for example, I always thought that select * from table where index column = xx and AMISOM column = yy must take the index of index column. but today I found that is not the case . tested (MySQL 5.6.16): when the union condition can match to th...
question 1 is the transmission between master and slave databases encrypted? If not, can it be set manually? question 2 can I configure the master-slave database in this way? Master database is placed in the cloud, such as Ali; slave databa...
Table relationship: question: how to query the data shown in the figure using native sql statements? expected data structure (the list item of the product appears as a nested object): { "category": [ { "id": 1,...
function creatOneSnow(){ var leftX = Math.random()*window.innerWidth; var topY = Math.random()*window.innerHeight; var snowDiv = document.createElement("div"); snowDiv.style.position = "fixed"; snowDiv.style.left =...
downloaded the btcpool source code, want to run on ubuntu16.04, but compiled ~! is there really a problem with the source code? Has anyone ever encountered this problem? who has the experience of successfully compiling btcpool source code? PPPPPP...
In the scenario, the front end uploads the file to node api,api through xhr and calls the upload method put of Aliyun oss sdk (or multipart), Aliyun is responsible for uploading the file to oss.. Well, the problem is that when the front end monitors the...