update script migration utf8 to utf8mb4 for mariadb

updates/db-patch-mysql-utf8.sh

@@ -7,18 +7,21 @@ read db_pass
 
 C_TABLES=$(mysql -u root -p ${db_name} --password=${db_pass} -B -N -e "SHOW TABLES")
 
+echo "Stage 1. CHange charset for tables"
 echo "${C_TABLES}" | awk '{print "SET foreign_key_checks = 0; ALTER TABLE", $1, "CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci; SET foreign_key_checks = 1; "}' >migration_utf8
 echo "ALTER DATABASE ${db_name} CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;">>migration_utf8
+mysql -u root -p ${db_name} --password=${db_pass} < migration_utf8
+echo "Stage 1 - Done"
+>migration_utf8
+echo "Stage 2. Revert filed type to TEXT"
 echo "${C_TABLES}" | while read table; do
 mysql -u root -p ${db_name} --password=${db_pass} -e "show create table ${table}" | sed 's/\\n/\n/g' | egrep -i "[[:space:]]MEDIUMTEXT[[:space:]]" | awk '{ print $1 }' | while read c_field; do
-    echo "ALTER TABLE $table MODIFY $c_field TEXT NULL" >>migration_utf8
+    echo "ALTER TABLE $table MODIFY $c_field TEXT;" >>migration_utf8
     done
 done
-
-exit
-
-
 mysql -u root -p ${db_name} --password=${db_pass} < migration_utf8
+echo "Stage2 - Done"
+
 rm -f migration_utf8
 
 exit