大约有 40,000 项符合查询结果（耗时：0.0501秒） [XML]
SQL UPDATE SET one column to be equal to a value in a related table referenced by a different column
...result set to update is before running the update (same query, just with a select):
select *
from QuestionTrackings q
inner join QuestionAnswers a
on q.AnswerID = a.AnswerID
where q.QuestionID is null -- and other conditions you might want
Particularly whether each answer id has definitely only 1...
How to use the C socket API in C++ on z/OS
...socklen_t sock_len;
private struct sockaddr_in server_addr;
public char *server_ip;
public unsigned short server_port;
};
Then have methods for opening, closing, and sending packets down the socket.
For example, the open call might look something like this:
int my_socket_connect()
{
...
Combining C++ and C - how does #ifdef __cplusplus work?
...for functions with names like _Z1hic when you were looking for void h(int, char)
5: This sort of mixing is a common reason to use extern "C", and I don't see anything wrong with doing it this way -- just make sure you understand what you are doing.
...
Filter by property
...ral models, and this routine should work for all models. And it does:
def selectByProperties(modelType, specify):
clause = "SELECT * from %s" % modelType._meta.db_table
if len(specify) > 0:
clause += " WHERE "
for field, eqvalue in specify.items():
clause += ...
What is the default value for enum variable?
...
Thanks, and what about enums defined with char instead of int. e.g. enum Status { Active = 'A', Inactive='I'}
– Fernando Torres
Apr 24 '15 at 16:17
...
Removing an element from an Array (Java) [duplicate]
... the case when the element is not in the array.
Hope that helps!
public char[] remove(char[] symbols, char c)
{
for (int i = 0; i < symbols.length; i++)
{
if (symbols[i] == c)
{
char[] copy = new char[symbols.length-1];
System.arraycopy(symbols, ...
Copy a file in a sane, safe and efficient way
...ing with the file system:
#include <copyfile.h>
int
copyfile(const char *from, const char *to, copyfile_state_t state, copyfile_flags_t flags);
share
|
improve this answer
|
...
UUID max character length
... primary key for out oracle DB, and trying to determine an appropriate max character length for the VARCHAR. Apparently this is 36 characters but we have noticed UUID'S generated which are longer than this - up to 60 characters in length.
Does anyone know a suitable max char length for UUID??
...
PHP code to convert a MySQL query to CSV [closed]
...
SELECT * INTO OUTFILE "c:/mydata.csv"
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"'
LINES TERMINATED BY "\n"
FROM my_table;
(the documentation for this is here: http://dev.mysql.com/doc/refman/5.0/en/select.html)
or:...
How to get the full path of running process?
...
// include the namespace
using System.Management;
var wmiQueryString = "SELECT ProcessId, ExecutablePath, CommandLine FROM Win32_Process";
using (var searcher = new ManagementObjectSearcher(wmiQueryString))
using (var results = searcher.Get())
{
var query = from p in Process.GetProcesses()
...