大约有 43,124 项符合查询结果（耗时：0.0210秒） [XML]
What's the difference between RANK() and DENSE_RANK() functions in oracle?
...
10 Answers
10
Active
...
MySQL selecting yesterday's date
...
168
The simplest and best way to get yesterday's date is:
subdate(current_date, 1)
Your query w...
How to remove leading and trailing whitespace in a MySQL field?
...
11 Answers
11
Active
...
逆向工程——二进制炸弹(CSAPP Project) - 操作系统(内核) - 清泛网 - 专注...
...了一下，差不多几十页的样子，发现其中有六个函数phase_1……phase_6，基本上也就可以确定就是这六个关卡了。
===============phase_1===============
知识点：string，函数调用，栈
用了差不多一个星期断断续续地寻找感觉的phase_1，最...
SQL: How to properly check if a record exists
...
It's better to use either of the following:
-- Method 1.
SELECT 1
FROM table_name
WHERE unique_key = value;
-- Method 2.
SELECT COUNT(1)
FROM table_name
WHERE unique_key = value;
The first alternative should give you no result or one result, the second count should be zero or...
How to convert 1 to true or 0 to false upon model fetch
...th true or false into a boolean/tinyint field in the database, which uses 1 or 0 .
4 Answers
...
Highlight the difference between two strings in PHP
...
13 Answers
13
Active
...
Remap values in pandas column with a dict
I have a dictionary which looks like this: di = {1: "A", 2: "B"}
10 Answers
10
...