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mariadb-columnstore-engine/utils/funcexp/func_nullif.cpp
Alexander Barkov 9608533d92 MCOL-4734 Compilation failure: MariaDB-10.6 + ColumnStore-develop 
mcsconfig.h and my_config.h have the following
pre-processor definitions:

1. Conflicting definitions coming from the standard cmake definitions:
- PACKAGE
- PACKAGE_BUGREPORT
- PACKAGE_NAME
- PACKAGE_STRING
- PACKAGE_TARNAME
- PACKAGE_VERSION
- VERSION

2. Conflicting definitions of other kinds:
- HAVE_STRTOLL - this is a dirt in MariaDB headers.
  Should be fixed in the server code. my_config.h erroneously
  performs "#define HAVE_STRTOLL" instead of "#define HAVE_STRTOLL 1".
  in some cases. The former is not CMake compatible style. The latter is.

3. Non-conflicting definitions:
  Otherwise, mcsconfig.h and my_config.h should be mutually compatible,
  because both are generated by cmake on the same host machine. So
  they should have exactly equal definitions like "HAVE_XXX", "SIZEOF_XXX", etc.

Observations:
- It's OK to include both mcsconfig.h and my_config.h providing that we
  suppress duplicate definition of the above conflicting types #1 and #2.
- There is no a need to suppress duplicate definitions mentioned in #3,
  as they are compatible!
- my_sys.h and m_ctype.h must always follow a CMake configuation header,
  either my_config.h or mcsconfig.h (or both).
  They must never be included without any preceeding configuration header.

This change make sure that we resolve conflicts by:
- either disallowing inclusion of mcsconfig.h and my_config.h
  at the same time
- or by hiding conflicting definitions #1 and #2
  (with their later restoring).
- also, by making sure that my_sys.h and m_ctype.h always follow
  a CMake configuration file.

Details:
- idb_mysql.h can now only be included only after my_config.h
  An attempt to use idb_mysql.h with mcsconfig.h instead of
  my_config.h is caught by the "#error" preprocessor directive.

- mariadb_my_sys.h can now be only included after mcsconfig.h.
  An attempt to use mariadb_my_sys.h without mcscofig.h
  (e.g. with my_config.h) is also caught by "#error".

- collation.h now can now be included in two ways.
  It now has the following effective structure:

    #if defined(PREFER_MY_CONFIG_H) && defined(MY_CONFIG_H)
    //  Remember current conflicting definitions on the preprocessor stack
    //  Undefine current conflicting definitions
    #endif
    #include "mcsconfig.h"
    #include "m_ctype.h"
    #if defined(PREFER_MY_CONFIG_H) && defined(MY_CONFIG_H)
    #    Restore conflicting definitions from the preprocessor stack
    #endif

  and can be included as follows:

  a. using only mcsconfig.h as a configuration header:

    // my_config.h must not be included so far
    #include "collation.h"

  b. using my_config.h as the first included configuration file:

    #define PREFER_MY_CONFIG_H // Force conflict resolution
    #include "my_config.h"     // can be included directly or indirectly
    ...
    #include "collation.h"

Other changes:

- Adding helper header files
     utils/common/mcsconfig_conflicting_defs_remember.h
     utils/common/mcsconfig_conflicting_defs_restore.h
     utils/common/mcsconfig_conflicting_defs_undef.h
  to perform conflict resolution easier.

- Removing `#include "collation.h"` from a number of files,
  as it's automatically included from rowgroup.h.

- Removing redundant `#include "utils_utf8.h"`.
  This change is not directly related to the problem being fixed,
  but it's nice to remove redundant directives for both collation.h
  and utils_utf8.h from all the files that do not really need them.
  (this change could probably have gone as a separate commit)

- Changing my_init() to MY_INIT(argv[0]) in the MCS services sources.
  After the fix of the complitation failure it appeared that ColumnStore
  services compiled with the debug build crash due to recent changes in
  safemalloc. The crash happened in strcmp() with `my_progname` as an argument
  (where my_progname is a mysys global variable). This problem should
  probably be fixed on the server side as well to avoid passing NULL.
  But, the majority of MariaDB executable programs also use MY_INIT(argv[0])
  rather than my_init(). So let's make MCS do like the other programs do.
2021-05-25 12:34:36 +04:00

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/* Copyright (C) 2014 InfiniDB, Inc.
Copyright (C) 2019 MariaDB Corporation
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_nullif.cpp 2485 2011-04-05 19:01:13Z zzhu $
*
*
****************************************************************************/
#include <cstdlib>
#include <string>
#include <sstream>
using namespace std;
#include "functor_all.h"
#include "functioncolumn.h"
#include "rowgroup.h"
using namespace execplan;
#include "rowgroup.h"
using namespace rowgroup;
#include "errorcodes.h"
#include "idberrorinfo.h"
#include "errorids.h"
using namespace logging;
using namespace dataconvert;
#include "funchelpers.h"
using namespace funcexp;
namespace funcexp
{
CalpontSystemCatalog::ColType Func_nullif::operationType( FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
{
return resultType;
}
int64_t Func_nullif::getIntVal(rowgroup::Row& row,
FunctionParm& parm,
bool& isNull,
execplan::CalpontSystemCatalog::ColType& op_ct)
{
int64_t exp1 = parm[0]->data()->getIntVal(row, isNull);
int64_t exp2 = 0;
switch (parm[1]->data()->resultType().colDataType)
{
case execplan::CalpontSystemCatalog::BIGINT:
case execplan::CalpontSystemCatalog::INT:
case execplan::CalpontSystemCatalog::MEDINT:
case execplan::CalpontSystemCatalog::TINYINT:
case execplan::CalpontSystemCatalog::SMALLINT:
case execplan::CalpontSystemCatalog::DOUBLE:
case execplan::CalpontSystemCatalog::FLOAT:
case execplan::CalpontSystemCatalog::DECIMAL:
case execplan::CalpontSystemCatalog::UDECIMAL:
case execplan::CalpontSystemCatalog::VARCHAR:
case execplan::CalpontSystemCatalog::CHAR:
case execplan::CalpontSystemCatalog::TEXT:
{
exp2 = parm[1]->data()->getIntVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
case execplan::CalpontSystemCatalog::UBIGINT:
case execplan::CalpontSystemCatalog::UINT:
case execplan::CalpontSystemCatalog::UMEDINT:
case execplan::CalpontSystemCatalog::UTINYINT:
case execplan::CalpontSystemCatalog::USMALLINT:
{
exp2 = parm[1]->data()->getUintVal(row, isNull);
break;
}
case execplan::CalpontSystemCatalog::DATE:
{
if (parm[0]->data()->resultType().colDataType ==
execplan::CalpontSystemCatalog::DATETIME)
{
// NULLIF arg0 is DATETIME, arg1 is DATE,
// Upgrade arg1 to datetime
exp2 = parm[1]->data()->getDatetimeIntVal(row, isNull);
}
else
{
// NULLIF arg0 is not DATETIME (might be date), arg1 is not DATE
// Use arg1 as DATE
exp2 = parm[1]->data()->getDateIntVal(row, isNull);
}
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
break;
case execplan::CalpontSystemCatalog::DATETIME:
{
exp2 = parm[1]->data()->getDatetimeIntVal(row, isNull);
if ((parm[0]->data()->resultType().colDataType ==
execplan::CalpontSystemCatalog::DATE) ||
(parm[0]->data()->resultType().colDataType ==
execplan::CalpontSystemCatalog::DATETIME))
{
// NULLIF arg0 is DATE, arg1 is DATETIME,
// Upgrade arg1 to datetime
// When comparing exp1 as a Date, we can't simply promote. We have
// to be careful of the return value in case of not null return.
int64_t exp1 = parm[0]->data()->getDatetimeIntVal(row, isNull);
if ( exp1 == exp2 )
{
isNull = true;
return 0;
}
// since exp1 here is inside the block, when we leave the block, the
// original (Date) value is restored.
}
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
case execplan::CalpontSystemCatalog::TIMESTAMP:
{
exp2 = parm[1]->data()->getTimestampIntVal(row, isNull);
if ((parm[0]->data()->resultType().colDataType ==
execplan::CalpontSystemCatalog::TIMESTAMP) ||
(parm[0]->data()->resultType().colDataType ==
execplan::CalpontSystemCatalog::DATETIME))
{
// NULLIF arg0 is DATETIME, arg1 is TIMESTAMP,
// Upgrade arg0 to timestamp
// When comparing exp1 as a Date, we can't simply promote. We have
// to be careful of the return value in case of not null return.
int64_t exp1 = parm[0]->data()->getTimestampIntVal(row, isNull);
if ( exp1 == exp2 )
{
isNull = true;
return 0;
}
// since exp1 here is inside the block, when we leave the block, the
// original (Date) value is restored.
}
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
case execplan::CalpontSystemCatalog::TIME:
{
exp2 = parm[1]->data()->getTimeIntVal(row, isNull);
if ((parm[0]->data()->resultType().colDataType ==
execplan::CalpontSystemCatalog::DATETIME) ||
(parm[0]->data()->resultType().colDataType ==
execplan::CalpontSystemCatalog::TIME))
{
// NULLIF arg0 is DATETIME, arg1 is TIME,
// Upgrade arg1 to time
// When comparing exp1 as a Date, we can't simply promote. We have
// to be careful of the return value in case of not null return.
int64_t exp1 = parm[0]->data()->getTimeIntVal(row, isNull);
if ( exp1 == exp2 )
{
isNull = true;
return 0;
}
// since exp1 here is inside the block, when we leave the block, the
// original (Date) value is restored.
}
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
default:
{
isNull = true;
}
}
if ( exp1 == exp2 )
{
isNull = true;
return 0;
}
return exp1;
}
uint64_t Func_nullif::getUintVal(rowgroup::Row& row,
FunctionParm& parm,
bool& isNull,
execplan::CalpontSystemCatalog::ColType& op_ct)
{
uint64_t exp1 = parm[0]->data()->getUintVal(row, isNull);
uint64_t exp2 = 0;
switch (parm[1]->data()->resultType().colDataType)
{
case execplan::CalpontSystemCatalog::BIGINT:
case execplan::CalpontSystemCatalog::INT:
case execplan::CalpontSystemCatalog::MEDINT:
case execplan::CalpontSystemCatalog::TINYINT:
case execplan::CalpontSystemCatalog::SMALLINT:
case execplan::CalpontSystemCatalog::DOUBLE:
case execplan::CalpontSystemCatalog::UDOUBLE:
case execplan::CalpontSystemCatalog::FLOAT:
case execplan::CalpontSystemCatalog::UFLOAT:
case execplan::CalpontSystemCatalog::DECIMAL:
case execplan::CalpontSystemCatalog::UDECIMAL:
case execplan::CalpontSystemCatalog::VARCHAR:
case execplan::CalpontSystemCatalog::CHAR:
case execplan::CalpontSystemCatalog::TEXT:
{
int64_t iexp2 = parm[1]->data()->getIntVal(row, isNull);
if (isNull || iexp2 < 0)
{
isNull = false;
return exp1;
}
exp2 = iexp2;
break;
}
case execplan::CalpontSystemCatalog::UBIGINT:
case execplan::CalpontSystemCatalog::UINT:
case execplan::CalpontSystemCatalog::UMEDINT:
case execplan::CalpontSystemCatalog::UTINYINT:
case execplan::CalpontSystemCatalog::USMALLINT:
{
exp2 = parm[1]->data()->getUintVal(row, isNull);
break;
}
case execplan::CalpontSystemCatalog::DATE:
{
exp2 = parm[1]->data()->getDateIntVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
break;
case execplan::CalpontSystemCatalog::DATETIME:
{
exp2 = parm[1]->data()->getDatetimeIntVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
case execplan::CalpontSystemCatalog::TIMESTAMP:
{
exp2 = parm[1]->data()->getTimestampIntVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
case execplan::CalpontSystemCatalog::TIME:
{
exp2 = parm[1]->data()->getTimeIntVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
default:
{
isNull = true;
}
}
if ( exp1 == exp2 )
{
isNull = true;
return 0;
}
return exp1;
}
string Func_nullif::getStrVal(rowgroup::Row& row,
FunctionParm& parm,
bool& isNull,
CalpontSystemCatalog::ColType& op_ct)
{
string exp1 = parm[0]->data()->getStrVal(row, isNull);
CHARSET_INFO* cs = parm[0]->data()->resultType().getCharset();
if (isNull)
{
isNull = false;
return "";
}
string exp2 = parm[1]->data()->getStrVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
int datatype0 = parm[0]->data()->resultType().colDataType;
int datatype1 = parm[1]->data()->resultType().colDataType;
if ( datatype0 == execplan::CalpontSystemCatalog::DATE &&
(datatype1 == execplan::CalpontSystemCatalog::DATETIME ||
datatype1 == execplan::CalpontSystemCatalog::TIMESTAMP))
{
exp1 = exp1 + " 00:00:00";
}
if ( datatype1 == execplan::CalpontSystemCatalog::DATE &&
(datatype0 == execplan::CalpontSystemCatalog::DATETIME ||
datatype0 == execplan::CalpontSystemCatalog::TIMESTAMP))
{
exp2 = exp2 + " 00:00:00";
}
if (cs->strnncoll(exp1.c_str(), exp1.length(), exp2.c_str(), exp2.length()) == 0)
{
isNull = true;
return "";
}
return parm[0]->data()->getStrVal(row, isNull);
}
int32_t Func_nullif::getDateIntVal(rowgroup::Row& row,
FunctionParm& parm,
bool& isNull,
CalpontSystemCatalog::ColType& ct)
{
int64_t exp1 = parm[0]->data()->getDateIntVal(row, isNull);
int64_t exp2 = 0;
switch (parm[1]->data()->resultType().colDataType)
{
case execplan::CalpontSystemCatalog::BIGINT:
case execplan::CalpontSystemCatalog::INT:
case execplan::CalpontSystemCatalog::MEDINT:
case execplan::CalpontSystemCatalog::TINYINT:
case execplan::CalpontSystemCatalog::SMALLINT:
case execplan::CalpontSystemCatalog::DOUBLE:
case execplan::CalpontSystemCatalog::FLOAT:
case execplan::CalpontSystemCatalog::DECIMAL:
case execplan::CalpontSystemCatalog::UDECIMAL:
case execplan::CalpontSystemCatalog::VARCHAR:
case execplan::CalpontSystemCatalog::CHAR:
case execplan::CalpontSystemCatalog::TEXT:
{
exp2 = parm[1]->data()->getIntVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
case execplan::CalpontSystemCatalog::DATE:
{
exp2 = parm[1]->data()->getDateIntVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
break;
case execplan::CalpontSystemCatalog::DATETIME:
{
exp2 = parm[1]->data()->getDatetimeIntVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
case execplan::CalpontSystemCatalog::TIMESTAMP:
{
exp2 = parm[1]->data()->getTimestampIntVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
default:
{
isNull = true;
}
}
if ( exp1 == exp2 )
{
isNull = true;
return 0;
}
return exp1;
}
int64_t Func_nullif::getDatetimeIntVal(rowgroup::Row& row,
FunctionParm& parm,
bool& isNull,
CalpontSystemCatalog::ColType& ct)
{
int64_t exp1 = parm[0]->data()->getDatetimeIntVal(row, isNull);
int64_t exp2 = 0;
switch (parm[1]->data()->resultType().colDataType)
{
case execplan::CalpontSystemCatalog::BIGINT:
case execplan::CalpontSystemCatalog::INT:
case execplan::CalpontSystemCatalog::MEDINT:
case execplan::CalpontSystemCatalog::TINYINT:
case execplan::CalpontSystemCatalog::SMALLINT:
case execplan::CalpontSystemCatalog::DOUBLE:
case execplan::CalpontSystemCatalog::FLOAT:
case execplan::CalpontSystemCatalog::DECIMAL:
case execplan::CalpontSystemCatalog::UDECIMAL:
case execplan::CalpontSystemCatalog::VARCHAR:
case execplan::CalpontSystemCatalog::CHAR:
case execplan::CalpontSystemCatalog::TEXT:
case execplan::CalpontSystemCatalog::DATE:
{
// Upgrade to datetime for proper comparison
exp2 = parm[1]->data()->getDatetimeIntVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
break;
case execplan::CalpontSystemCatalog::TIME:
case execplan::CalpontSystemCatalog::DATETIME:
case execplan::CalpontSystemCatalog::TIMESTAMP:
{
exp2 = parm[1]->data()->getDatetimeIntVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
default:
{
isNull = true;
}
}
if ( exp1 == exp2 )
{
isNull = true;
return 0;
}
return exp1;
}
int64_t Func_nullif::getTimeIntVal(rowgroup::Row& row,
FunctionParm& parm,
bool& isNull,
CalpontSystemCatalog::ColType& ct)
{
int64_t exp1 = parm[0]->data()->getTimeIntVal(row, isNull);
int64_t exp2 = 0;
switch (parm[1]->data()->resultType().colDataType)
{
case execplan::CalpontSystemCatalog::BIGINT:
case execplan::CalpontSystemCatalog::INT:
case execplan::CalpontSystemCatalog::MEDINT:
case execplan::CalpontSystemCatalog::TINYINT:
case execplan::CalpontSystemCatalog::SMALLINT:
case execplan::CalpontSystemCatalog::DOUBLE:
case execplan::CalpontSystemCatalog::FLOAT:
case execplan::CalpontSystemCatalog::DECIMAL:
case execplan::CalpontSystemCatalog::UDECIMAL:
case execplan::CalpontSystemCatalog::VARCHAR:
case execplan::CalpontSystemCatalog::CHAR:
case execplan::CalpontSystemCatalog::TEXT:
case execplan::CalpontSystemCatalog::TIME:
case execplan::CalpontSystemCatalog::DATETIME:
case execplan::CalpontSystemCatalog::TIMESTAMP:
{
exp2 = parm[1]->data()->getTimeIntVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
default:
{
isNull = false;
return exp1;
}
}
if ( exp1 == exp2 )
{
isNull = true;
return 0;
}
return exp1;
}
int64_t Func_nullif::getTimestampIntVal(rowgroup::Row& row,
FunctionParm& parm,
bool& isNull,
CalpontSystemCatalog::ColType& ct)
{
int64_t exp1 = parm[0]->data()->getTimestampIntVal(row, isNull);
int64_t exp2 = 0;
switch (parm[1]->data()->resultType().colDataType)
{
case execplan::CalpontSystemCatalog::BIGINT:
case execplan::CalpontSystemCatalog::INT:
case execplan::CalpontSystemCatalog::MEDINT:
case execplan::CalpontSystemCatalog::TINYINT:
case execplan::CalpontSystemCatalog::SMALLINT:
case execplan::CalpontSystemCatalog::DOUBLE:
case execplan::CalpontSystemCatalog::FLOAT:
case execplan::CalpontSystemCatalog::DECIMAL:
case execplan::CalpontSystemCatalog::UDECIMAL:
case execplan::CalpontSystemCatalog::VARCHAR:
case execplan::CalpontSystemCatalog::CHAR:
case execplan::CalpontSystemCatalog::TEXT:
case execplan::CalpontSystemCatalog::TIME:
case execplan::CalpontSystemCatalog::DATETIME:
case execplan::CalpontSystemCatalog::TIMESTAMP:
{
exp2 = parm[1]->data()->getTimestampIntVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
default:
{
isNull = false;
return exp1;
}
}
if ( exp1 == exp2 )
{
isNull = true;
return 0;
}
return exp1;
}
double Func_nullif::getDoubleVal(rowgroup::Row& row,
FunctionParm& parm,
bool& isNull,
execplan::CalpontSystemCatalog::ColType& op_ct)
{
double exp1 = parm[0]->data()->getDoubleVal(row, isNull);
double exp2 = 0;
switch (parm[1]->data()->resultType().colDataType)
{
case execplan::CalpontSystemCatalog::BIGINT:
case execplan::CalpontSystemCatalog::INT:
case execplan::CalpontSystemCatalog::MEDINT:
case execplan::CalpontSystemCatalog::TINYINT:
case execplan::CalpontSystemCatalog::SMALLINT:
case execplan::CalpontSystemCatalog::DOUBLE:
case execplan::CalpontSystemCatalog::FLOAT:
case execplan::CalpontSystemCatalog::DECIMAL:
case execplan::CalpontSystemCatalog::UDECIMAL:
case execplan::CalpontSystemCatalog::VARCHAR:
case execplan::CalpontSystemCatalog::CHAR:
case execplan::CalpontSystemCatalog::TEXT:
{
exp2 = parm[1]->data()->getDoubleVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
case execplan::CalpontSystemCatalog::LONGDOUBLE:
{
exp2 = (double)parm[1]->data()->getLongDoubleVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
case execplan::CalpontSystemCatalog::DATE:
{
exp2 = parm[1]->data()->getDateIntVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
break;
case execplan::CalpontSystemCatalog::TIME:
case execplan::CalpontSystemCatalog::DATETIME:
{
exp2 = parm[1]->data()->getDatetimeIntVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
default:
{
isNull = true;
}
}
if ( exp1 == exp2 )
{
isNull = true;
return 0;
}
return exp1;
}
long double Func_nullif::getLongDoubleVal(rowgroup::Row& row,
FunctionParm& parm,
bool& isNull,
execplan::CalpontSystemCatalog::ColType& op_ct)
{
long double exp1 = parm[0]->data()->getLongDoubleVal(row, isNull);
long double exp2 = 0;
switch (parm[1]->data()->resultType().colDataType)
{
case execplan::CalpontSystemCatalog::BIGINT:
case execplan::CalpontSystemCatalog::INT:
case execplan::CalpontSystemCatalog::MEDINT:
case execplan::CalpontSystemCatalog::TINYINT:
case execplan::CalpontSystemCatalog::SMALLINT:
case execplan::CalpontSystemCatalog::DOUBLE:
case execplan::CalpontSystemCatalog::FLOAT:
case execplan::CalpontSystemCatalog::DECIMAL:
case execplan::CalpontSystemCatalog::UDECIMAL:
case execplan::CalpontSystemCatalog::VARCHAR:
case execplan::CalpontSystemCatalog::CHAR:
case execplan::CalpontSystemCatalog::TEXT:
{
exp2 = parm[1]->data()->getDoubleVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
case execplan::CalpontSystemCatalog::LONGDOUBLE:
{
exp2 = parm[1]->data()->getLongDoubleVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
case execplan::CalpontSystemCatalog::DATE:
{
exp2 = parm[1]->data()->getDateIntVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
break;
case execplan::CalpontSystemCatalog::TIME:
case execplan::CalpontSystemCatalog::DATETIME:
{
exp2 = parm[1]->data()->getDatetimeIntVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
case execplan::CalpontSystemCatalog::TIMESTAMP:
{
exp2 = parm[1]->data()->getTimestampIntVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
break;
}
default:
{
isNull = true;
}
}
if ( exp1 == exp2 )
{
isNull = true;
return 0;
}
return exp1;
}
execplan::IDB_Decimal Func_nullif::getDecimalVal(rowgroup::Row& row,
FunctionParm& parm,
bool& isNull,
execplan::CalpontSystemCatalog::ColType& op_ct)
{
IDB_Decimal exp1 = parm[0]->data()->getDecimalVal(row, isNull);
IDB_Decimal exp2;
switch (parm[1]->data()->resultType().colDataType)
{
case execplan::CalpontSystemCatalog::BIGINT:
case execplan::CalpontSystemCatalog::INT:
case execplan::CalpontSystemCatalog::MEDINT:
case execplan::CalpontSystemCatalog::TINYINT:
case execplan::CalpontSystemCatalog::SMALLINT:
case execplan::CalpontSystemCatalog::UBIGINT:
case execplan::CalpontSystemCatalog::UINT:
case execplan::CalpontSystemCatalog::UMEDINT:
case execplan::CalpontSystemCatalog::UTINYINT:
case execplan::CalpontSystemCatalog::USMALLINT:
case execplan::CalpontSystemCatalog::DECIMAL:
case execplan::CalpontSystemCatalog::UDECIMAL:
{
exp2 = parm[1]->data()->getDecimalVal(row, isNull);
if (isNull)
{
isNull = false;
return exp1;
}
}
break;
case execplan::CalpontSystemCatalog::VARCHAR:
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;
}
/* fall through */
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::TIME:
case execplan::CalpontSystemCatalog::DATETIME:
case execplan::CalpontSystemCatalog::TIMESTAMP:
{
int32_t s = 0;
int64_t x = 0;
string value;
if (parm[1]->data()->resultType().colDataType == execplan::CalpontSystemCatalog::TIMESTAMP)
value = DataConvert::timestampToString1(parm[1]->data()->getTimestampIntVal(row, isNull), timeZone());
else
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:
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