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Version 20.55: Apr 04, 2021 Optimizations in database selects.

This commit is contained in:
acanas 2021-04-04 14:46:41 +02:00
parent fb564b58cf
commit 9dba8e5314
6 changed files with 473 additions and 528 deletions
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798
swad_API.c
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File diff suppressed because it is too large Load Diff

4
swad_assignment.c
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@ -684,7 +684,6 @@ static void Asg_GetListAssignments (struct Asg_Assignments *Assignments)
[Dat_END_TIME ] = "EndTime DESC,StartTime DESC,Title DESC",
};
MYSQL_RES *mysql_res;
MYSQL_ROW row;
unsigned long NumRows;
unsigned NumAsg;
@ -741,8 +740,7 @@ static void Asg_GetListAssignments (struct Asg_Assignments *Assignments)
NumAsg++)
{
/* Get next assignment code */
row = mysql_fetch_row (mysql_res);
if ((Assignments->LstAsgCods[NumAsg] = Str_ConvertStrCodToLongCod (row[0])) < 0)
if ((Assignments->LstAsgCods[NumAsg] = DB_GetNextCod (mysql_res)) < 0)
Lay_ShowErrorAndExit ("Error: wrong assignment code.");
}
}

156
swad_attendance.c
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@ -668,7 +668,6 @@ static void Att_GetListAttEvents (struct Att_Events *Events,
[Dat_END_TIME ][Att_OLDEST_FIRST] = "EndTime,StartTime,Title",
};
MYSQL_RES *mysql_res;
MYSQL_ROW row;
unsigned long NumRows;
unsigned NumAttEvent;
@ -721,8 +720,7 @@ static void Att_GetListAttEvents (struct Att_Events *Events,
NumAttEvent++)
{
/* Get next attendance event code */
row = mysql_fetch_row (mysql_res);
if ((Events->Lst[NumAttEvent].AttCod = Str_ConvertStrCodToLongCod (row[0])) < 0)
if ((Events->Lst[NumAttEvent].AttCod = DB_GetNextCod (mysql_res)) < 0)
Lay_ShowErrorAndExit ("Error: wrong attendance event code.");
}
}
@ -873,7 +871,7 @@ static void Att_GetAttEventDescriptionFromDB (long AttCod,char Description[Cns_M
/***** Get text of attendance event from database *****/
NumRows = DB_QuerySELECT (&mysql_res,"can not get attendance event text",
"SELECT Txt"
"SELECT Txt" // row[0]
" FROM att_events"
" WHERE AttCod=%ld"
" AND CrsCod=%ld",
@ -1549,21 +1547,22 @@ static void Att_GetAndWriteNamesOfGrpsAssociatedToAttEvent (struct Att_Event *Ev
unsigned NumGrps;
/***** Get groups associated to an attendance event from database *****/
NumGrps = (unsigned) DB_QuerySELECT (&mysql_res,"can not get groups of an attendance event",
"SELECT grp_types.GrpTypName," // row[0]
"grp_groups.GrpName," // row[1]
"roo_rooms.ShortName" // row[2]
" FROM (att_groups,"
"grp_groups,"
"grp_types)"
" LEFT JOIN roo_rooms"
" ON grp_groups.RooCod=roo_rooms.RooCod"
" WHERE att_groups.AttCod=%ld"
" AND att_groups.GrpCod=grp_groups.GrpCod"
" AND grp_groups.GrpTypCod=grp_types.GrpTypCod"
" ORDER BY grp_types.GrpTypName,"
"grp_groups.GrpName",
Event->AttCod);
NumGrps = (unsigned)
DB_QuerySELECT (&mysql_res,"can not get groups of an attendance event",
"SELECT grp_types.GrpTypName," // row[0]
"grp_groups.GrpName," // row[1]
"roo_rooms.ShortName" // row[2]
" FROM (att_groups,"
"grp_groups,"
"grp_types)"
" LEFT JOIN roo_rooms"
" ON grp_groups.RooCod=roo_rooms.RooCod"
" WHERE att_groups.AttCod=%ld"
" AND att_groups.GrpCod=grp_groups.GrpCod"
" AND grp_groups.GrpTypCod=grp_types.GrpTypCod"
" ORDER BY grp_types.GrpTypName,"
"grp_groups.GrpName",
Event->AttCod);
/***** Write heading *****/
HTM_DIV_Begin ("class=\"%s\"",Event->Hidden ? "ASG_GRP_LIGHT" :
@ -1720,73 +1719,54 @@ unsigned Att_GetNumAttEventsInCrs (long CrsCod)
unsigned Att_GetNumCoursesWithAttEvents (Hie_Lvl_Level_t Scope)
{
MYSQL_RES *mysql_res;
MYSQL_ROW row;
unsigned NumCourses;
/***** Get number of courses with attendance events from database *****/
switch (Scope)
{
case Hie_Lvl_SYS:
DB_QuerySELECT (&mysql_res,"can not get number of courses with attendance events",
"SELECT COUNT(DISTINCT CrsCod)"
" FROM att_events"
" WHERE CrsCod>0");
break;
return DB_QueryCOUNT ("can not get number of courses with attendance events",
"SELECT COUNT(DISTINCT CrsCod)"
" FROM att_events"
" WHERE CrsCod>0");
case Hie_Lvl_INS:
DB_QuerySELECT (&mysql_res,"can not get number of courses with attendance events",
"SELECT COUNT(DISTINCT att_events.CrsCod)"
" FROM ctr_centers,"
"deg_degrees,"
"crs_courses,"
"att_events"
" WHERE ctr_centers.InsCod=%ld"
" AND ctr_centers.CtrCod=deg_degrees.CtrCod"
" AND deg_degrees.DegCod=crs_courses.DegCod"
" AND crs_courses.CrsCod=att_events.CrsCod",
Gbl.Hierarchy.Ins.InsCod);
break;
return DB_QueryCOUNT ("can not get number of courses with attendance events",
"SELECT COUNT(DISTINCT att_events.CrsCod)"
" FROM ctr_centers,"
"deg_degrees,"
"crs_courses,"
"att_events"
" WHERE ctr_centers.InsCod=%ld"
" AND ctr_centers.CtrCod=deg_degrees.CtrCod"
" AND deg_degrees.DegCod=crs_courses.DegCod"
" AND crs_courses.CrsCod=att_events.CrsCod",
Gbl.Hierarchy.Ins.InsCod);
case Hie_Lvl_CTR:
DB_QuerySELECT (&mysql_res,"can not get number of courses with attendance events",
"SELECT COUNT(DISTINCT att_events.CrsCod)"
" FROM deg_degrees,"
"crs_courses,"
"att_events"
" WHERE deg_degrees.CtrCod=%ld"
" AND deg_degrees.DegCod=crs_courses.DegCod"
" AND crs_courses.CrsCod=att_events.CrsCod",
Gbl.Hierarchy.Ctr.CtrCod);
break;
return DB_QueryCOUNT ("can not get number of courses with attendance events",
"SELECT COUNT(DISTINCT att_events.CrsCod)"
" FROM deg_degrees,"
"crs_courses,"
"att_events"
" WHERE deg_degrees.CtrCod=%ld"
" AND deg_degrees.DegCod=crs_courses.DegCod"
" AND crs_courses.CrsCod=att_events.CrsCod",
Gbl.Hierarchy.Ctr.CtrCod);
case Hie_Lvl_DEG:
DB_QuerySELECT (&mysql_res,"can not get number of courses with attendance events",
"SELECT COUNT(DISTINCT att_events.CrsCod)"
" FROM crs_courses,"
"att_events"
" WHERE crs_courses.DegCod=%ld"
" AND crs_courses.CrsCod=att_events.CrsCod",
Gbl.Hierarchy.Deg.DegCod);
break;
return DB_QueryCOUNT ("can not get number of courses with attendance events",
"SELECT COUNT(DISTINCT att_events.CrsCod)"
" FROM crs_courses,"
"att_events"
" WHERE crs_courses.DegCod=%ld"
" AND crs_courses.CrsCod=att_events.CrsCod",
Gbl.Hierarchy.Deg.DegCod);
case Hie_Lvl_CRS:
DB_QuerySELECT (&mysql_res,"can not get number of courses with attendance events",
"SELECT COUNT(DISTINCT CrsCod)"
" FROM att_events"
" WHERE CrsCod=%ld",
Gbl.Hierarchy.Crs.CrsCod);
break;
return DB_QueryCOUNT ("can not get number of courses with attendance events",
"SELECT COUNT(DISTINCT CrsCod)"
" FROM att_events"
" WHERE CrsCod=%ld",
Gbl.Hierarchy.Crs.CrsCod);
default:
Lay_WrongScopeExit ();
break;
return 0; // Not reached
}
/***** Get number of courses *****/
row = mysql_fetch_row (mysql_res);
if (sscanf (row[0],"%u",&NumCourses) != 1)
Lay_ShowErrorAndExit ("Error when getting number of courses with attendance events.");
/***** Free structure that stores the query result *****/
DB_FreeMySQLResult (&mysql_res);
return NumCourses;
}
/*****************************************************************************/
@ -1806,15 +1786,15 @@ unsigned Att_GetNumAttEvents (Hie_Lvl_Level_t Scope,unsigned *NumNotif)
{
case Hie_Lvl_SYS:
DB_QuerySELECT (&mysql_res,"can not get number of attendance events",
"SELECT COUNT(*),"
"SUM(NumNotif)"
"SELECT COUNT(*)," // row[0]
"SUM(NumNotif)" // row[1]
" FROM att_events"
" WHERE CrsCod>0");
break;
case Hie_Lvl_INS:
DB_QuerySELECT (&mysql_res,"can not get number of attendance events",
"SELECT COUNT(*),"
"SUM(att_events.NumNotif)"
"SELECT COUNT(*)," // row[0]
"SUM(att_events.NumNotif)" // row[1]
" FROM ctr_centers,"
"deg_degrees,"
"crs_courses,"
@ -1827,8 +1807,8 @@ unsigned Att_GetNumAttEvents (Hie_Lvl_Level_t Scope,unsigned *NumNotif)
break;
case Hie_Lvl_CTR:
DB_QuerySELECT (&mysql_res,"can not get number of attendance events",
"SELECT COUNT(*),"
"SUM(att_events.NumNotif)"
"SELECT COUNT(*)," // row[0]
"SUM(att_events.NumNotif)" // row[1]
" FROM deg_degrees,"
"crs_courses,"
"att_events"
@ -1839,8 +1819,8 @@ unsigned Att_GetNumAttEvents (Hie_Lvl_Level_t Scope,unsigned *NumNotif)
break;
case Hie_Lvl_DEG:
DB_QuerySELECT (&mysql_res,"can not get number of attendance events",
"SELECT COUNT(*),"
"SUM(att_events.NumNotif)"
"SELECT COUNT(*)," // row[0]
"SUM(att_events.NumNotif)" // row[1]
" FROM crs_courses,"
"att_events"
" WHERE crs_courses.DegCod=%ld"
@ -1849,8 +1829,8 @@ unsigned Att_GetNumAttEvents (Hie_Lvl_Level_t Scope,unsigned *NumNotif)
break;
case Hie_Lvl_CRS:
DB_QuerySELECT (&mysql_res,"can not get number of attendance events",
"SELECT COUNT(*),"
"SUM(NumNotif)"
"SELECT COUNT(*)," // row[0]
"SUM(NumNotif)" // row[1]
" FROM att_events"
" WHERE CrsCod=%ld",
Gbl.Hierarchy.Crs.CrsCod);
@ -2572,7 +2552,7 @@ static bool Att_CheckIfUsrIsInTableAttUsr (long AttCod,long UsrCod,bool *Present
/***** Check if a student is registered in an event in database *****/
InDBTable = (DB_QuerySELECT (&mysql_res,"can not check if a student"
" is already registered in an event",
"SELECT Present"
"SELECT Present" // row[0]
" FROM att_users"
" WHERE AttCod=%ld"
" AND UsrCod=%ld",
@ -3009,7 +2989,6 @@ static void Att_GetListSelectedAttCods (struct Att_Events *Events)
long AttCod;
char LongStr[Cns_MAX_DECIMAL_DIGITS_LONG + 1];
MYSQL_RES *mysql_res;
MYSQL_ROW row;
unsigned NumGrpsInThisEvent;
unsigned NumGrpInThisEvent;
long GrpCodInThisEvent;
@ -3090,8 +3069,7 @@ static void Att_GetListSelectedAttCods (struct Att_Events *Events)
NumGrpInThisEvent++)
{
/* Get next group associated to this event */
row = mysql_fetch_row (mysql_res);
if ((GrpCodInThisEvent = Str_ConvertStrCodToLongCod (row[0])) > 0)
if ((GrpCodInThisEvent = DB_GetNextCod (mysql_res)) > 0)
/* Check if this group is selected */
for (NumGrpSel = 0;
NumGrpSel < Gbl.Crs.Grps.LstGrpsSel.NumGrps &&

3
swad_changelog.h
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@ -600,13 +600,14 @@ TODO: Salvador Romero Cort
TODO: FIX BUG, URGENT! En las fechas como parámetro Dat_WriteParamsIniEndDates(), por ejemplo al cambiar el color de la gráfica de accesos por día y hora, no se respeta la zona horaria.
*/
#define Log_PLATFORM_VERSION "SWAD 20.54 (2021-03-30)"
#define Log_PLATFORM_VERSION "SWAD 20.55 (2021-04-04)"
#define CSS_FILE "swad20.45.css"
#define JS_FILE "swad20.6.2.js"
/*
TODO: Rename CENTRE to CENTER in help wiki.
TODO: Rename ASSESSMENT.Announcements to ASSESSMENT.Calls_for_exams
Version 20.55: Apr 04, 2021 Optimizations in database selects. (309500 lines)
Version 20.54: Mar 30, 2021 Statistics about agendas. (309539 lines)
Version 20.53.1: Mar 30, 2021 Optimizations in database selects. (309459 lines)
Version 20.53: Mar 29, 2021 Code refactoring in database selects. (309473 lines)

38
swad_database.c
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@ -3793,15 +3793,53 @@ unsigned long DB_QuerySELECT (MYSQL_RES **mysql_res,const char *MsgError,
int NumBytesPrinted;
char *Query;
/***** Create query string *****/
va_start (ap,fmt);
NumBytesPrinted = vasprintf (&Query,fmt,ap);
va_end (ap);
if (NumBytesPrinted < 0) // -1 if no memory or any other error
Lay_NotEnoughMemoryExit ();
/***** Do SELECT query *****/
return DB_QuerySELECTusingQueryStr (Query,mysql_res,MsgError);
}
/*****************************************************************************/
/*** Make a SELECT query for a unique row with one long code from database ***/
/*****************************************************************************/
long DB_QuerySELECTCod (const char *MsgError,
const char *fmt,...)
{
MYSQL_RES *mysql_res;
va_list ap;
int NumBytesPrinted;
char *Query;
long Cod;
/***** Create query string *****/
va_start (ap,fmt);
NumBytesPrinted = vasprintf (&Query,fmt,ap);
va_end (ap);
if (NumBytesPrinted < 0) // -1 if no memory or any other error
Lay_NotEnoughMemoryExit ();
/***** Do SELECT query *****/
if (DB_QuerySELECTusingQueryStr (Query,&mysql_res,MsgError)) // Row found
Cod = DB_GetNextCod (mysql_res);
else
Cod = -1L;
/***** Free structure that stores the query result *****/
DB_FreeMySQLResult (&mysql_res);
return Cod;
}
/*****************************************************************************/
/*********** Make a SELECT query from database using query string ************/
/*****************************************************************************/
static unsigned long DB_QuerySELECTusingQueryStr (char *Query,
MYSQL_RES **mysql_res,
const char *MsgError)

2
swad_database.h
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@ -41,6 +41,8 @@ void DB_BuildQuery (char **Query,const char *fmt,...);
unsigned long DB_QuerySELECT (MYSQL_RES **mysql_res,const char *MsgError,
const char *fmt,...);
long DB_QuerySELECTCod (const char *MsgError,
const char *fmt,...);
long DB_GetNextCod (MYSQL_RES *mysql_res);
unsigned long DB_GetNumRowsTable (const char *Table);
unsigned long DB_QueryCOUNT (const char *MsgError,const char *fmt,...);