566e920620
Co-authored-by: wangt1xiuyi <13547954130@163.com> Co-authored-by: yangqise7en <877793735@qq.com> Co-authored-by: Zach41 <zach_41@163.com>
58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#ifndef _OB_EXPR_UUID_SHORT_H_
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#define _OB_EXPR_UUID_SHORT_H_
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#include "sql/engine/expr/ob_expr_operator.h"
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namespace oceanbase
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{
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namespace sql
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{
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class ObExprUuidShort : public ObFuncExprOperator
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{
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public:
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explicit ObExprUuidShort(common::ObIAllocator &alloc);
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virtual ~ObExprUuidShort();
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virtual int calc_result_type0(ObExprResType &type,
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common::ObExprTypeCtx &type_ctx) const;
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virtual int cg_expr(ObExprCGCtx &expr_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const override;
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static int eval_uuid_short(const ObExpr &expr,
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ObEvalCtx &ctx,
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ObDatum &expr_datum);
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private:
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static uint64_t generate_uuid_short();
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DISALLOW_COPY_AND_ASSIGN(ObExprUuidShort) const;
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};
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inline int ObExprUuidShort::calc_result_type0(ObExprResType &type,
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common::ObExprTypeCtx &type_ctx) const
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{
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UNUSED(type_ctx);
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type.set_uint64();
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type.set_scale(common::ObAccuracy::DDL_DEFAULT_ACCURACY[common::ObUInt64Type].scale_);
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type.set_precision(common::ObAccuracy::DDL_DEFAULT_ACCURACY[common::ObUInt64Type].precision_);
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return common::OB_SUCCESS;
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}
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}
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}
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#endif /* _OB_EXPR_UUID_SHORT_H_ */
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// select uuid_short();
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