From 58cfa4c66c7648f563d46192aa232406316e300f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Antonio=20Ca=C3=B1as=20Vargas?= <acanas@ugr.es>
Date: Sat, 11 Mar 2017 00:47:23 +0100
Subject: [PATCH] Version 16.155.5

---
 sql/swad.sql     |   4 +-
 swad_changelog.h |   7 ++-
 swad_database.c  |  70 +++++++++++++--------------
 swad_group.c     | 123 ++++++++++++++++++++++++++++++-----------------
 swad_layout.h    |   2 +-
 5 files changed, 122 insertions(+), 84 deletions(-)

diff --git a/sql/swad.sql b/sql/swad.sql
index 06a66ba3a..287929b9c 100644
--- a/sql/swad.sql
+++ b/sql/swad.sql
@@ -266,7 +266,7 @@ CREATE TABLE IF NOT EXISTS courses (
 CREATE TABLE IF NOT EXISTS crs_grp (
 	GrpCod INT NOT NULL AUTO_INCREMENT,
 	GrpTypCod INT NOT NULL,
-	GrpName VARCHAR(255) NOT NULL,
+	GrpName VARCHAR(2047) NOT NULL,
 	MaxStudents INT NOT NULL,
 	Open ENUM('N','Y') NOT NULL DEFAULT 'N',
 	FileZones ENUM('N','Y') NOT NULL DEFAULT 'N',
@@ -278,7 +278,7 @@ CREATE TABLE IF NOT EXISTS crs_grp (
 CREATE TABLE IF NOT EXISTS crs_grp_types (
 	GrpTypCod INT NOT NULL AUTO_INCREMENT,
 	CrsCod INT NOT NULL DEFAULT -1,
-	GrpTypName VARCHAR(255) NOT NULL,
+	GrpTypName VARCHAR(2047) NOT NULL,
 	Mandatory ENUM('N','Y') NOT NULL,
 	Multiple ENUM('N','Y') NOT NULL,
 	MustBeOpened ENUM('N','Y') NOT NULL DEFAULT 'N',
diff --git a/swad_changelog.h b/swad_changelog.h
index 97644626f..7e177abe4 100644
--- a/swad_changelog.h
+++ b/swad_changelog.h
@@ -207,13 +207,18 @@
 /****************************** Public constants *****************************/
 /*****************************************************************************/
 
-#define Log_PLATFORM_VERSION	"SWAD 16.155.4 (2017-03-10)"
+#define Log_PLATFORM_VERSION	"SWAD 16.155.5 (2017-03-11)"
 #define CSS_FILE		"swad16.147.css"
 #define JS_FILE			"swad16.144.js"
 
 // Number of lines (includes comments but not blank lines) has been got with the following command:
 // nl swad*.c swad*.h css/swad*.css py/swad*.py js/swad*.js soap/swad*?.h sql/swad*.sql | tail -1
 /*
+        Version 16.155.5: Mar 11, 2017	Adjusting size of database fields. (216663 lines)
+					2 changes necessary in database:
+ALTER TABLE crs_grp CHANGE COLUMN GrpName GrpName VARCHAR(2047) NOT NULL;
+ALTER TABLE crs_grp_types CHANGE COLUMN GrpTypName GrpTypName VARCHAR(2047) NOT NULL;
+
         Version 16.155.4: Mar 10, 2017	Adjusting size of database fields. (216626 lines)
 					2 changes necessary in database:
 ALTER TABLE courses CHANGE COLUMN ShortName ShortName VARCHAR(511) COLLATE latin1_spanish_ci NOT NULL;
diff --git a/swad_database.c b/swad_database.c
index 5fdba7bef..828958396 100644
--- a/swad_database.c
+++ b/swad_database.c
@@ -588,20 +588,20 @@ mysql> DESCRIBE countries;
    /***** Table courses *****/
 /*
 mysql> DESCRIBE courses;
-+-----------------+--------------+------+-----+---------+----------------+
-| Field           | Type         | Null | Key | Default | Extra          |
-+-----------------+--------------+------+-----+---------+----------------+
-| CrsCod          | int(11)      | NO   | PRI | NULL    | auto_increment |
-| DegCod          | int(11)      | NO   | MUL | -1      |                |
-| Year            | tinyint(4)   | NO   |     | 0       |                |
-| InsCrsCod       | char(7)      | NO   |     | NULL    |                |
-| Status          | tinyint(4)   | NO   | MUL | 0       |                |
-| RequesterUsrCod | int(11)      | NO   |     | -1      |                |
-| ShortName       | varchar(32)  | NO   |     | NULL    |                |
-| FullName        | varchar(127) | NO   |     | NULL    |                |
-| NumIndicators   | int(11)      | NO   |     | -1      |                |
-+-----------------+--------------+------+-----+---------+----------------+
-9 rows in set (0.00 sec)
++-----------------+---------------+------+-----+---------+----------------+
+| Field           | Type          | Null | Key | Default | Extra          |
++-----------------+---------------+------+-----+---------+----------------+
+| CrsCod          | int(11)       | NO   | PRI | NULL    | auto_increment |
+| DegCod          | int(11)       | NO   | MUL | -1      |                |
+| Year            | tinyint(4)    | NO   |     | 0       |                |
+| InsCrsCod       | char(7)       | NO   |     | NULL    |                |
+| Status          | tinyint(4)    | NO   | MUL | 0       |                |
+| RequesterUsrCod | int(11)       | NO   |     | -1      |                |
+| ShortName       | varchar(511)  | NO   |     | NULL    |                |
+| FullName        | varchar(2047) | NO   |     | NULL    |                |
+| NumIndicators   | int(11)       | NO   |     | -1      |                |
++-----------------+---------------+------+-----+---------+----------------+
+9 rows in set (0,00 sec)
 */
    DB_CreateTable ("CREATE TABLE IF NOT EXISTS courses ("
 			"CrsCod INT NOT NULL AUTO_INCREMENT,"
@@ -625,22 +625,22 @@ mysql> DESCRIBE crs_grp;
 +-------------+---------------+------+-----+---------+----------------+
 | GrpCod      | int(11)       | NO   | PRI | NULL    | auto_increment |
 | GrpTypCod   | int(11)       | NO   | MUL | NULL    |                |
-| GrpName     | varchar(255)  | NO   |     | NULL    |                |
+| GrpName     | varchar(2047) | NO   |     | NULL    |                |
 | MaxStudents | int(11)       | NO   |     | NULL    |                |
 | Open        | enum('N','Y') | NO   |     | N       |                |
 | FileZones   | enum('N','Y') | NO   |     | N       |                |
 +-------------+---------------+------+-----+---------+----------------+
-6 rows in set (0.01 sec)
+6 rows in set (0,00 sec)
 */
    DB_CreateTable ("CREATE TABLE IF NOT EXISTS crs_grp ("
-                   "GrpCod INT NOT NULL AUTO_INCREMENT,"
-                   "GrpTypCod INT NOT NULL,"
-                   "GrpName VARCHAR(255) NOT NULL,"
-                   "MaxStudents INT NOT NULL,"
-                   "Open ENUM('N','Y') NOT NULL DEFAULT 'N',"
-                   "FileZones ENUM('N','Y') NOT NULL DEFAULT 'N',"
-                   "UNIQUE INDEX(GrpCod),"
-                   "INDEX(GrpTypCod))");
+			"GrpCod INT NOT NULL AUTO_INCREMENT,"
+			"GrpTypCod INT NOT NULL,"
+			"GrpName VARCHAR(2047) NOT NULL,"	// Grp_MAX_BYTES_GROUP_NAME
+			"MaxStudents INT NOT NULL,"
+			"Open ENUM('N','Y') NOT NULL DEFAULT 'N',"
+			"FileZones ENUM('N','Y') NOT NULL DEFAULT 'N',"
+		   "UNIQUE INDEX(GrpCod),"
+		   "INDEX(GrpTypCod))");
 
    /***** Table crs_grp_types *****/
 /*
@@ -650,24 +650,24 @@ mysql> DESCRIBE crs_grp_types;
 +--------------+---------------+------+-----+---------+----------------+
 | GrpTypCod    | int(11)       | NO   | PRI | NULL    | auto_increment |
 | CrsCod       | int(11)       | NO   | MUL | -1      |                |
-| GrpTypName   | varchar(255)  | NO   |     | NULL    |                |
+| GrpTypName   | varchar(2047) | NO   |     | NULL    |                |
 | Mandatory    | enum('N','Y') | NO   |     | NULL    |                |
 | Multiple     | enum('N','Y') | NO   |     | NULL    |                |
 | MustBeOpened | enum('N','Y') | NO   |     | N       |                |
 | OpenTime     | datetime      | NO   |     | NULL    |                |
 +--------------+---------------+------+-----+---------+----------------+
-7 rows in set (0.01 sec)
+7 rows in set (0,00 sec)
 */
    DB_CreateTable ("CREATE TABLE IF NOT EXISTS crs_grp_types ("
-                   "GrpTypCod INT NOT NULL AUTO_INCREMENT,"
-                   "CrsCod INT NOT NULL DEFAULT -1,"
-                   "GrpTypName VARCHAR(255) NOT NULL,"
-                   "Mandatory ENUM('N','Y') NOT NULL,"
-                   "Multiple ENUM('N','Y') NOT NULL,"
-                   "MustBeOpened ENUM('N','Y') NOT NULL DEFAULT 'N',"
-                   "OpenTime DATETIME NOT NULL,"
-                   "UNIQUE INDEX(GrpTypCod),"
-                   "INDEX(CrsCod))");
+			"GrpTypCod INT NOT NULL AUTO_INCREMENT,"
+			"CrsCod INT NOT NULL DEFAULT -1,"
+			"GrpTypName VARCHAR(2047) NOT NULL,"	// Grp_MAX_BYTES_GROUP_TYPE_NAME
+			"Mandatory ENUM('N','Y') NOT NULL,"
+			"Multiple ENUM('N','Y') NOT NULL,"
+			"MustBeOpened ENUM('N','Y') NOT NULL DEFAULT 'N',"
+			"OpenTime DATETIME NOT NULL,"
+		   "UNIQUE INDEX(GrpTypCod),"
+		   "INDEX(CrsCod))");
 
    /***** Table crs_grp_usr *****/
 /*
diff --git a/swad_group.c b/swad_group.c
index 1f4acf35a..459117b7a 100644
--- a/swad_group.c
+++ b/swad_group.c
@@ -999,13 +999,14 @@ unsigned Grp_RemoveUsrFromGroups (struct UsrData *UsrDat,struct ListCodGrps *Lst
 void Grp_RemUsrFromAllGrpsInCrs (struct UsrData *UsrDat,struct Course *Crs,Cns_QuietOrVerbose_t QuietOrVerbose)
   {
    extern const char *Txt_THE_USER_X_has_been_removed_from_all_groups_of_the_course_Y;
-   char Query[1024];
+   char Query[512];
 
    /***** Remove user from all the groups of the course *****/
    sprintf (Query,"DELETE FROM crs_grp_usr"
 	          " WHERE UsrCod='%ld' AND GrpCod IN"
                   " (SELECT crs_grp.GrpCod FROM crs_grp_types,crs_grp"
-                  " WHERE crs_grp_types.CrsCod='%ld' AND crs_grp_types.GrpTypCod=crs_grp.GrpTypCod)",
+                  " WHERE crs_grp_types.CrsCod='%ld'"
+                  " AND crs_grp_types.GrpTypCod=crs_grp.GrpTypCod)",
             UsrDat->UsrCod,Crs->CrsCod);
    DB_QueryDELETE (Query,"can not remove a user from all groups of a course");
 
@@ -1025,7 +1026,7 @@ void Grp_RemUsrFromAllGrpsInCrs (struct UsrData *UsrDat,struct Course *Crs,Cns_Q
 void Grp_RemUsrFromAllGrps (struct UsrData *UsrDat,Cns_QuietOrVerbose_t QuietOrVerbose)
   {
    extern const char *Txt_THE_USER_X_has_been_removed_from_all_groups_in_all_courses;
-   char Query[512];
+   char Query[128];
 
    /***** Remove user from all groups *****/
    sprintf (Query,"DELETE FROM crs_grp_usr WHERE UsrCod='%ld'",
@@ -1047,11 +1048,11 @@ void Grp_RemUsrFromAllGrps (struct UsrData *UsrDat,Cns_QuietOrVerbose_t QuietOrV
 
 static void Grp_RemoveUsrFromGroup (long UsrCod,long GrpCod)
   {
-   char Query[512];
+   char Query[256];
 
    /***** Remove user from group *****/
    sprintf (Query,"DELETE FROM crs_grp_usr"
-                  " WHERE GrpCod='%ld' AND UsrCod='%ld'",
+	          " WHERE GrpCod='%ld' AND UsrCod='%ld'",
             GrpCod,UsrCod);
    DB_QueryDELETE (Query,"can not remove a user from a group");
   }
@@ -1062,7 +1063,7 @@ static void Grp_RemoveUsrFromGroup (long UsrCod,long GrpCod)
 
 static void Grp_AddUsrToGroup (struct UsrData *UsrDat,long GrpCod)
   {
-   char Query[512];
+   char Query[256];
 
    /***** Register in group *****/
    sprintf (Query,"INSERT INTO crs_grp_usr (GrpCod,UsrCod)"
@@ -1335,7 +1336,7 @@ static void Grp_ListGroupsForEdition (void)
          fprintf (Gbl.F.Out,"<td class=\"CENTER_MIDDLE\">");
          Act_FormStart (ActChgGrpTyp);
          Grp_PutParamGrpCod (Grp->GrpCod);
-         fprintf (Gbl.F.Out,"<select name=\"GrpTypCod\""
+         fprintf (Gbl.F.Out,"<select name=\"GrpTypCod\" style=\"width:150px;\""
                             " onchange=\"document.getElementById('%s').submit();\">",
                   Gbl.Form.Id);
          for (NumTipGrpAux = 0;
@@ -2207,7 +2208,7 @@ static void Grp_PutFormToCreateGroup (void)
 
    /***** Group type *****/
    fprintf (Gbl.F.Out,"<td class=\"CENTER_MIDDLE\">"
-                      "<select name=\"GrpTypCod\">");
+                      "<select name=\"GrpTypCod\" style=\"width:150px;\">");
    for (NumGrpTyp = 0;
 	NumGrpTyp < Gbl.CurrentCrs.Grps.GrpTypes.Num;
 	NumGrpTyp++)
@@ -2541,7 +2542,7 @@ unsigned Grp_CountNumGrpsInCurrentCrs (void)
 
 static unsigned Grp_CountNumGrpsInThisCrsOfType (long GrpTypCod)
   {
-   char Query[512];
+   char Query[128];
 
    /***** Get number of groups of a type from database *****/
    sprintf (Query,"SELECT COUNT(*) FROM crs_grp WHERE GrpTypCod='%ld'",
@@ -2608,7 +2609,7 @@ static void Grp_GetDataOfGroupTypeByCod (struct GroupType *GrpTyp)
 
 static bool Grp_GetMultipleEnrollmentOfAGroupType (long GrpTypCod)
   {
-   char Query[512];
+   char Query[128];
    MYSQL_RES *mysql_res;
    MYSQL_ROW row;
    bool MultipleEnrollment;
@@ -2709,7 +2710,7 @@ void Grp_GetDataOfGroupByCod (struct GroupData *GrpDat)
 
 static long Grp_GetTypeOfGroupOfAGroup (long GrpCod)
   {
-   char Query[256];
+   char Query[128];
    MYSQL_RES *mysql_res;
    MYSQL_ROW row;
    long GrpTypCod;
@@ -2797,9 +2798,12 @@ static unsigned Grp_CountNumStdsInNoGrpsOfType (long GrpTypCod)
 
    /***** Get number of students not belonging to groups of a type from database ******/
    sprintf (Query,"SELECT COUNT(UsrCod) FROM crs_usr"
-                  " WHERE CrsCod='%ld' AND Role='%u' AND UsrCod NOT IN"
-                  " (SELECT DISTINCT crs_grp_usr.UsrCod FROM crs_grp,crs_grp_usr"
-                  " WHERE crs_grp.GrpTypCod='%ld' AND crs_grp.GrpCod=crs_grp_usr.GrpCod)",
+                  " WHERE CrsCod='%ld' AND Role='%u'"
+                  " AND UsrCod NOT IN"
+                  " (SELECT DISTINCT crs_grp_usr.UsrCod"
+                  " FROM crs_grp,crs_grp_usr"
+                  " WHERE crs_grp.GrpTypCod='%ld'"
+                  " AND crs_grp.GrpCod=crs_grp_usr.GrpCod)",
             Gbl.CurrentCrs.Crs.CrsCod,(unsigned) Rol_STUDENT,GrpTypCod);
    DB_QuerySELECT (Query,&mysql_res,"can not get the number of students not belonging to groups of a type");
 
@@ -2821,15 +2825,17 @@ static unsigned Grp_CountNumStdsInNoGrpsOfType (long GrpTypCod)
 
 static long Grp_GetFirstCodGrpStdBelongsTo (long GrpTypCod,long UsrCod)
   {
-   char Query[1024];
+   char Query[512];
    MYSQL_RES *mysql_res;
    MYSQL_ROW row;
    unsigned long NumRows;
    long CodGrpIBelong;
 
    /***** Get a group which a user belong to from database *****/
-   sprintf (Query,"SELECT crs_grp.GrpCod FROM crs_grp,crs_grp_usr WHERE crs_grp.GrpTypCod='%ld'"
-                  " AND crs_grp.GrpCod=crs_grp_usr.GrpCod AND crs_grp_usr.UsrCod='%ld'",
+   sprintf (Query,"SELECT crs_grp.GrpCod FROM crs_grp,crs_grp_usr"
+	          " WHERE crs_grp.GrpTypCod='%ld'"
+                  " AND crs_grp.GrpCod=crs_grp_usr.GrpCod"
+                  " AND crs_grp_usr.UsrCod='%ld'",
             GrpTypCod,UsrCod);
    NumRows = DB_QuerySELECT (Query,&mysql_res,"can not get the group which a user belongs to");
 
@@ -2880,17 +2886,28 @@ unsigned Grp_NumGrpTypesMandatIDontBelong (void)
 
    /***** Get the number of types of groups with mandatory enrollment which I don't belong to, from database *****/
    sprintf (Query,"SELECT COUNT(DISTINCT GrpTypCod) FROM"
-                  " (SELECT crs_grp_types.GrpTypCod AS GrpTypCod,COUNT(*) AS NumStudents,crs_grp.MaxStudents as MaxStudents"
+                  " (SELECT crs_grp_types.GrpTypCod AS GrpTypCod,"
+                  "COUNT(*) AS NumStudents,"
+                  "crs_grp.MaxStudents as MaxStudents"
                   " FROM crs_grp_types,crs_grp,crs_grp_usr,crs_usr"
-                  " WHERE crs_grp_types.CrsCod='%ld' AND crs_grp_types.Mandatory='Y'"
-                  " AND crs_grp_types.GrpTypCod=crs_grp.GrpTypCod AND crs_grp.Open='Y'"
+                  " WHERE crs_grp_types.CrsCod='%ld'"
+                  " AND crs_grp_types.Mandatory='Y'"
+                  " AND crs_grp_types.GrpTypCod=crs_grp.GrpTypCod"
+                  " AND crs_grp.Open='Y'"
                   " AND crs_grp_types.CrsCod=crs_usr.CrsCod"
-                  " AND crs_grp.GrpCod=crs_grp_usr.GrpCod AND crs_grp_usr.UsrCod=crs_usr.UsrCod AND crs_usr.Role='%u'"
-                  " GROUP BY crs_grp.GrpCod HAVING NumStudents<MaxStudents) AS grp_types_open_not_full"
+                  " AND crs_grp.GrpCod=crs_grp_usr.GrpCod"
+                  " AND crs_grp_usr.UsrCod=crs_usr.UsrCod"
+                  " AND crs_usr.Role='%u'"
+                  " GROUP BY crs_grp.GrpCod"
+                  " HAVING NumStudents<MaxStudents) AS grp_types_open_not_full"
                   " WHERE GrpTypCod NOT IN"
-                  " (SELECT DISTINCT crs_grp_types.GrpTypCod FROM crs_grp_types,crs_grp,crs_grp_usr"
-                  " WHERE crs_grp_types.CrsCod='%ld' AND crs_grp_types.Mandatory='Y' AND crs_grp_types.GrpTypCod=crs_grp.GrpTypCod"
-                  " AND crs_grp.GrpCod=crs_grp_usr.GrpCod AND crs_grp_usr.UsrCod='%ld')",
+                  " (SELECT DISTINCT crs_grp_types.GrpTypCod"
+                  " FROM crs_grp_types,crs_grp,crs_grp_usr"
+                  " WHERE crs_grp_types.CrsCod='%ld'"
+                  " AND crs_grp_types.Mandatory='Y'"
+                  " AND crs_grp_types.GrpTypCod=crs_grp.GrpTypCod"
+                  " AND crs_grp.GrpCod=crs_grp_usr.GrpCod"
+                  " AND crs_grp_usr.UsrCod='%ld')",
             Gbl.CurrentCrs.Crs.CrsCod,
             (unsigned) Rol_STUDENT,
             Gbl.CurrentCrs.Crs.CrsCod,
@@ -2912,12 +2929,19 @@ static bool Grp_GetIfGrpIsAvailable (long GrpTypCod)
    /***** Get the number of types of group (0 or 1) of a type
           with one or more open groups with vacants, from database *****/
    sprintf (Query,"SELECT COUNT(DISTINCT GrpTypCod) FROM"
-                  " (SELECT crs_grp_types.GrpTypCod AS GrpTypCod,COUNT(*) AS NumStudents,crs_grp.MaxStudents as MaxStudents"
+                  " (SELECT crs_grp_types.GrpTypCod AS GrpTypCod,"
+                  "COUNT(*) AS NumStudents,"
+                  "crs_grp.MaxStudents as MaxStudents"
                   " FROM crs_grp_types,crs_grp,crs_grp_usr,crs_usr"
-                  " WHERE crs_grp_types.GrpTypCod='%ld' AND crs_grp_types.GrpTypCod=crs_grp.GrpTypCod"
-                  " AND crs_grp.Open='Y' AND crs_grp_types.CrsCod=crs_usr.CrsCod"
-                  " AND crs_grp.GrpCod=crs_grp_usr.GrpCod AND crs_grp_usr.UsrCod=crs_usr.UsrCod AND crs_usr.Role='%u'"
-                  " GROUP BY crs_grp.GrpCod HAVING NumStudents<MaxStudents) AS available_grp_types",
+                  " WHERE crs_grp_types.GrpTypCod='%ld'"
+                  " AND crs_grp_types.GrpTypCod=crs_grp.GrpTypCod"
+                  " AND crs_grp.Open='Y'"
+                  " AND crs_grp_types.CrsCod=crs_usr.CrsCod"
+                  " AND crs_grp.GrpCod=crs_grp_usr.GrpCod"
+                  " AND crs_grp_usr.UsrCod=crs_usr.UsrCod"
+                  " AND crs_usr.Role='%u'"
+                  " GROUP BY crs_grp.GrpCod"
+                  " HAVING NumStudents<MaxStudents) AS available_grp_types",
             GrpTypCod,(unsigned) Rol_STUDENT);
    NumGrpTypes = DB_QueryCOUNT (Query,"can not check if a type of group has available groups");
 
@@ -2940,19 +2964,27 @@ static void Grp_GetLstCodGrpsUsrBelongs (long CrsCod,long GrpTypCod,
 
    /***** Get groups which a user belong to from database *****/
    if (CrsCod < 0)		// Query the groups from all the user's courses
-      sprintf (Query,"SELECT GrpCod FROM crs_grp_usr"
+      sprintf (Query,"SELECT GrpCod"
+	             " FROM crs_grp_usr"
                      " WHERE UsrCod='%ld'",	// Groups will be unordered
                UsrCod);
    else if (GrpTypCod < 0)	// Query the groups of any type in the course
-      sprintf (Query,"SELECT crs_grp.GrpCod FROM crs_grp_types,crs_grp,crs_grp_usr"
-                     " WHERE crs_grp_types.CrsCod='%ld' AND crs_grp_types.GrpTypCod=crs_grp.GrpTypCod"
-                     " AND crs_grp.GrpCod=crs_grp_usr.GrpCod AND crs_grp_usr.UsrCod='%ld'"
+      sprintf (Query,"SELECT crs_grp.GrpCod"
+	             " FROM crs_grp_types,crs_grp,crs_grp_usr"
+                     " WHERE crs_grp_types.CrsCod='%ld'"
+                     " AND crs_grp_types.GrpTypCod=crs_grp.GrpTypCod"
+                     " AND crs_grp.GrpCod=crs_grp_usr.GrpCod"
+                     " AND crs_grp_usr.UsrCod='%ld'"
                      " ORDER BY crs_grp_types.GrpTypName,crs_grp.GrpName",
                Gbl.CurrentCrs.Crs.CrsCod,UsrCod);
    else				// Query only the groups of specified type in the course
-      sprintf (Query,"SELECT crs_grp.GrpCod FROM crs_grp_types,crs_grp,crs_grp_usr"
-                     " WHERE crs_grp_types.CrsCod='%ld' AND crs_grp_types.GrpTypCod='%ld' AND crs_grp_types.GrpTypCod=crs_grp.GrpTypCod"
-                     " AND crs_grp.GrpCod=crs_grp_usr.GrpCod AND crs_grp_usr.UsrCod='%ld'"
+      sprintf (Query,"SELECT crs_grp.GrpCod"
+	             " FROM crs_grp_types,crs_grp,crs_grp_usr"
+                     " WHERE crs_grp_types.CrsCod='%ld'"
+                     " AND crs_grp_types.GrpTypCod='%ld'"
+                     " AND crs_grp_types.GrpTypCod=crs_grp.GrpTypCod"
+                     " AND crs_grp.GrpCod=crs_grp_usr.GrpCod"
+                     " AND crs_grp_usr.UsrCod='%ld'"
                      " ORDER BY crs_grp.GrpName",
                Gbl.CurrentCrs.Crs.CrsCod,GrpTypCod,UsrCod);
    LstGrps->NumGrps = (unsigned) DB_QuerySELECT (Query,&mysql_res,"can not get the groups which a user belongs to");
@@ -2991,7 +3023,8 @@ void Grp_GetLstCodGrpsWithFileZonesIBelong (struct ListCodGrps *LstGrps)
    unsigned NumGrp;
 
    /***** Get groups which I belong to from database *****/
-   sprintf (Query,"SELECT crs_grp.GrpCod FROM crs_grp_types,crs_grp,crs_grp_usr"
+   sprintf (Query,"SELECT crs_grp.GrpCod"
+	          " FROM crs_grp_types,crs_grp,crs_grp_usr"
                   " WHERE crs_grp_types.CrsCod='%ld'"
                   " AND crs_grp_types.GrpTypCod=crs_grp.GrpTypCod"
                   " AND crs_grp.FileZones='Y'"
@@ -3196,11 +3229,12 @@ void Grp_RecFormNewGrp (void)
 
 static bool Grp_CheckIfGroupTypeNameExists (const char *GrpTypName,long GrpTypCod)
   {
-   char Query[512];
+   char Query[256 + Grp_MAX_BYTES_GROUP_TYPE_NAME];
 
    /***** Get number of group types with a name from database *****/
    sprintf (Query,"SELECT COUNT(*) FROM crs_grp_types"
-                  " WHERE CrsCod='%ld' AND GrpTypName='%s' AND GrpTypCod<>'%ld'",
+                  " WHERE CrsCod='%ld' AND GrpTypName='%s'"
+                  " AND GrpTypCod<>'%ld'",
             Gbl.CurrentCrs.Crs.CrsCod,GrpTypName,GrpTypCod);
    return (DB_QueryCOUNT (Query,"can not check if the name of type of group already existed") != 0);
   }
@@ -3211,7 +3245,7 @@ static bool Grp_CheckIfGroupTypeNameExists (const char *GrpTypName,long GrpTypCo
 
 static bool Grp_CheckIfGroupNameExists (long GrpTypCod,const char *GrpName,long GrpCod)
   {
-   char Query[512];
+   char Query[256 + Grp_MAX_BYTES_GROUP_NAME];
 
    /***** Get number of groups with a type and a name from database *****/
    sprintf (Query,"SELECT COUNT(*) FROM crs_grp"
@@ -3930,7 +3964,7 @@ void Grp_RenameGroupType (void)
    extern const char *Txt_The_type_of_group_X_already_exists;
    extern const char *Txt_The_type_of_group_X_has_been_renamed_as_Y;
    extern const char *Txt_The_name_of_the_type_of_group_X_has_not_changed;
-   char Query[1024];
+   char Query[128 + Grp_MAX_BYTES_GROUP_TYPE_NAME];
    char NewNameGrpTyp[Grp_MAX_BYTES_GROUP_TYPE_NAME + 1];
 
    /***** Get parameters from form *****/
@@ -3966,8 +4000,7 @@ void Grp_RenameGroupType (void)
          else
            {
             /* Update the table changing old name by new name */
-            sprintf (Query,"UPDATE crs_grp_types"
-        	           " SET GrpTypName='%s'"
+            sprintf (Query,"UPDATE crs_grp_types SET GrpTypName='%s'"
         	           " WHERE GrpTypCod='%ld'",
                      NewNameGrpTyp,
                      Gbl.CurrentCrs.Grps.GrpTyp.GrpTypCod);
@@ -4004,7 +4037,7 @@ void Grp_RenameGroup (void)
    extern const char *Txt_The_group_X_has_been_renamed_as_Y;
    extern const char *Txt_The_name_of_the_group_X_has_not_changed;
    struct GroupData GrpDat;
-   char Query[512];
+   char Query[128 + Grp_MAX_BYTES_GROUP_NAME];
    char NewNameGrp[Grp_MAX_BYTES_GROUP_NAME + 1];
 
    /***** Get parameters from form *****/
diff --git a/swad_layout.h b/swad_layout.h
index 28ac01354..70f9a2de8 100644
--- a/swad_layout.h
+++ b/swad_layout.h
@@ -36,7 +36,7 @@
 #define Lay_MAX_BYTES_ALERT (16 * 1024 - 1)	// Max. size for alert message
 // Important: the size of alert message must be enough large to store the longest message.
 
-#define Lay_MAX_BYTES_TITLE (1024 - 1)
+#define Lay_MAX_BYTES_TITLE (4096 - 1)
 
 #define Lay_HIDE_BOTH_COLUMNS	0						// 00
 #define Lay_SHOW_RIGHT_COLUMN	1						// 01