Fix query errors by allowing null values.

main/install/database.sql

@@ -4233,7 +4233,7 @@ CREATE TABLE IF NOT EXISTS c_lp_item (
   item_type      char(32)            not null default 'dokeos_document',
   ref            tinytext            not null default '',
   title          varchar(511)        not null,
-  description    varchar(511)        not null default '',
+  description    varchar(511)        default '',
   path           text                not null,
   min_score      float unsigned      not null default 0,
   max_score      float unsigned      default 100,
@@ -4470,7 +4470,7 @@ CREATE TABLE c_course_setting  (
   subkey      varchar(255) default NULL,
   type        varchar(255) default NULL,
   category    varchar(255) default NULL,
-  value       varchar(255) NOT NULL default '',
+  value       varchar(255) default '',
   title       varchar(255) NOT NULL default '',
   comment     varchar(255) default NULL,
   subkeytext  varchar(255) default NULL,
@@ -4729,5 +4729,5 @@ CREATE TABLE c_attendance_calendar_rel_group (
 
 -- Version
 LOCK TABLES settings_current WRITE;
-UPDATE settings_current SET selected_value = '1.10.0.26' WHERE variable = 'chamilo_database_version';
+UPDATE settings_current SET selected_value = '1.10.0.27' WHERE variable = 'chamilo_database_version';
 UNLOCK TABLES;

main/install/migrate-db-1.9.0-1.10.0-pre.sql

@@ -99,16 +99,18 @@ INSERT INTO settings_options (variable, value, display_text) VALUES ('enabled_ma
 
 ALTER TABLE c_survey ADD COLUMN visible_results INT UNSIGNED DEFAULT 0;
 ALTER TABLE c_survey_invitation ADD COLUMN group_id INT NOT NULL;
-,
 ALTER TABLE c_lp_item ADD COLUMN prerequisite_min_score float;
 ALTER TABLE c_lp_item ADD COLUMN prerequisite_max_score float;
+ALTER TABLE c_lp_item MODIFY COLUMN description VARCHAR(511) DEFAULT '';
 ALTER TABLE c_student_publication ADD COLUMN document_id int DEFAULT 0;
 ALTER TABLE c_group_info ADD COLUMN status tinyint DEFAULT 1;
 
+ALTER TABLE c_course_setting MODIFY COLUMN value varchar(255) default '';
+
 CREATE TABLE IF NOT EXISTS c_student_publication_rel_document (id  INT PRIMARY KEY NOT NULL AUTO_INCREMENT, work_id INT NOT NULL, document_id INT NOT NULL, c_id INT NOT NULL);
 CREATE TABLE IF NOT EXISTS c_student_publication_rel_user (id  INT PRIMARY KEY NOT NULL AUTO_INCREMENT, work_id INT NOT NULL, user_id INT NOT NULL, c_id INT NOT NULL);
 CREATE TABLE IF NOT EXISTS c_student_publication_comment (id INT PRIMARY KEY NOT NULL AUTO_INCREMENT, work_id INT NOT NULL, c_id INT NOT NULL, comment text, file VARCHAR(255), user_id int NOT NULL, sent_at datetime NOT NULL);
 CREATE TABLE IF NOT EXISTS c_attendance_calendar_rel_group (id int NOT NULL auto_increment PRIMARY KEY, c_id INT NOT NULL, group_id INT NOT NULL, calendar_id INT NOT NULL);
 
 -- Do not move this query
-UPDATE settings_current SET selected_value = '1.10.0.26' WHERE variable = 'chamilo_database_version';
+UPDATE settings_current SET selected_value = '1.10.0.27' WHERE variable = 'chamilo_database_version';