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How to read multiple text files into a single RDD?
...Dirs,320) it leads to 19430 total tasks instead of 320 ... it behaves like union which also leads to insane number of tasks from very low parallelism
– lisak
Nov 25 '15 at 10:51
...
Difference between left join and right join in SQL Server [duplicate]
...i
Null Null Kathmandu
Full Join
Note : It is same as union operation, it will return all selected values from both tables.
Syntax:
SELECT column_name(s) FROM table1 FULL OUTER JOIN table2 ON table1.column_name = table2.column_name;
Apply it in your samp[le table:
SELECT...
Can I specify a custom location to “search for views” in ASP.NET MVC?
...l",
"/AnotherPath/Views/Shared/{0}.cshtml"
}; // add `.Union(viewLocations)` to add default locations
}
}
where {0} is target view name, {1} - controller name and {2} - area name.
You can return your own list of locations, merge it with default viewLocations (.Union(viewLo...
How do I modify fields inside the new PostgreSQL JSON datatype?
...FROM json_each("json")
WHERE "key" <> "key_to_set"
UNION ALL
SELECT "key_to_set", to_json("value_to_set")) AS "fields"
$function$;
SQLFiddle
Edit:
A version, which sets multiple keys & values:
CREATE OR REPLACE FUNCTION "json_object_set_keys"(
"json" j...
C# 4 default parameter values: How to assign a default DateTime/object value? [duplicate]
...DateTime? dt = null)
{
if (dt == null)
{
dt = new DateTime(1981, 03, 01);
}
//...
}
You can call it with a named parameter like this:
test(dt: new DateTime(2010, 03, 01));
And with the default parameter like this:
test();
...
Why use the SQL Server 2008 geography data type?
...dbo.Geo
SELECT geography::Point(12.3456789012345, 12.3456789012345, 4326)
UNION ALL
SELECT geography::Point(87.6543210987654, 87.6543210987654, 4326)
GO 10000
INSERT dbo.LatLng
SELECT 12.3456789012345, 12.3456789012345
UNION
SELECT 87.6543210987654, 87.6543210987654
GO 10000
EXEC sp_spaceuse...
how to exclude null values in array_agg like in string_agg using postgres?
...array[null]:
select
array_agg(x)-array['']
from
( select 'Y' x union all
select null union all
select 'N' union all
select ''
) x;
That's all:
{Y, N}
share
|
...
How can I get the current user's username in Bash?
...ged in user's name and then exit. This command has been around since about 1981.
My-Mac:~ devin$ logname
devin
My-Mac:~ devin$ sudo logname
Password:
devin
My-Mac:~ devin$ sudo su -
My-Mac:~ root# logname
devin
My-Mac:~ root# echo $USER
root
...
Combining “LIKE” and “IN” for SQL Server [duplicate]
... table t INNER JOIN
(
SELECT 'Text%' Col
UNION SELECT 'Link%'
UNION SELECT 'Hello%'
UNION SELECT '%World%'
) List ON t.COLUMN LIKE List.Col
share
|
...
Detecting endianness programmatically in a C++ program
...punning - it will often be warned against by compiler. That's exactly what unions are for !
bool is_big_endian(void)
{
union {
uint32_t i;
char c[4];
} bint = {0x01020304};
return bint.c[0] == 1;
}
The principle is equivalent to the type case as suggested by others, ...