Supplement: How to determine the path of the psql configuration file
①Switch to the psql user, here is thunisoft.
② There are many ways to determine the path, here are some commonly use
Tag: problem
PostgreSQL – Postgres Query Optimization
Below are two almost identical postgres queries, but produced very different query plans and execution times. I assume that the first query is fast because form_id =’W40′ is only 196 Form_instance
CONTROLS attribute and small exercise in inheriting Tshape class (using Tshape can solve many graphics issues)
The renderings of this example:
Code file:
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, ExtCtrls;
Cocos Android packaging problem
One. Multi-platform architecture packaging so file
Add the following code to the application.mk file, where TARGET_CPU_API represents the target cpu and APP_ABI represents the compilation
4 common cache problems and solutions
Foreword Using cache can alleviate the pressure of large traffic, significantly Improve the performance of the program. When we use the cache system, especially in the case of large concurrency
iPad iframe high problem solving experience
Currently, the applications are getting wider and wider, and IE is no longer dominating the world, which brings opportunities and challenges to developers.
A problem of iframe being raised on
.NET (C #) Time Date String (String) Format Convert to DateTime Abnormal Announcement
The original text goes to: https://www.cjavapy.com/article/310/
1) Convert.ToDateTime(string)
string The format is required and must be yyyy-MM- dd hh:mm:ss
2) DateTime.ParseExact