大约有 13,000 项符合查询结果(耗时:0.0294秒) [XML]

https://stackoverflow.com/ques... 

Oracle find a constraint

... select * from all_constraints where owner = '<NAME>' and constraint_name = 'SYS_C00381400' / Like all data dictionary views, this a USER_CONSTRAINTS view if you just want to check your current schema and a DBA_CONSTRA...
https://stackoverflow.com/ques... 

MySQL case sensitive query [duplicate]

...ing for 'value'. However it will return 'VALUE', 'value', 'VaLuE', etc… SELECT * FROM `table` WHERE `column` = 'value' The good news is that if you need to make a case-sensitive query, it is very easy to do using the BINARY operator, which forces a byte by byte comparison: SELECT * FROM `table...
https://stackoverflow.com/ques... 

Disabled form fields not submitting data [duplicate]

...entioned: READONLY does not work for <input type='checkbox'> and <select>...</select>. If you have a Form with disabled checkboxes / selects AND need them to be submitted, you can use jQuery: $('form').submit(function(e) { $(':disabled').each(function(e) { $(this).rem...
https://stackoverflow.com/ques... 

How can I add comments in MySQL?

...es of commenting are supported Hash base single line commenting using # Select * from users ; # this will list users Double Dash commenting using -- Select * from users ; -- this will list users Note : Its important to have single white space just after -- 3) Multi line commenting using ...
https://www.tsingfun.com/it/cpp/1430.html 

LVN_ITEMCHANGED通知会响应多次的问题 - C/C++ - 清泛网 - 专注C/C++及内核技术

... 0x0008 #define LVIS_FOCUSED 0x0001 #define LVIS_SELECTED 0x0002 // 在CListCtrl派生类中响应LVN_ITEMCHANGED消息 void CNewListCtrl::OnItemchanged(NMHDR* pNMHDR, LRESULT* pResult) { NMLISTVIEW* pNMListView = (NMLISTVIEW*)pNMHDR; // TODO: Add your c...
https://www.tsingfun.com/it/da... 

SQL中使用update inner join和delete inner join;Oracle delete join替代...

... 下面是Oracle的: Sql代码 DELETE TABLE1 where KHID exists ( select KHID from table2 where FWDWID=8) Sql代码 DELETE TABLE1 where exists ( select 1 from table2 where and table1.khid=table2.khid and FWDWID=8); Oracle的delete与join如何使用 delete from A where sid i...
https://www.tsingfun.com/it/da... 

Oracle 分组后取每组第一条数据 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术

...据Oracle 分组后取每组第一条数据的SQL如下,亲测有效:SELECT * FROM (SELECT ROW_NUMBER() OVER(PARTITION BY T field1, T Oracle 分组后取每组第一条数据的SQL如下,亲测有效: SELECT * FROM (SELECT ROW_NUMBER() OVER(PARTITION BY T.field1, T.field2 ORDER...
https://stackoverflow.com/ques... 

What are the differences between Rust's `String` and `str`?

...at can modify a &mut str in place, mostly those that handle only ASCII characters, like make_ascii_uppercase. 2 Dynamically sized types allow things like Rc<str> for a sequence of reference counted UTF-8 bytes since Rust 1.2. Rust 1.21 allows easily creating these types. ...
https://stackoverflow.com/ques... 

How I can I lazily read multiple JSON values from a file/stream in Python?

... end_pos = int(re.match('Extra data: line \d+ column \d+ .*\(char (\d+).*\)', e.args[0]).groups()[0]) json_str = f.read(end_pos) obj = json.loads(json_str) start_pos += end_pos yield obj...
https://stackoverflow.com/ques... 

Want to find records with no associated records in Rails

... get everyone with no friends in the first case: Person.where('id NOT IN (SELECT DISTINCT(person_id) FROM friends)') share | improve this answer | follow | ...