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How to select the nth row in a SQL database table?
... well.
Update: SQLite added window functions support in version 3.25.0 on 2018-09-15 so both forms also work in SQLite.
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How to convert a factor to integer\numeric without loss of information?
...mean median uq max neval
## as.numeric(levels(f))[f] 3.982 5.120 6.088624 5.405 5.974 1981.418 1e+05
## as.numeric(levels(f)[f]) 5.973 7.111 8.352032 7.396 8.250 4256.380 1e+05
## as.numeric(as.character(f)) 6.827 8.249 9.628264 8.534 9.671 1983.694 1e+05
## ...
CSS Input with width: 100% goes outside parent's bound
...emonstration in your specific context:
#mainContainer {
line-height: 20px;
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
background-color: rgba(0, 50, 94, 0.2);
margin: 20px auto;
display: table;
-moz-border-radius: 15px;
border-style: solid;
border-color: rgb(40, ...
How to change a span to look like a pre with CSS?
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edited Jun 2 '18 at 20:58
Dave F
1,15566 silver badges1414 bronze badges
answered Oct 20 '08 at 17...
What is the difference between ports 465 and 587?
...ver supports it and your ISP does not filter server's EHLO reply (reported 2014).
Port 25 is used by MTA to MTA communication (mail server to mail server). It may be used for client to server communication but it is not currently the most recommended. Standard SMTP port accepts email from other m...
搭建高可用mongodb集群（二）—— 副本集 - 大数据 & AI - 清泛网 - 专注C/...
...制台上显示副本集还没有配置初始化信息。
Sun Dec 29 20:12:02.953 [rsStart] replSet can't get local.system.replset config from self or any seed (EMPTYCONFIG)
Sun Dec 29 20:12:02.953 [rsStart] replSet info you may need to run replSetInitiate -- rs.initiate() in the shell -- if ...
JavaScript Nested function
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answered Sep 3 '11 at 20:28
zzzzBovzzzzBov
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Splitting a list into N parts of approximately equal length
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– LookAheadAtYourTypes
Nov 4 '17 at 14:20
Beautiful! Also, n can be made to work as batch_size by swapping k and n in th...
Is there an SQLite equivalent to MySQL's DESCRIBE [table]?
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20
This seems more equivalent to MySQL's describe than .schema tablename to me.
– tybro0103
Jun 25 '12 ...
How do I calculate the date six months from the current date using the datetime Python module?
...andling business rules and scenarios (say invoice generation etc.)
$ date(2010,12,31)+relativedelta(months=+1)
datetime.date(2011, 1, 31)
$ date(2010,12,31)+relativedelta(months=+2)
datetime.date(2011, 2, 28)
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