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719 lines
19 KiB
C++
719 lines
19 KiB
C++
/* Copyright (C) 2014 InfiniDB, Inc.
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Copyright (C) 2016 MariaDB Corporaton
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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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as published by the Free Software Foundation; version 2 of
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the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/****************************************************************************
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* $Id: func_nullif.cpp 2485 2011-04-05 19:01:13Z zzhu $
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*
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*
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****************************************************************************/
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#include <cstdlib>
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#include <string>
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#include <sstream>
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using namespace std;
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#include "functor_all.h"
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#include "functioncolumn.h"
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#include "rowgroup.h"
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using namespace execplan;
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#include "rowgroup.h"
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using namespace rowgroup;
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#include "errorcodes.h"
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#include "idberrorinfo.h"
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#include "errorids.h"
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using namespace logging;
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using namespace dataconvert;
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#include "funchelpers.h"
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#include "utils_utf8.h"
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using namespace funcexp;
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namespace funcexp
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{
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CalpontSystemCatalog::ColType Func_nullif::operationType( FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
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{
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return resultType;
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}
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int64_t Func_nullif::getIntVal(rowgroup::Row& row,
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FunctionParm& parm,
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bool& isNull,
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execplan::CalpontSystemCatalog::ColType& op_ct)
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{
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int64_t exp1 = parm[0]->data()->getIntVal(row, isNull);
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int64_t exp2 = 0;
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switch (parm[1]->data()->resultType().colDataType)
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{
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case execplan::CalpontSystemCatalog::BIGINT:
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case execplan::CalpontSystemCatalog::INT:
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case execplan::CalpontSystemCatalog::MEDINT:
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case execplan::CalpontSystemCatalog::TINYINT:
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case execplan::CalpontSystemCatalog::SMALLINT:
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case execplan::CalpontSystemCatalog::DOUBLE:
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case execplan::CalpontSystemCatalog::FLOAT:
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case execplan::CalpontSystemCatalog::DECIMAL:
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case execplan::CalpontSystemCatalog::UDECIMAL:
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case execplan::CalpontSystemCatalog::VARCHAR:
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case execplan::CalpontSystemCatalog::CHAR:
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case execplan::CalpontSystemCatalog::TEXT:
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{
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exp2 = parm[1]->data()->getIntVal(row, isNull);
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if (isNull)
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{
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isNull = false;
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return exp1;
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}
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break;
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}
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case execplan::CalpontSystemCatalog::UBIGINT:
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case execplan::CalpontSystemCatalog::UINT:
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case execplan::CalpontSystemCatalog::UMEDINT:
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case execplan::CalpontSystemCatalog::UTINYINT:
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case execplan::CalpontSystemCatalog::USMALLINT:
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{
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exp2 = parm[1]->data()->getUintVal(row, isNull);
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break;
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}
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case execplan::CalpontSystemCatalog::DATE:
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{
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if (parm[0]->data()->resultType().colDataType ==
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execplan::CalpontSystemCatalog::DATETIME)
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{
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// NULLIF arg0 is DATETIME, arg1 is DATE,
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// Upgrade arg1 to datetime
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exp2 = parm[1]->data()->getDatetimeIntVal(row, isNull);
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}
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else
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{
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// NULLIF arg0 is not DATETIME (might be date), arg1 is not DATE
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// Use arg1 as DATE
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exp2 = parm[1]->data()->getDateIntVal(row, isNull);
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}
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if (isNull)
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{
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isNull = false;
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return exp1;
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}
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break;
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}
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break;
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case execplan::CalpontSystemCatalog::DATETIME:
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{
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exp2 = parm[1]->data()->getDatetimeIntVal(row, isNull);
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if (parm[0]->data()->resultType().colDataType ==
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execplan::CalpontSystemCatalog::DATE)
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{
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// NULLIF arg0 is DATE, arg1 is DATETIME,
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// Upgrade arg1 to datetime
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// When comparing exp1 as a Date, we can't simply promote. We have
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// to be careful of the return value in case of not null return.
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int64_t exp1 = parm[0]->data()->getDatetimeIntVal(row, isNull);
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if ( exp1 == exp2 )
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{
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isNull = true;
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return 0;
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}
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// since exp1 here is inside the block, when we leave the block, the
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// original (Date) value is restored.
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}
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if (isNull)
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{
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isNull = false;
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return exp1;
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}
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break;
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}
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default:
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{
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isNull = true;
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}
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}
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if ( exp1 == exp2 )
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{
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isNull = true;
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return 0;
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}
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return exp1;
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}
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uint64_t Func_nullif::getUintVal(rowgroup::Row& row,
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FunctionParm& parm,
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bool& isNull,
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execplan::CalpontSystemCatalog::ColType& op_ct)
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{
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uint64_t exp1 = parm[0]->data()->getUintVal(row, isNull);
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uint64_t exp2 = 0;
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switch (parm[1]->data()->resultType().colDataType)
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{
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case execplan::CalpontSystemCatalog::BIGINT:
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case execplan::CalpontSystemCatalog::INT:
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case execplan::CalpontSystemCatalog::MEDINT:
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case execplan::CalpontSystemCatalog::TINYINT:
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case execplan::CalpontSystemCatalog::SMALLINT:
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case execplan::CalpontSystemCatalog::DOUBLE:
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case execplan::CalpontSystemCatalog::UDOUBLE:
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case execplan::CalpontSystemCatalog::FLOAT:
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case execplan::CalpontSystemCatalog::UFLOAT:
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case execplan::CalpontSystemCatalog::DECIMAL:
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case execplan::CalpontSystemCatalog::UDECIMAL:
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case execplan::CalpontSystemCatalog::VARCHAR:
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case execplan::CalpontSystemCatalog::CHAR:
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case execplan::CalpontSystemCatalog::TEXT:
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{
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int64_t iexp2 = parm[1]->data()->getIntVal(row, isNull);
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if (isNull || iexp2 < 0)
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{
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isNull = false;
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return exp1;
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}
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exp2 = iexp2;
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break;
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}
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case execplan::CalpontSystemCatalog::UBIGINT:
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case execplan::CalpontSystemCatalog::UINT:
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case execplan::CalpontSystemCatalog::UMEDINT:
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case execplan::CalpontSystemCatalog::UTINYINT:
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case execplan::CalpontSystemCatalog::USMALLINT:
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{
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exp2 = parm[1]->data()->getUintVal(row, isNull);
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break;
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}
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case execplan::CalpontSystemCatalog::DATE:
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{
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exp2 = parm[1]->data()->getDateIntVal(row, isNull);
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if (isNull)
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{
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isNull = false;
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return exp1;
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}
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break;
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}
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break;
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case execplan::CalpontSystemCatalog::DATETIME:
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{
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exp2 = parm[1]->data()->getDatetimeIntVal(row, isNull);
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if (isNull)
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{
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isNull = false;
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return exp1;
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}
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break;
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}
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default:
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{
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isNull = true;
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}
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}
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if ( exp1 == exp2 )
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{
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isNull = true;
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return 0;
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}
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return exp1;
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}
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string Func_nullif::getStrVal(rowgroup::Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& op_ct)
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{
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string exp1 = parm[0]->data()->getStrVal(row, isNull);
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if (isNull)
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{
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isNull = false;
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return "";
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}
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string exp2 = parm[1]->data()->getStrVal(row, isNull);
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if (isNull)
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{
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isNull = false;
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return exp1;
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}
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int datatype0 = parm[0]->data()->resultType().colDataType;
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int datatype1 = parm[1]->data()->resultType().colDataType;
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if ( datatype0 == execplan::CalpontSystemCatalog::DATE &&
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datatype1 == execplan::CalpontSystemCatalog::DATETIME )
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{
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exp1 = exp1 + " 00:00:00";
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}
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if ( datatype1 == execplan::CalpontSystemCatalog::DATE &&
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datatype0 == execplan::CalpontSystemCatalog::DATETIME )
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{
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exp2 = exp2 + " 00:00:00";
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}
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if ( utf8::idb_strcoll(exp1.c_str(), exp2.c_str()) == 0 )
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{
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isNull = true;
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return "";
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}
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return parm[0]->data()->getStrVal(row, isNull);
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}
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int32_t Func_nullif::getDateIntVal(rowgroup::Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& ct)
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{
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int64_t exp1 = parm[0]->data()->getDateIntVal(row, isNull);
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int64_t exp2 = 0;
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switch (parm[1]->data()->resultType().colDataType)
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{
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case execplan::CalpontSystemCatalog::BIGINT:
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case execplan::CalpontSystemCatalog::INT:
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case execplan::CalpontSystemCatalog::MEDINT:
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case execplan::CalpontSystemCatalog::TINYINT:
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case execplan::CalpontSystemCatalog::SMALLINT:
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case execplan::CalpontSystemCatalog::DOUBLE:
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case execplan::CalpontSystemCatalog::FLOAT:
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case execplan::CalpontSystemCatalog::DECIMAL:
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case execplan::CalpontSystemCatalog::VARCHAR:
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case execplan::CalpontSystemCatalog::CHAR:
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case execplan::CalpontSystemCatalog::TEXT:
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{
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exp2 = parm[1]->data()->getIntVal(row, isNull);
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if (isNull)
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{
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isNull = false;
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return exp1;
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}
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break;
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}
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case execplan::CalpontSystemCatalog::DATE:
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{
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exp2 = parm[1]->data()->getDateIntVal(row, isNull);
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if (isNull)
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{
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isNull = false;
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return exp1;
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}
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break;
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}
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break;
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case execplan::CalpontSystemCatalog::DATETIME:
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{
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exp2 = parm[1]->data()->getDatetimeIntVal(row, isNull);
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if (isNull)
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{
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isNull = false;
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return exp1;
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}
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break;
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}
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default:
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{
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isNull = true;
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}
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}
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if ( exp1 == exp2 )
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{
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isNull = true;
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return 0;
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}
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return exp1;
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}
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int64_t Func_nullif::getDatetimeIntVal(rowgroup::Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& ct)
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{
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int64_t exp1 = parm[0]->data()->getDatetimeIntVal(row, isNull);
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int64_t exp2 = 0;
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switch (parm[1]->data()->resultType().colDataType)
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{
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case execplan::CalpontSystemCatalog::BIGINT:
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case execplan::CalpontSystemCatalog::INT:
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case execplan::CalpontSystemCatalog::MEDINT:
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case execplan::CalpontSystemCatalog::TINYINT:
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case execplan::CalpontSystemCatalog::SMALLINT:
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case execplan::CalpontSystemCatalog::DOUBLE:
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case execplan::CalpontSystemCatalog::FLOAT:
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case execplan::CalpontSystemCatalog::DECIMAL:
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case execplan::CalpontSystemCatalog::VARCHAR:
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case execplan::CalpontSystemCatalog::CHAR:
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case execplan::CalpontSystemCatalog::TEXT:
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{
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exp2 = parm[1]->data()->getIntVal(row, isNull);
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if (isNull)
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{
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isNull = false;
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return exp1;
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}
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break;
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}
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case execplan::CalpontSystemCatalog::DATE:
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{
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// Upgrade to datetime for proper comparison
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exp2 = parm[1]->data()->getDatetimeIntVal(row, isNull);
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if (isNull)
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{
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isNull = false;
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return exp1;
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}
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break;
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}
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break;
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case execplan::CalpontSystemCatalog::DATETIME:
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{
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exp2 = parm[1]->data()->getDatetimeIntVal(row, isNull);
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if (isNull)
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{
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isNull = false;
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return exp1;
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}
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break;
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}
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default:
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{
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isNull = true;
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}
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}
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if ( exp1 == exp2 )
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{
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isNull = true;
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return 0;
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}
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return exp1;
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}
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double Func_nullif::getDoubleVal(rowgroup::Row& row,
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FunctionParm& parm,
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bool& isNull,
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execplan::CalpontSystemCatalog::ColType& op_ct)
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{
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double exp1 = parm[0]->data()->getDoubleVal(row, isNull);
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double exp2 = 0;
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switch (parm[1]->data()->resultType().colDataType)
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{
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case execplan::CalpontSystemCatalog::BIGINT:
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case execplan::CalpontSystemCatalog::INT:
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case execplan::CalpontSystemCatalog::MEDINT:
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case execplan::CalpontSystemCatalog::TINYINT:
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case execplan::CalpontSystemCatalog::SMALLINT:
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case execplan::CalpontSystemCatalog::DOUBLE:
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case execplan::CalpontSystemCatalog::FLOAT:
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case execplan::CalpontSystemCatalog::DECIMAL:
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case execplan::CalpontSystemCatalog::VARCHAR:
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case execplan::CalpontSystemCatalog::CHAR:
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case execplan::CalpontSystemCatalog::TEXT:
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{
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exp2 = parm[1]->data()->getDoubleVal(row, isNull);
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if (isNull)
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{
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isNull = false;
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return exp1;
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}
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break;
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}
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case execplan::CalpontSystemCatalog::DATE:
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{
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exp2 = parm[1]->data()->getDateIntVal(row, isNull);
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|
|
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if (isNull)
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{
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isNull = false;
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return exp1;
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}
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|
|
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break;
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}
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break;
|
|
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case execplan::CalpontSystemCatalog::DATETIME:
|
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{
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exp2 = parm[1]->data()->getDatetimeIntVal(row, isNull);
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|
|
|
if (isNull)
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{
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isNull = false;
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return exp1;
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|
}
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|
|
|
break;
|
|
}
|
|
|
|
default:
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{
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isNull = true;
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|
}
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}
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|
|
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if ( exp1 == exp2 )
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{
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isNull = true;
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return 0;
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}
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return exp1;
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}
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|
|
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|
execplan::IDB_Decimal Func_nullif::getDecimalVal(rowgroup::Row& row,
|
|
FunctionParm& parm,
|
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bool& isNull,
|
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execplan::CalpontSystemCatalog::ColType& op_ct)
|
|
{
|
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IDB_Decimal exp1 = parm[0]->data()->getDecimalVal(row, isNull);
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IDB_Decimal exp2;
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switch (parm[1]->data()->resultType().colDataType)
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|
{
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|
case execplan::CalpontSystemCatalog::BIGINT:
|
|
case execplan::CalpontSystemCatalog::INT:
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|
case execplan::CalpontSystemCatalog::MEDINT:
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|
case execplan::CalpontSystemCatalog::TINYINT:
|
|
case execplan::CalpontSystemCatalog::SMALLINT:
|
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case execplan::CalpontSystemCatalog::UBIGINT:
|
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case execplan::CalpontSystemCatalog::UINT:
|
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case execplan::CalpontSystemCatalog::UMEDINT:
|
|
case execplan::CalpontSystemCatalog::UTINYINT:
|
|
case execplan::CalpontSystemCatalog::USMALLINT:
|
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case execplan::CalpontSystemCatalog::DECIMAL:
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case execplan::CalpontSystemCatalog::UDECIMAL:
|
|
{
|
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exp2 = parm[1]->data()->getDecimalVal(row, isNull);
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|
|
|
if (isNull)
|
|
{
|
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isNull = false;
|
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return exp1;
|
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}
|
|
}
|
|
break;
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|
|
case execplan::CalpontSystemCatalog::VARCHAR:
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|
case execplan::CalpontSystemCatalog::CHAR:
|
|
case execplan::CalpontSystemCatalog::TEXT:
|
|
{
|
|
int64_t value = parm[1]->data()->getIntVal(row, isNull);
|
|
|
|
if (isNull)
|
|
{
|
|
isNull = false;
|
|
return exp1;
|
|
}
|
|
|
|
exp2.value = value;
|
|
exp2.scale = 0;
|
|
}
|
|
|
|
case execplan::CalpontSystemCatalog::DOUBLE:
|
|
case execplan::CalpontSystemCatalog::UDOUBLE:
|
|
case execplan::CalpontSystemCatalog::FLOAT:
|
|
case execplan::CalpontSystemCatalog::UFLOAT:
|
|
{
|
|
double value = parm[1]->data()->getDoubleVal(row, isNull);
|
|
|
|
if (isNull)
|
|
{
|
|
isNull = false;
|
|
return exp1;
|
|
}
|
|
|
|
exp2.value = (int64_t) value;
|
|
exp2.scale = 0;
|
|
}
|
|
break;
|
|
|
|
case execplan::CalpontSystemCatalog::DATE:
|
|
{
|
|
int32_t s = 0;
|
|
int64_t x = 0;
|
|
|
|
string value = DataConvert::dateToString1(parm[1]->data()->getDateIntVal(row, isNull));
|
|
|
|
if (!isNull)
|
|
{
|
|
x = atoll(value.c_str());
|
|
|
|
if ( s > 11 )
|
|
s = 0;
|
|
|
|
if ( s > 0 )
|
|
{
|
|
x *= helpers::powerOf10_c[s];
|
|
}
|
|
else if (s < 0)
|
|
{
|
|
s = -s;
|
|
|
|
if ( s >= (int32_t) value.size() )
|
|
{
|
|
x = 0;
|
|
}
|
|
else
|
|
{
|
|
x /= helpers::powerOf10_c[s];
|
|
x *= helpers::powerOf10_c[s];
|
|
}
|
|
|
|
s = 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
isNull = false;
|
|
return exp1;
|
|
}
|
|
|
|
exp2.value = x;
|
|
exp2.scale = s;
|
|
}
|
|
break;
|
|
|
|
case execplan::CalpontSystemCatalog::DATETIME:
|
|
{
|
|
int32_t s = 0;
|
|
int64_t x = 0;
|
|
|
|
string value =
|
|
DataConvert::datetimeToString1(parm[1]->data()->getDatetimeIntVal(row, isNull));
|
|
|
|
if (!isNull)
|
|
{
|
|
//strip off micro seconds
|
|
value = value.substr(0, 14);
|
|
int64_t x = atoll(value.c_str());
|
|
|
|
if ( s > 5 )
|
|
s = 0;
|
|
|
|
if ( s > 0 )
|
|
{
|
|
x *= helpers::powerOf10_c[s];
|
|
}
|
|
else if (s < 0)
|
|
{
|
|
s = -s;
|
|
|
|
if ( s >= (int32_t) value.size() )
|
|
{
|
|
x = 0;
|
|
}
|
|
else
|
|
{
|
|
x /= helpers::powerOf10_c[s];
|
|
x *= helpers::powerOf10_c[s];
|
|
}
|
|
|
|
s = 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
isNull = false;
|
|
return exp1;
|
|
}
|
|
|
|
exp2.value = x;
|
|
exp2.scale = s;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
{
|
|
std::ostringstream oss;
|
|
oss << "truncate: datatype of " << execplan::colDataTypeToString(op_ct.colDataType);
|
|
throw logging::IDBExcept(oss.str(), ERR_DATATYPE_NOT_SUPPORT);
|
|
}
|
|
}
|
|
|
|
if ( exp1 == exp2 )
|
|
{
|
|
isNull = true;
|
|
IDB_Decimal decimal;
|
|
decimal.value = 0;
|
|
decimal.scale = 0;
|
|
return decimal;
|
|
}
|
|
|
|
return exp1;
|
|
}
|
|
|
|
|
|
} // namespace funcexp
|
|
// vim:ts=4 sw=4:
|