大约有 44,000 项符合查询结果（耗时：0.0192秒） [XML]
push multiple elements to array
... array2[2]) except a limitation of number of elements in array2 (about 100,000)
– vantrung -cuncon
Sep 6 at 21:12
...
Removing duplicate rows from table in Oracle
...
+1 I had to find two duplicate phone numbers buried in 12,000+ records. Changed the DELETE to SELECT and this found them in seconds. Saved me a ton of time, thank you.
– shimonyk
Sep 23 '10 at 15:30
...
Check if table exists without using “select from”
...
A performance comparison:
MySQL 5.0.77, on a db that has about 11,000 tables.
Selecting a non-recently-used table so it's not cached.
Averaged over 10 tries each. (Note: done with different tables to avoid caching).
322ms: show tables like 'table201608';
691ms: select 1 from table201608...
Making an iframe responsive
...is is exactly what i needed to allow the iframe to scroll, as it was over 5000px long. The other codes forced the long iFrame to be overlaid the below content.
– penmas
Sep 21 '17 at 18:44
...
Can't connect to local MySQL server through socket '/var/mysql/mysql.sock' (38)
...
I got the following error
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (111)
Tried several ways and finally solved it through the following way
sudo gksu gedit /etc/mysql/my.cnf
modified
#bind-address ...
All combinations of a list of lists
...') --> Ax Ay Bx By Cx Cy Dx Dy
# product(range(2), repeat=3) --> 000 001 010 011 100 101 110 111
pools = map(tuple, args) * kwds.get('repeat', 1)
result = [[]]
for pool in pools:
result = [x+[y] for x in result for y in pool]
for prod in result:
yield tuple(...
SQL statement to select all rows from previous day
...iff(day,1,GETDATE()),0) I get: 2016-02-01 10:27:54.733 2016-01-31 00:00:00.000
– KM.
Feb 1 '16 at 15:28
|
show 1 more comment
...
How to change text transparency in HTML/CSS?
...If you only want the text to be transparent, use rgba.
#foo {
color: #000; /* Fallback for older browsers */
color: rgba(0, 0, 0, 0.5);
font-size: 16pt;
font-family: Arial, sans-serif;
}
Also, steer far, far away from <font>. We have CSS for that now.
...
Convert a date format in PHP
...
What if I get this date 0000-00-00 from mySQL? it returns a wrong date like 31/12/1969 ...
– Enrique
Apr 29 '10 at 22:20
3
...
Get the cartesian product of a series of lists?
...') --> Ax Ay Bx By Cx Cy Dx Dy
# product(range(2), repeat=3) --> 000 001 010 011 100 101 110 111
pools = map(tuple, args) * kwds.get('repeat', 1)
result = [[]]
for pool in pools:
result = [x+[y] for x in result for y in pool]
for prod in result:
yield tuple(...