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MCOL-1356: Add convert_tz (#2099)

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benthompson15
2021-08-19 17:47:10 -05:00
committed by GitHub
parent 0e11a6c294
commit 923bbf4033
9 changed files with 1334 additions and 2 deletions
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58
dbcon/mysql/ha_mcs_execplan.cpp
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@ -61,6 +61,7 @@ using namespace logging;
#include "ha_mcs_sysvars.h"
#include "ha_subquery.h"
#include "ha_mcs_pushdown.h"
#include "ha_tzinfo.h"
using namespace cal_impl_if;
#include "calpontselectexecutionplan.h"
@ -4177,6 +4178,63 @@ ReturnedColumn* buildFunctionColumn(
}
}
// Take the value of to/from TZ data and check if its a description or offset via
// my_tzinfo_find. Offset value will leave the corresponding tzinfo funcParms empty.
// while descriptions will lookup the time_zone_info structure and serialize for use
// in primproc func_convert_tz
if (funcName == "convert_tz")
{
messageqcpp::ByteStream bs;
string tzinfo;
SimpleColumn* scCheck;
// MCOL-XXXX There is no way currently to perform this lookup when the timezone description
// comes from another table of timezone descriptions.
// 1. Move proc code into plugin where it will have access to this table data
// 2. Create a library that primproc can use to access the time zone data tables.
// for now throw a message that this is not supported
scCheck = dynamic_cast<SimpleColumn*>(funcParms[1]->data());
if (scCheck)
{
gwi.fatalParseError = true;
gwi.parseErrorText = "convert_tz with parameter column_name in a Columnstore table";
setError(gwi.thd, ER_NOT_SUPPORTED_YET, gwi.parseErrorText, gwi);
return NULL;
}
scCheck = dynamic_cast<SimpleColumn*>(funcParms[2]->data());
if (scCheck)
{
gwi.fatalParseError = true;
gwi.parseErrorText = "convert_tz with parameter column_name in a Columnstore table";
setError(gwi.thd, ER_NOT_SUPPORTED_YET, gwi.parseErrorText, gwi);
return NULL;
}
dataconvert::TIME_ZONE_INFO* from_tzinfo = my_tzinfo_find(gwi.thd, ifp->arguments()[1]->val_str());
dataconvert::TIME_ZONE_INFO* to_tzinfo = my_tzinfo_find(gwi.thd, ifp->arguments()[2]->val_str());
if (from_tzinfo)
{
serializeTimezoneInfo(bs,from_tzinfo);
uint32_t length = bs.length();
uint8_t *buf = new uint8_t[length];
bs >> buf;
tzinfo = string((char*)buf, length);
}
sptp.reset(new ParseTree(new ConstantColumn(tzinfo)));
(dynamic_cast<ConstantColumn*>(sptp->data()))->timeZone(gwi.thd->variables.time_zone->get_name()->ptr());
funcParms.push_back(sptp);
tzinfo.clear();
if (to_tzinfo)
{
serializeTimezoneInfo(bs,to_tzinfo);
uint32_t length = bs.length();
uint8_t *buf = new uint8_t[length];
bs >> buf;
tzinfo = string((char*)buf, length);
}
sptp.reset(new ParseTree(new ConstantColumn(tzinfo)));
(dynamic_cast<ConstantColumn*>(sptp->data()))->timeZone(gwi.thd->variables.time_zone->get_name()->ptr());
funcParms.push_back(sptp);
tzinfo.clear();
}
if (funcName == "sysdate")
{
gwi.no_parm_func_list.push_back(fc);