3604:川本産業

What is SQL Warning Code: 3604, SQLState: S0000 – Stack …
I see a lot of following warnings in my log file: WARN SqlExceptionHelper:232 – SQL Warning Code: 3604, SQLState: S0000 WARN SqlExceptionHelper:233 – Duplicate key was ignored. What does they mean? I …

c# – .Net8 primary constructors and fields with default values …
I want to migrate from .Net6 to .Net8 and use primary constructors. It works super nice with normal dependency injection, but I don't know what to do if I have a field, which just uses a default …

How to prevent DBCC TRACEON/OFF informational messages …
I am not sure this is the appropriate place to post this question, although I arrive to it in the context of writing a relatively complex SQL query. If it is not, please accept my apologies and, if…

What are the special dollar sign shell variables? – Stack Overflow
In Bash, there appear to be several variables which hold special, consistently-meaning values. For instance, ./myprogram &; echo $! will return the PID of the process which backgrounded myprog…

请问现在几大浏览器到底哪个好用？ – 知乎
个人建议：用火狐浏览器（可以用 Firefox Developer Edition），自研内核，速度快，功能强。 Chrome也很好，但是有几个地方有缺陷： 1 谷歌旗下的产品，很多中国用不了，反映在Chrome上，就包括了无法进入插件市场等各类问题。 2 Chrome的资源占有过大。 3 火狐浏览器在用户体验上明显花了更多心思，包括 … …

How to concatenate string variables in Bash – Stack Overflow
foo="Hello" foo="${foo} World" echo "${foo}" > Hello World In general to concatenate two variables you can just write them one after another: a='Hello' b= …

Generate insert script for selected records? – Stack Overflow
@jyao Correct, this does not give an insert query. What I did was I exported the data to a new temporary table that I made and then generated a Data script from there using the Generate Scripts option …

What is polymorphism, what is it for, and how is it used?
What is polymorphism, what is it for, and how is it used?How do you learn something? No-one came into this world knowing PHP OOP and design patterns, so all of you at some point had to learn it, at co …