大约有 8,200 项符合查询结果（耗时：0.0317秒） [XML]
Store query result in a variable using in PL/pgSQL
How to assign the result of a query to a variable in PL/pgSQL, the procedural language of PostgreSQL?
5 Answers
...
How to suppress Update Links warning?
I'm trying to write a script that opens many Excel files. I keep getting the prompt:
7 Answers
...
Is there a performance difference between a for loop and a for-each loop?
What, if any, is the performance difference between the following two loops?
16 Answers
...
Is the practice of returning a C++ reference variable evil?
This is a little subjective I think; I'm not sure if the opinion will be unanimous (I've seen a lot of code snippets where references are returned).
...
How do I determine whether my calculation of pi is accurate?
I was trying various methods to implement a program that gives the digits of pi sequentially. I tried the Taylor series method, but it proved to converge extremely slowly (when I compared my result with the online values after some time). Anyway, I am trying better algorithms.
...
Convert Rows to columns using 'Pivot' in SQL Server
I have read the stuff on MS pivot tables and I am still having problems getting this correct.
8 Answers
...
Preview layout with merge root tag in Intellij IDEA/Android Studio
Let's imagine we are developing compound component based on LinearLayout. So, we create class like this:
3 Answers
...
How can I find where I will be redirected using cURL?
...t quite get it to work right. I have a string that I want to send as a GET param to a server and get the resulting URL.
7 A...
Linux/Unix command to determine if process is running?
I need a platform independent (Linux/Unix|OSX) shell/bash command that will determine if a specific process is running. e.g. mysqld , httpd ...
What is the simplest way/command to do this?
...
Package objects
What are package objects, not so much the concept but their usage?
4 Answers
4
...