two fields are aggregated. The first is a normal field user_id, and the second is a date. Date, date needs to be aggregated according to fuzzy aggregation. For example, if the date is 2018-02-15, the data of aggregate user_id,2018-02 is the GROUP BY of ...
I now provide interfaces to the front end. When designing an API, should I try to complete an operation in one API or split it into multiple API? for example, do a function to upload a picture, upload the picture to the file and return it to url, an...
there are multiple items under an order. The order object is stored in the form of nested, and an order is a piece of data. order 1-> Commodity A, Commodity B, Commodity C, Commodity D order 2-> Commodity A, Commodity B, Commodity C, Commodity D. or...
to make an educational Mini Game , there is a 5 6 matrix, as shown in the following figure 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 want to randomly select a point from the matrix, take this point...
problem description the Spring Boot project failed to publish to Apache Tomcat 7.0.57, but the Apache Tomcat 7.0.77 published locally was successful, and there are many differences between the Tomcat on the server and the local one. Local Tomcat To...
can the store, passed in the Provider in redux be accepted by the grandchild component, or can it only be passed to the child component ...
Click the service registration mode box to automatically pop up Click cancel or Save the mode box to close the manually close the page, click on the service registration mode box again will not automatically pop up what is the reason? ...
The extension class inherits from a method behavior of the base class, and then if you want to perform this behavior of the base class again, adding a reference to the base class before your own behavior, why add a parenthesis after super? just write s...