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Where are my postgres *.conf files?
... # analyze
#autovacuum_vacuum_scale_factor = 0.2 # fraction of table size before vacuum
#autovacuum_analyze_scale_factor = 0.1 # fraction of table size before analyze
#autovacuum_freeze_max_age = 200000000 # maximum XID age before forced vacuum
# (change requires re...
Is it correct to use DIV inside FORM?
...l. You can try it yourself at a HTML validator. Besides, it is almost inevitable these days, since the modern pages are build on div's. If it was not allowed, a simple wrapper or placing the form in a container would already make the page invalid.
– Nrzonline
S...
How to Join to first row
...
Excellent, that works; moving TOP 1 from derived table clause to join clause.
– Ian Boyd
Jan 11 '10 at 16:54
111
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How do I use pagination with Django class based generic ListViews?
...ginated, page_obj, and paginator).
{# .... **Normal content list, maybe a table** .... #}
{% if car_list %}
<table id="cars">
{% for car in car_list %}
<tr>
<td>{{ car.model }}</td>
<td>{{ car.year }}</td>
...
How to concatenate columns in a Postgres SELECT?
I have two string columns a and b in a table foo .
8 Answers
8
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Count number of rows within each group
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An old question without a data.table solution. So here goes...
Using .N
library(data.table)
DT <- data.table(df)
DT[, .N, by = list(year, month)]
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Entity Framework and SQL Server View
...s solving performance issues using Tillito solution. Lets say you have the table:
Create table OrderDetail
(
Id int primary key,
CustomerId int references Customer(Id),
Amount decimal default(0)
);
Create index ix_customer on OrderDetail(CustomerId);
and your view...
Can I create a named default constraint in an add column statement in SQL Server?
In SQL Server, I have a new column on a table:
4 Answers
4
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Max parallel http connections in a browser?
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A similar table can be found at http://sgdev-blog.blogspot.com/2014/01/maximum-concurrent-connection-to-same.html
– Jo.
Aug 26 '15 at 17:21
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AJAX POST and Plus Sign ( + ) — How to Encode?
...de);
$code= preg_replace("[\{0\}]","+",$code);
mysql_query("update table set code= '" . mysql_real_escape_string($code) . "' where pid='$pid'");
}
?>
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