HQL very slow

SELECT
    CONCAT(t.javaType,
    'µ',
    t.systemName) as v,
    CASE
        WHEN SIZE(t.SQLDatabaseColumns) > 0 THEN CONCAT(t.systemName,
        ' (',
        SIZE(t.SQLDatabaseColumns),
        ')')
        ELSE t.systemName
    END as name
FROM
    SQLDatabaseType t
WHERE
    t.database.id = :db
ORDER BY
    SIZE(t.SQLDatabaseColumns) DESC,
    LENGTH(t.systemName) ASC,
    SUBSTR(t.systemName,
    1,
    1) DESC

SELECT
    CONCAT(t.javaType,
    'µ',
    t.systemName) as v,
    CASE
        WHEN SIZE(t.SQLDatabaseColumns) > 0 THEN CONCAT(t.systemName,
        ' (',
        SIZE(t.SQLDatabaseColumns),
        ')')
        ELSE t.systemName
    END as name
FROM
    SQLDatabaseType t
WHERE
    t.database.id = :db
ORDER BY
    SIZE(t.SQLDatabaseColumns) DESC,
    LENGTH(t.systemName) ASC,
    SUBSTR(t.systemName,
    1,
    1) DESC