大约有 47,000 项符合查询结果(耗时:0.0307秒) [XML]

https://stackoverflow.com/ques... 

How do I list all tables in a schema in Oracle SQL?

... schema, you need to have one or more of the following system privileges: SELECT ANY DICTIONARY (SELECT | INSERT | UPDATE | DELETE) ANY TABLE or the big-hammer, the DBA role. With any of those, you can select: SELECT DISTINCT OWNER, OBJECT_NAME FROM DBA_OBJECTS WHERE OBJECT_TYPE = 'TABLE' ...
https://stackoverflow.com/ques... 

Difference between two dates in MySQL

... SELECT TIMEDIFF('2007-12-31 10:02:00','2007-12-30 12:01:01'); -- result: 22:00:59, the difference in HH:MM:SS format SELECT TIMESTAMPDIFF(SECOND,'2007-12-30 12:01:01','2007-12-31 10:02:00'); -- result: 79259 the differenc...
https://stackoverflow.com/ques... 

Are PDO prepared statements sufficient to prevent SQL injection?

.... $pdo->query('SET NAMES gbk'); $var = "\xbf\x27 OR 1=1 /*"; $query = 'SELECT * FROM test WHERE name = ? LIMIT 1'; $stmt = $pdo->prepare($query); $stmt->execute(array($var)); In certain circumstances, that will return more than 1 row. Let's dissect what's going on here: Selecting a Cha...
https://stackoverflow.com/ques... 

SQL: capitalize first letter only [duplicate]

...t only for displaying and do not need the actual data in table to change: SELECT UPPER(LEFT(word,1))+LOWER(SUBSTRING(word,2,LEN(word))) FROM [yourtable] Hope this helps. EDIT: I realised about the '-' so here is my attempt to solve this problem in a function. CREATE FUNCTION [dbo].[CapitalizeFi...
https://stackoverflow.com/ques... 

Change select box option background color

I have a select box and I'm trying to change the background color of the options when the select box has been clicked and shows all the options. ...
https://stackoverflow.com/ques... 

Distinct in Linq based on only one field of the table

... Try this: table1.GroupBy(x => x.Text).Select(x => x.FirstOrDefault()); This will group the table by Text and use the first row from each groups resulting in rows where Text is distinct. ...
https://stackoverflow.com/ques... 

Datetime equal or greater than today in MySQL

... SELECT * FROM users WHERE created >= CURDATE(); But I think you mean created < today share | improve this answer ...
https://stackoverflow.com/ques... 

Select by partial string from a pandas DataFrame

...ns of which 2 contain string values. I was wondering if there was a way to select rows based on a partial string match against a particular column? ...
https://www.tsingfun.com/it/da... 

ORACLE 常用日期函数 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术

...的日期。如果给出一负数,返回值日期之前几个月日期。select add_months(to_date(&...ADD_MONTHS函数在输入日期上加上指定的几个月返回一个新的日期。如果给出一负数,返回值日期之前几个月日期。 select add_months(to_date('20150201','yyyymmd...
https://stackoverflow.com/ques... 

How does MySQL process ORDER BY and LIMIT in a query?

...e LIMIT clause can be used to constrain the number of rows returned by the SELECT statement. LIMIT takes one or two numeric arguments, which must both be nonnegative integer constants (except when using prepared statements). With two arguments, the first argument specifies the offset of the first ...