diff -r 3b9abdae181e -r 84091b9cb800 src/MainWindow.cpp
--- a/src/MainWindow.cpp	Sat Jun 01 21:10:54 2024 +0200
+++ b/src/MainWindow.cpp	Sat Jun 08 15:54:30 2024 +0200
@@ -164,7 +164,8 @@
  */
 void MainWindow::updateDataBase()
 {
-    QSqlQuery query1, query2, query4;
+    QSqlQuery query, query2, query4;
+    QString sql;
     int	count = 0;
     bool added_packs = false;
 
@@ -174,7 +175,7 @@
      * Version 0.4.0.
      * Make sure we have the inventory_yeastpack with initial records.
      */
-    query1.exec("CREATE TABLE IF NOT EXISTS `inventory_yeastpack` ("
+    query.exec("CREATE TABLE IF NOT EXISTS `inventory_yeastpack` ("
   		"`record` int(11) NOT NULL AUTO_INCREMENT,"
   		"`uuid` varchar(36) NOT NULL,"
   		"`laboratory` varchar(128) NOT NULL,"
@@ -192,25 +193,25 @@
 		"UNIQUE KEY `package` (`laboratory`,`form`,`package`),"
   		"KEY `lab_form` (`laboratory`,`form`) USING BTREE"
 		") ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='Yeast packages data'");
-    if (query1.lastError().isValid()) {
-	qWarning() << "  create inventory_yeastpack" << query1.lastError();
+    if (query.lastError().isValid()) {
+	qWarning() << "  create inventory_yeastpack" << query.lastError();
     } else {
-	query1.exec("SELECT DISTINCT laboratory,form FROM inventory_yeasts");
-	while (query1.next()) {
+	query.exec("SELECT DISTINCT laboratory,form FROM inventory_yeasts");
+	while (query.next()) {
 	    query2.prepare("SELECT record FROM inventory_yeastpack WHERE laboratory=:laboratory AND form=:form");
-	    query2.bindValue(":laboratory", query1.value("laboratory").toString());
-	    query2.bindValue(":form", query1.value("form").toInt());
+	    query2.bindValue(":laboratory", query.value("laboratory").toString());
+	    query2.bindValue(":form", query.value("form").toInt());
 	    query2.exec();
 	    if (! query2.first()) {
-	    	qDebug() << "  add yeastpack" << query1.value("laboratory").toString() << query1.value("form").toInt();
+	    	qDebug() << "  add yeastpack" << query.value("laboratory").toString() << query.value("form").toInt();
 
 	    	query4.prepare("INSERT INTO inventory_yeastpack SET uuid=:uuid, laboratory=:laboratory, "
 			   "form=:form, package=:package, viability=:viability, max=:max");
 	    	query4.bindValue(":uuid", QUuid::createUuid().toString().mid(1, 36));
-	    	query4.bindValue(":laboratory", query1.value("laboratory").toString());
-	    	query4.bindValue(":form", query1.value("form").toInt());
-	    	query4.bindValue(":package", g_yeast_forms[query1.value("form").toInt()]);
-		switch (query1.value("form").toInt()) {
+	    	query4.bindValue(":laboratory", query.value("laboratory").toString());
+	    	query4.bindValue(":form", query.value("form").toInt());
+	    	query4.bindValue(":package", g_yeast_forms[query.value("form").toInt()]);
+		switch (query.value("form").toInt()) {
 		    case YEAST_FORMS_LIQUID:	query4.bindValue(":viability", 0.80);
 						query4.bindValue(":max", 97);
 						break;
@@ -234,6 +235,52 @@
     	}
     }
 
+    /*
+     * Version 0.4.6
+     * Upgrade database extra columns for target water.
+     */
+    query.exec("SHOW COLUMNS FROM `products` LIKE 'tw_name'");
+    if (! query.first()) {
+	qWarning() << "updateDataBase: products with target water";
+	sql = "ALTER TABLE `products` ADD `tw_name` VARCHAR(64) CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci NULL AFTER `calc_acid`, ";
+	sql.append("ADD `tw_calcium` FLOAT NOT NULL DEFAULT '0' AFTER `tw_name`, ");
+	sql.append("ADD `tw_sulfate` FLOAT NOT NULL DEFAULT '0' AFTER `tw_calcium`, ");
+	sql.append("ADD `tw_chloride` FLOAT NOT NULL DEFAULT '0' AFTER `tw_sulfate`, ");
+	sql.append("ADD `tw_sodium` FLOAT NOT NULL DEFAULT '0' AFTER `tw_chloride`, ");
+	sql.append("ADD `tw_magnesium` FLOAT NOT NULL DEFAULT '0' AFTER `tw_sodium`, ");
+	sql.append("ADD `tw_total_alkalinity` FLOAT NOT NULL DEFAULT '0' AFTER `tw_magnesium`, ");
+	sql.append("ADD `tw_ph` FLOAT NOT NULL DEFAULT '7' AFTER `tw_total_alkalinity`, ");
+	sql.append("ADD `eq_HLT_volume` FLOAT NOT NULL DEFAULT '20' AFTER `eq_chiller_loss`, ");
+        sql.append("ADD `eq_HLT_deadspace` FLOAT NOT NULL DEFAULT '2' AFTER `eq_HLT_volume`;");
+//	qDebug() << sql;
+	query.exec(sql);
+	if (query.lastError().isValid()) {
+            qWarning() << "  ALTER products" << query.lastError();
+	} else {
+	    count++;
+	}
+    }
+
+    /*
+     * Version 0.4.6
+     * Add HLT fields to equipments
+     */
+    query.exec("SHOW COLUMNS FROM `inventory_equipments` LIKE 'HLT_volume'");
+    if (! query.first()) {
+        qWarning() << "updateDataBase: inventory_equipments with HLT";
+	sql = "ALTER TABLE `inventory_equipments` ADD `HLT_volume` FLOAT NOT NULL DEFAULT '20' AFTER `chiller_lpm`, ";
+	sql.append("ADD `HLT_deadspace` FLOAT NOT NULL DEFAULT '2' AFTER `HLT_volume`;");
+//	qDebug() << sql;
+	query.exec(sql);
+        if (query.lastError().isValid()) {
+            qWarning() << "  ALTER inventory_equipments" << query.lastError();
+        } else {
+            count++;
+	    QMessageBox::information(this, tr("Equipments upgrade"),
+			tr("The Equipents database has two new HLT fields.\nPlease check the Inventory->Equipents records"));
+	}
+    }
+
     qDebug() << "updateDatabase()" << count << "updates";
 }