recently, I have been studying the scheme of sub-database and sub-database. I don t have much experience. If you have any questions, I will ask you for advice. for example, an order table with fields: placing an order for id, goods, id, store, id, iss...
every amount change of the user is recorded in this table. website users about 100W, now the table is too big, thought of sub-table, how to divide it? Table structure! user id is a 32-bit guid ...
to query the data after horizontal split, suppose the data of a business is split horizontally, and the monthly records are stored in a table. The data of each table is about 1000w. There are already more than 20 tables, such as table_201606,.,table_201...
problem description 1010: : : vuehtml: : if I remove: key= "index ", I will not report an error, but it should not be so. There is another problem. In the new process, the key name of the v-model binding of the form is the same, so the value ...
when traversing an array using Thymelaf loops in hmlt <div th:each="c : ${blog.categories}"> <span class="label label-primary" th:text="${c}">< span> < div> the display on the page is as follo...
how do I view the URL of the webview to which app jumped? There is no URL bar, so you can t see it like a browser, what should I do? ...
I put down a drag-and-drop sort plug-in written by native js, because the plug-in itself is a PC-side method and all the methods are mouse operations. I changed it to the mobile method and found that the event in ontouchmove does not have the attributes...
Gods, I just learned java multithreading has a problem there are two ways to create a thread the first myTest a = new myTest(out,"ccc"); new Thread(a).start(); new Thread(a).start(); the second type new Thread(new myTest(...