const common::ObObj& obj1, const common::ObObj& obj2,
common::ObExprCtx& expr_ctx, common::ObScale res_scale);
static int calc_for_avg(common::ObDatum& result, const common::ObDatum& sum, const int64_t count, ObEvalCtx& expr_ctx,
const common::ObObjType type);
static int div_float(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
static int div_double(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
static int div_number(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
static int div_intervalym_number(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
static int div_intervalds_number(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
virtual int cg_expr(ObExprCGCtx& op_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const override;
static int div_float(common::ObObj& res, const common::ObObj& left, const common::ObObj& right,
common::ObIAllocator* allocator, common::ObScale scale);
static int div_double(common::ObObj& res, const common::ObObj& left, const common::ObObj& right,
common::ObIAllocator* allocator, common::ObScale scale);
static int div_double_no_overflow(common::ObObj& res, const common::ObObj& left, const common::ObObj& right,
common::ObIAllocator* allocator, common::ObScale scale);
static int div_number(common::ObObj& res, const common::ObObj& left, const common::ObObj& right,
common::ObIAllocator* allocator, common::ObScale calc_scale);
static int div_interval(common::ObObj& res, const common::ObObj& left, const common::ObObj& right,
common::ObIAllocator* allocator, common::ObScale calc_scale);
static int div_float(
common::ObDatum& result, const common::ObDatum& left, const common::ObDatum& right, ObEvalCtx& ctx);
static int div_number(common::ObDatum& result, const common::ObDatum& left, const common::ObDatum& right,
ObEvalCtx& ctx, const ObExpr& expr);
DISALLOW_COPY_AND_ASSIGN(ObExprDiv);
private:
static ObArithFunc div_funcs_[common::ObMaxTC];
static ObArithFunc avg_div_funcs_[common::ObMaxTC];
static const common::ObScale DIV_CALC_SCALE;
static const common::ObScale DIV_MAX_CALC_SCALE;
};
// Div expr for aggregation, different with ObExprDiv:
// No overflow check for double type.
class ObExprAggDiv : public ObExprDiv {
public:
explicit ObExprAggDiv(common::ObIAllocator& alloc) : ObExprDiv(alloc, T_OP_AGG_DIV)
{}
};
} // namespace sql
} // namespace oceanbase
#endif /* _OB_EXPR_DIV_H_ */