68 lines
1.6 KiB
C++
68 lines
1.6 KiB
C++
/*
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* Copyright 2014-2021 Alibaba Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* ob_expr_any_value.cpp is for any_value function
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*
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* Date: 2021/7/9
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*
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* Authors:
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* ailing.lcq<ailing.lcq@alibaba-inc.com>
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*
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*/
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#include "sql/engine/expr/ob_expr_any_value.h"
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using namespace oceanbase::common;
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namespace oceanbase {
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namespace sql {
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ObExprAnyValue::ObExprAnyValue(ObIAllocator &alloc)
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: ObFuncExprOperator(alloc, T_FUN_SYS_ANY_VALUE, N_ANY_VAL, 1, NOT_ROW_DIMENSION)
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{}
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ObExprAnyValue::~ObExprAnyValue()
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{}
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int ObExprAnyValue::calc_result_type1(ObExprResType &type, ObExprResType &arg, common::ObExprTypeCtx &) const
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{
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int ret = OB_SUCCESS;
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type = arg;
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return ret;
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}
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int ObExprAnyValue::calc_result1(common::ObObj &result, const common::ObObj &arg, common::ObExprCtx &expr_ctx) const
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{
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UNUSED(expr_ctx);
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int ret = OB_SUCCESS;
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result = arg;
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return ret;
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}
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int ObExprAnyValue::cg_expr(ObExprCGCtx &expr_cg_ctx, const ObRawExpr &raw_expr, ObExpr &rt_expr) const
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{
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UNUSED(raw_expr);
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UNUSED(expr_cg_ctx);
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rt_expr.eval_func_ = ObExprAnyValue::eval_any_value;
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return OB_SUCCESS;
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}
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int ObExprAnyValue::eval_any_value(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum)
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{
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int ret = OB_SUCCESS;
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ObDatum *arg = NULL;
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if (OB_FAIL(expr.eval_param_value(ctx, arg))) {
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SERVER_LOG(WARN, "expr evaluate parameter failed", K(ret));
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} else {
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expr_datum.set_datum(*arg);
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}
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return ret;
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}
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} // namespace sql
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} // namespace oceanbase
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