Project applies Druid+Sharding JDBC to split a table, product_0, product_1,product_2. but only the logical table name can be seen under Druid monitoring. Product, cannot see the actual physical table name and UNKNOWN appears under the fields item. As...
javax.persistence.PersistenceException: org.hibernate.HibernateException: The database returned no natively generated identity value at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:149) at org.hibernate.inter...
some table in mysql, constantly inserting new data. But to prevent it from getting bigger, you need to execute the delete from statement at the same time to delete the old data before a certain point in time. now the problem is, when deleting, do not ...
< H2 > how do PHP parent class methods access subclass properties? < H2 > A $name B A A () ? <?php class A { private static $name = "A"; public static function test() { echo self::$name; } } class B...
there is a question. If you add Sphinx search to a PHP program, such as a website made by laravel, do you use SphinxQL or SphinxAPI? Applications can access Sphinx search daemon (searchd) using any of the three different access methods: a) via Sphinx o...
what should I do if I want to display a vue component in each page of tab in iview, and tab is dynamically rendered (in the form of a new tab in a browser window, but in a single-page application)? <div> <Tabs type="card" c...
public void print(Object, String ... args){ for(int i = 0 ; i < args.length; iPP){ println(args[i]); } } now there is an array String [] p1 = { "Xiaoming ", "Xiao Hong ", "Xiaohua "} String [] p2 = { "Xiaomi ", "Samsung "...