大约有 41,000 项符合查询结果（耗时：0.0302秒） [XML]
SQL/mysql - Select distinct/UNIQUE but return all columns?
...
You're looking for a group by:
select *
from table
group by field1
Which can occasionally be written with a distinct on statement:
select distinct on field1 *
from table
On most platforms, however, neither of the above will work because the behavior o...
Git serve: I would like it that simple
... it down and start it back up too fast.
You can put this into a batch script with an easy to remember name like "gitserve", so you don't need to type it all out again. As suggested in some of the comments, in recent versions of Git you can add an alias to the Git config:
[alias]
serve = !git...
How do I trim leading/trailing whitespace in a standard way?
... allocated. The return
// value must NOT be deallocated using free() etc.
char *trimwhitespace(char *str)
{
char *end;
// Trim leading space
while(isspace((unsigned char)*str)) str++;
if(*str == 0) // All spaces?
return str;
// Trim trailing space
end = str + strlen(str) - 1;
...
The required anti-forgery form field “__RequestVerificationToken” is not present Error in user Regis
I am using Membership.create user function, then the following error is occurring,
19 Answers
...
Is there any way to post events to Google Analytics via server-side API? [closed]
...acking ID / Web Property ID
$aParams['tid'] = $sGaId;
//Anonymize IP
$aParams['aip'] = '1';
//Data Source
$aParams['ds'] = 'web';
//Queue Time
$aParams['qt'] = 0;
//Client ID
$aParams['cid'] = substr(md5($_SERVER['REMOTE_ADDR'].$_SERVER['HTTP_USER_AGENT']), 0,...
Can I embed a custom font in an iPhone application?
...Full name" of the font, which is visible by opening it up in Font Book and selecting: Preview --> Show Font Info
– electromaggot
Nov 20 '11 at 8:16
add a comment
...
How do I get textual contents from BLOB in Oracle SQL
...S of the text stored in the BLOB, CS of the database used for VARCHAR2) :
select utl_raw.cast_to_varchar2(dbms_lob.substr(BLOB_FIELD)) from TABLE_WITH_BLOB where ID = '<row id>';
share
|
imp...
Printing hexadecimal characters in C
I'm trying to read in a line of characters, then print out the hexadecimal equivalent of the characters.
7 Answers
...
Downloading MySQL dump from command line
...backup.sql
You can even go as far as auto-compressing the output using gzip (if your DB is very big):
$ mysqldump -u [uname] -p db_name | gzip > db_backup.sql.gz
If you want to do this remotely and you have the access to the server in question, then the following would work (presuming the...
Delete column from SQLite table
... TRANSACTION;
CREATE TEMPORARY TABLE t1_backup(a,b);
INSERT INTO t1_backup SELECT a,b FROM t1;
DROP TABLE t1;
CREATE TABLE t1(a,b);
INSERT INTO t1 SELECT a,b FROM t1_backup;
DROP TABLE t1_backup;
COMMIT;
share
|
...