You've already forked mariadb-columnstore-engine
mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-10-31 18:30:33 +03:00
581 lines
16 KiB
C++
581 lines
16 KiB
C++
/* Copyright (C) 2014 InfiniDB, Inc.
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; version 2 of
|
|
the License.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
/****************************************************************************
|
|
* $Id: func_case.cpp 3954 2013-07-08 16:30:15Z bpaul $
|
|
*
|
|
*
|
|
****************************************************************************/
|
|
|
|
#include <string>
|
|
//#define NDEBUG
|
|
#include <cassert>
|
|
using namespace std;
|
|
|
|
#include "functor_all.h"
|
|
#include "functioncolumn.h"
|
|
#include "predicateoperator.h"
|
|
using namespace execplan;
|
|
|
|
#include "rowgroup.h"
|
|
using namespace rowgroup;
|
|
|
|
#include "errorcodes.h"
|
|
#include "idberrorinfo.h"
|
|
#include "errorids.h"
|
|
using namespace logging;
|
|
|
|
#include "utils_utf8.h"
|
|
using namespace funcexp;
|
|
|
|
namespace
|
|
{
|
|
using namespace funcexp;
|
|
|
|
inline uint64_t simple_case_cmp(Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
CalpontSystemCatalog::ColType& operationColType)
|
|
{
|
|
uint64_t i = 0; // index to the parm list
|
|
uint64_t n = parm.size() - 1; // remove expression from count of expression_i + result_i
|
|
uint64_t hasElse = n % 2; // if 1, then ELSE exist
|
|
n -= hasElse; // index to expression
|
|
|
|
switch (operationColType.colDataType)
|
|
{
|
|
case execplan::CalpontSystemCatalog::TINYINT:
|
|
case execplan::CalpontSystemCatalog::SMALLINT:
|
|
case execplan::CalpontSystemCatalog::MEDINT:
|
|
case execplan::CalpontSystemCatalog::INT:
|
|
case execplan::CalpontSystemCatalog::BIGINT:
|
|
case execplan::CalpontSystemCatalog::DATE:
|
|
case execplan::CalpontSystemCatalog::DATETIME:
|
|
{
|
|
int64_t ev = parm[n]->data()->getIntVal(row, isNull);
|
|
|
|
if (isNull)
|
|
break;
|
|
|
|
for (; i < n; i += 2)
|
|
{
|
|
if (ev == parm[i]->data()->getIntVal(row, isNull) && !isNull)
|
|
break;
|
|
else
|
|
isNull = false;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case execplan::CalpontSystemCatalog::UBIGINT:
|
|
case execplan::CalpontSystemCatalog::UINT:
|
|
case execplan::CalpontSystemCatalog::UMEDINT:
|
|
case execplan::CalpontSystemCatalog::UTINYINT:
|
|
case execplan::CalpontSystemCatalog::USMALLINT:
|
|
{
|
|
uint64_t ev = parm[n]->data()->getUintVal(row, isNull);
|
|
|
|
if (isNull)
|
|
break;
|
|
|
|
for (; i < n; i += 2)
|
|
{
|
|
if (ev == parm[i]->data()->getUintVal(row, isNull) && !isNull)
|
|
break;
|
|
else
|
|
isNull = false;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case execplan::CalpontSystemCatalog::CHAR:
|
|
case execplan::CalpontSystemCatalog::TEXT:
|
|
case execplan::CalpontSystemCatalog::VARCHAR:
|
|
{
|
|
const string& ev = parm[n]->data()->getStrVal(row, isNull);
|
|
|
|
if (isNull)
|
|
break;
|
|
|
|
for (; i < n; i += 2)
|
|
{
|
|
//BUG 5362
|
|
if (utf8::idb_strcoll(ev.c_str(), parm[i]->data()->getStrVal(row, isNull).c_str()) == 0 && !isNull)
|
|
break;
|
|
else
|
|
isNull = false;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case execplan::CalpontSystemCatalog::DECIMAL:
|
|
case execplan::CalpontSystemCatalog::UDECIMAL:
|
|
{
|
|
IDB_Decimal ev = parm[n]->data()->getDecimalVal(row, isNull);
|
|
|
|
if (isNull)
|
|
break;
|
|
|
|
for (; i < n; i += 2)
|
|
{
|
|
if (ev == parm[i]->data()->getDecimalVal(row, isNull) && !isNull)
|
|
break;
|
|
else
|
|
isNull = false;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case execplan::CalpontSystemCatalog::DOUBLE:
|
|
case execplan::CalpontSystemCatalog::UDOUBLE:
|
|
{
|
|
double ev = parm[n]->data()->getDoubleVal(row, isNull);
|
|
|
|
if (isNull)
|
|
break;
|
|
|
|
for (; i < n; i += 2)
|
|
{
|
|
if (ev == parm[i]->data()->getDoubleVal(row, isNull) && !isNull)
|
|
break;
|
|
else
|
|
isNull = false;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case execplan::CalpontSystemCatalog::FLOAT:
|
|
case execplan::CalpontSystemCatalog::UFLOAT:
|
|
{
|
|
float ev = parm[n]->data()->getFloatVal(row, isNull);
|
|
|
|
if (isNull)
|
|
break;
|
|
|
|
for (; i < n; i += 2)
|
|
{
|
|
if (ev == parm[i]->data()->getFloatVal(row, isNull) && !isNull)
|
|
break;
|
|
else
|
|
isNull = false;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
default:
|
|
{
|
|
std::ostringstream oss;
|
|
oss << "case: datatype of " << execplan::colDataTypeToString(operationColType.colDataType);
|
|
throw logging::IDBExcept(oss.str(), ERR_DATATYPE_NOT_SUPPORT);
|
|
}
|
|
}
|
|
|
|
if (i == n && !hasElse)
|
|
isNull = true;
|
|
else if (isNull && hasElse)
|
|
// BUG 5110. Only way we can exit above with isNull == true is when ev is NULL
|
|
// if so and we have else condition we need to use it by setting i = n
|
|
{
|
|
i = n;
|
|
isNull = false;
|
|
}
|
|
|
|
|
|
return i;
|
|
}
|
|
|
|
|
|
inline uint64_t searched_case_cmp(Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull)
|
|
{
|
|
uint64_t i = 0; // index to the parm list
|
|
uint64_t n = parm.size(); // count of boolean_expression_i + result_i
|
|
uint64_t hasElse = n % 2; // if 1, then ELSE exist
|
|
n -= hasElse; // index to expression
|
|
|
|
for (; i < n; i += 2)
|
|
{
|
|
if (parm[i]->getBoolVal(row, isNull))
|
|
break;
|
|
}
|
|
|
|
isNull = false;
|
|
|
|
if (i == n && !hasElse)
|
|
isNull = true;
|
|
|
|
return (i == n ? i - 1 : i);
|
|
}
|
|
|
|
|
|
CalpontSystemCatalog::ColType caseOperationType(FunctionParm& fp,
|
|
CalpontSystemCatalog::ColType& resultType,
|
|
bool simpleCase)
|
|
{
|
|
// ... expression_i + result_i + ... [[expression] + result_N]
|
|
FunctionParm::size_type n = fp.size();
|
|
|
|
if (simpleCase) // simple case has an expression
|
|
n -= 1; // remove expression from count of expression_i + result_i
|
|
|
|
bool hasElse = ((n % 2) != 0); // if 1, then ELSE exist
|
|
|
|
if (hasElse)
|
|
--n; // n now is an even number
|
|
|
|
idbassert((n % 2) == 0);
|
|
|
|
bool allStringO = true;
|
|
bool allStringR = true;
|
|
|
|
FunctionParm::size_type l = fp.size() - 1; // last fp index
|
|
idbassert(fp[l]->data());
|
|
CalpontSystemCatalog::ColType oct = fp[l]->data()->resultType();
|
|
CalpontSystemCatalog::ColType rct = resultType;
|
|
bool operation = true;
|
|
|
|
for (uint64_t i = 0; i <= n; i++)
|
|
{
|
|
// operation or result type
|
|
operation = ((i % 2) == 0);
|
|
|
|
// the result type of ELSE, if exists.
|
|
if (i == n)
|
|
{
|
|
if (!hasElse)
|
|
break;
|
|
|
|
if (simpleCase)
|
|
{
|
|
// the case expression
|
|
if (fp[i]->data()->resultType().colDataType != CalpontSystemCatalog::CHAR &&
|
|
fp[i]->data()->resultType().colDataType != CalpontSystemCatalog::TEXT &&
|
|
fp[i]->data()->resultType().colDataType != CalpontSystemCatalog::VARCHAR)
|
|
{
|
|
PredicateOperator op;
|
|
op.setOpType(oct, fp[i]->data()->resultType());
|
|
allStringO = false;
|
|
oct = op.operationType();
|
|
}
|
|
|
|
i += 1;
|
|
}
|
|
|
|
operation = false;
|
|
}
|
|
|
|
if (fp[i]->data()->resultType().colDataType != CalpontSystemCatalog::CHAR &&
|
|
fp[i]->data()->resultType().colDataType != CalpontSystemCatalog::TEXT &&
|
|
fp[i]->data()->resultType().colDataType != CalpontSystemCatalog::VARCHAR)
|
|
{
|
|
// this is not a string column
|
|
PredicateOperator op;
|
|
|
|
if (operation)
|
|
{
|
|
op.setOpType(oct, fp[i]->data()->resultType());
|
|
allStringO = false;
|
|
oct = op.operationType();
|
|
}
|
|
|
|
// If any parm is of string type, the result type should be string. (same as if)
|
|
else if (rct.colDataType != CalpontSystemCatalog::CHAR &&
|
|
rct.colDataType != CalpontSystemCatalog::TEXT &&
|
|
rct.colDataType != CalpontSystemCatalog::VARCHAR)
|
|
{
|
|
op.setOpType(rct, fp[i]->data()->resultType());
|
|
allStringR = false;
|
|
rct = op.operationType();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// this is a string
|
|
// If any parm is of string type, the result type should be string. (same as if)
|
|
allStringR = true;
|
|
}
|
|
}
|
|
|
|
if (allStringO)
|
|
{
|
|
oct.colDataType = CalpontSystemCatalog::VARCHAR;
|
|
oct.colWidth = 255;
|
|
}
|
|
|
|
if (allStringR)
|
|
{
|
|
rct.colDataType = CalpontSystemCatalog::VARCHAR;
|
|
rct.colWidth = 255;
|
|
}
|
|
|
|
if (rct.scale != 0 && rct.colDataType == CalpontSystemCatalog::BIGINT)
|
|
rct.colDataType = CalpontSystemCatalog::DECIMAL;
|
|
|
|
if (oct.scale != 0 && oct.colDataType == CalpontSystemCatalog::BIGINT)
|
|
oct.colDataType = CalpontSystemCatalog::DECIMAL;
|
|
|
|
resultType = rct;
|
|
return oct;
|
|
}
|
|
|
|
}
|
|
|
|
namespace funcexp
|
|
{
|
|
|
|
// simple CASE:
|
|
// SELECT CASE ("expression")
|
|
// WHEN "condition1" THEN "result1"
|
|
// WHEN "condition2" THEN "result2"
|
|
// ...
|
|
// [ELSE "resultN"]
|
|
// END
|
|
//
|
|
// simple CASE parm order:
|
|
// expression1 result1 expression2 result2 ... expression [resultN]
|
|
//
|
|
|
|
CalpontSystemCatalog::ColType Func_simple_case::operationType(FunctionParm& fp, CalpontSystemCatalog::ColType& resultType)
|
|
{
|
|
return caseOperationType(fp, resultType, true);
|
|
}
|
|
|
|
|
|
bool Func_simple_case::getBoolVal(Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
CalpontSystemCatalog::ColType& operationColType)
|
|
{
|
|
uint64_t i = simple_case_cmp(row, parm, isNull, operationColType);
|
|
|
|
if (isNull)
|
|
return joblist::BIGINTNULL;
|
|
|
|
return parm[i + 1]->data()->getBoolVal(row, isNull);
|
|
}
|
|
|
|
|
|
int64_t Func_simple_case::getIntVal(Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
CalpontSystemCatalog::ColType& operationColType)
|
|
{
|
|
uint64_t i = simple_case_cmp(row, parm, isNull, operationColType);
|
|
|
|
if (isNull)
|
|
return joblist::BIGINTNULL;
|
|
|
|
return parm[i + 1]->data()->getIntVal(row, isNull);
|
|
}
|
|
|
|
|
|
string Func_simple_case::getStrVal(Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
CalpontSystemCatalog::ColType& operationColType)
|
|
{
|
|
uint64_t i = simple_case_cmp(row, parm, isNull, operationColType);
|
|
|
|
if (isNull)
|
|
return string("");
|
|
|
|
return parm[i + 1]->data()->getStrVal(row, isNull);
|
|
}
|
|
|
|
|
|
IDB_Decimal Func_simple_case::getDecimalVal(Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
CalpontSystemCatalog::ColType& operationColType)
|
|
{
|
|
uint64_t i = simple_case_cmp(row, parm, isNull, operationColType);
|
|
|
|
if (isNull)
|
|
return IDB_Decimal(); // need a null value for IDB_Decimal??
|
|
|
|
return parm[i + 1]->data()->getDecimalVal(row, isNull);
|
|
}
|
|
|
|
|
|
double Func_simple_case::getDoubleVal(Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
CalpontSystemCatalog::ColType& operationColType)
|
|
{
|
|
uint64_t i = simple_case_cmp(row, parm, isNull, operationColType);
|
|
|
|
if (isNull)
|
|
return doubleNullVal();
|
|
|
|
return parm[i + 1]->data()->getDoubleVal(row, isNull);
|
|
}
|
|
|
|
|
|
int32_t Func_simple_case::getDateIntVal(rowgroup::Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
execplan::CalpontSystemCatalog::ColType& op_ct)
|
|
{
|
|
uint64_t i = simple_case_cmp(row, parm, isNull, op_ct);
|
|
|
|
if (isNull)
|
|
return joblist::DATENULL;
|
|
|
|
return parm[i + 1]->data()->getDateIntVal(row, isNull);
|
|
}
|
|
|
|
|
|
int64_t Func_simple_case::getDatetimeIntVal(rowgroup::Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
execplan::CalpontSystemCatalog::ColType& op_ct)
|
|
{
|
|
uint64_t i = simple_case_cmp(row, parm, isNull, op_ct);
|
|
|
|
if (isNull)
|
|
return joblist::DATETIMENULL;
|
|
|
|
return parm[i + 1]->data()->getDatetimeIntVal(row, isNull);
|
|
}
|
|
|
|
|
|
|
|
// searched CASE:
|
|
// SELECT CASE
|
|
// WHEN "boolean_expression1" THEN "result1"
|
|
// WHEN "boolean_expression2" THEN "result2"
|
|
// ...
|
|
// [ELSE "resultN"]
|
|
// END
|
|
//
|
|
// searched CASE parm order:
|
|
// boolean_expression1 result1 boolean_expression2 result2 ... [resultN]
|
|
//
|
|
CalpontSystemCatalog::ColType Func_searched_case::operationType(FunctionParm& fp, CalpontSystemCatalog::ColType& resultType)
|
|
{
|
|
// operation type not used by this functor.
|
|
// return fp[1]->data()->resultType();
|
|
return caseOperationType(fp, resultType, false);
|
|
}
|
|
|
|
bool Func_searched_case::getBoolVal(Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
CalpontSystemCatalog::ColType&)
|
|
{
|
|
uint64_t i = searched_case_cmp(row, parm, isNull);
|
|
|
|
if (isNull)
|
|
return joblist::BIGINTNULL;
|
|
|
|
return parm[i + 1]->data()->getBoolVal(row, isNull);
|
|
}
|
|
|
|
int64_t Func_searched_case::getIntVal(Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
CalpontSystemCatalog::ColType&)
|
|
{
|
|
uint64_t i = searched_case_cmp(row, parm, isNull);
|
|
|
|
if (isNull)
|
|
return joblist::BIGINTNULL;
|
|
|
|
return parm[i + 1]->data()->getIntVal(row, isNull);
|
|
}
|
|
|
|
|
|
string Func_searched_case::getStrVal(Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
CalpontSystemCatalog::ColType&)
|
|
{
|
|
uint64_t i = searched_case_cmp(row, parm, isNull);
|
|
|
|
if (isNull)
|
|
return string("");
|
|
|
|
return parm[i + 1]->data()->getStrVal(row, isNull);
|
|
}
|
|
|
|
|
|
IDB_Decimal Func_searched_case::getDecimalVal(Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
CalpontSystemCatalog::ColType&)
|
|
{
|
|
uint64_t i = searched_case_cmp(row, parm, isNull);
|
|
|
|
if (isNull)
|
|
return IDB_Decimal(); // need a null value for IDB_Decimal??
|
|
|
|
return parm[i + 1]->data()->getDecimalVal(row, isNull);
|
|
}
|
|
|
|
|
|
double Func_searched_case::getDoubleVal(Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
CalpontSystemCatalog::ColType&)
|
|
{
|
|
uint64_t i = searched_case_cmp(row, parm, isNull);
|
|
|
|
if (isNull)
|
|
return doubleNullVal();
|
|
|
|
return parm[i + 1]->data()->getDoubleVal(row, isNull);
|
|
}
|
|
|
|
|
|
int32_t Func_searched_case::getDateIntVal(rowgroup::Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
execplan::CalpontSystemCatalog::ColType& op_ct)
|
|
{
|
|
uint64_t i = simple_case_cmp(row, parm, isNull, op_ct);
|
|
|
|
if (isNull)
|
|
return joblist::DATENULL;
|
|
|
|
return parm[i + 1]->data()->getDateIntVal(row, isNull);
|
|
}
|
|
|
|
|
|
int64_t Func_searched_case::getDatetimeIntVal(rowgroup::Row& row,
|
|
FunctionParm& parm,
|
|
bool& isNull,
|
|
execplan::CalpontSystemCatalog::ColType& op_ct)
|
|
{
|
|
uint64_t i = simple_case_cmp(row, parm, isNull, op_ct);
|
|
|
|
if (isNull)
|
|
return joblist::DATETIMENULL;
|
|
|
|
return parm[i + 1]->data()->getDatetimeIntVal(row, isNull);
|
|
}
|
|
|
|
|
|
} // namespace funcexp
|
|
// vim:ts=4 sw=4:
|