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Why does MYSQL higher LIMIT offset slow the query down?
...; lastid.) It doesn't matter if it's the primary key, or another field (or group of fields.)
– Eloff
Sep 16 '13 at 14:14
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Insert picture into Excel cell [closed]
... the Insert tab.
Click on the Pictures option (it’s in the illustrations group).
In the ‘Insert Picture’ dialog box, locate the pictures that you
want to insert into a cell in Excel.
Click on the Insert button.
Re-size the picture/image so that it can fit perfectly within the
cell.
Place t...
How do I strip non alphanumeric characters from a string and keep spaces?
...
Add spaces to the negated character group:
@search_query = @search_query.gsub(/[^0-9a-z ]/i, '')
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Meteor test driven development [closed]
...ed. Xolv.io is focusing their efforts on Chimp, and the Meteor Development Group must choose an official testing framework.
Update: Velocity is Meteor's official testing solution as of 0.8.1.
Not much has been written about automated testing with Meteor at this time. I expect the Meteor communit...
How to get a vertical geom_vline to an x-axis of class date?
Even though I found Hadley's post in the google group on POSIXct and geom_vline , I could not get it done. I have a time series from and would like to draw a vertical line for years 1998, 2005 and 2010 for example. I tried with ggplot and qplot syntax, but still I either see no vertical line ...
sed error: “invalid reference \1 on `s' command's RHS”
...ocation of sed searches for a literal (<digit>) and is not a capture group.
– Andrew Falanga
Mar 24 '16 at 14:58
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新浪是如何分析处理32亿条实时日志的？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
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我们起初采用官方Kibana v3，用户提出的类似SQL中的多个group by，画百分比，求指定区间占比等常见需求无法满足。之后通过三斗大神(微博@argv)定制版的Kibana 3满足了一些用户需求。Kibana 4诞生后，代码几乎是对Kibana3的重写，做...
Postgres unique constraint vs index
...onstraint will automatically create a unique B-tree index on the column or group of columns listed in the constraint. A uniqueness restriction covering only some rows cannot be written as a unique constraint, but it is possible to enforce such a restriction by creating a unique partial index.
Note: ...
Terminating a script in PowerShell
...hat labeled loop even if the Break command is called within several nested groups within that labeled loop.
While ($true) {
# Code here will run
:myLabel While ($true) {
# Code here will run
While ($true) {
# Code here will run
While ($true) {
...
What is console.log?
...ce go to http://getfirebug.com/logging and I suggest you read it. (Traces, groups, profiling, object inspection).
Hope this helps!
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