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 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 …

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= …

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 … …

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 …