大约有 44,000 项符合查询结果(耗时:0.0417秒) [XML]
Can I use CASE statement in a JOIN condition?
... 1. Your statement attempted to return the value of an assignment or test for equality, neither of which make sense in the context of a CASE/THEN clause. (If BOOLEAN was a datatype then the test for equality would make sense.)
...
MySQL Insert Where query
...1, 160, 145);
If you're trying to change the weight/desiredWeight values for an existing row with ID 1 you should be using:
UPDATE Users SET weight = 160, desiredWeight = 145 WHERE id = 1;
If you want you can also use INSERT .. ON DUPLICATE KEY syntax like so:
INSERT INTO Users (id, weight, de...
Get generated id after insert
...
@UnknownJoe I know this is old post. But may be helpful for someone. The row id and autoincremented id will be same even if it is deleted from middle.
– Raj kannan Iyyappan
Oct 4 '18 at 21:25
...
MYSQL OR vs IN performance
I am wondering if there is any difference in regards to performance between the following
14 Answers
...
Get current AUTO_INCREMENT value for any table
How do I get the current AUTO_INCREMENT value for a table in MySQL?
8 Answers
8
...
How to delete a certain row from mysql table with same column values?
...
@Paul This is exactly what I about to say. But don't forget unique key doesn't necessary means primary key.
– Ryan Fung
Oct 28 '15 at 7:11
...
Web API Routing - api/{controller}/{action}/{id} “dysfunctions” api/{controller}/{id}
...st matched rule, it will stop checking other rules and take this to search for controller and action.
So, you should:
Put your specific rules ahead of your general rules(like default), which means use RouteTable.Routes.MapHttpRoute to map "WithActionApi" first, then "DefaultApi".
Remove the de...
How did Google manage to do this? Slide ActionBar in Android application
... it's clicked, collapses the menu. So, here's some code:
First, the class for collapsing / expanding (SlideMenu.java):
package your.cool.app;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.Rect;
import android.util.Log;
import a...
LEFT JOIN only first row
I read many threads about getting only the first row of a left join, but, for some reason, this does not work for me.
6 Ans...
Python assigning multiple variables to same value? list behavior
...to reassign the values list separately, I mean b[0] and c[0] equal 0 as before.
9 Answers
...
