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Fastest check if row exists in PostgreSQL
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if bunch contains 100 rows it will return me 100 rows, you think thats good?
– Valentin Kuzub
Sep 19 '11 at 13:39
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GOBIN not set: cannot run go install
...s /home/ben/bin/ or even $HOME/bin/. My full command was (in fishshell, go v1.11) env GOBIN=$HOME/bin/ go install testfile.go.
– Benny Jobigan
Apr 25 '19 at 23:24
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Fastest Way to Serve a File Using PHP
...h nginx is, compared to reading and sending the file in php. Just think if 100 people are downloading a file: With php + apache, being generous, thats probably 100*15mb = 1.5GB (approx, shoot me), of ram right there. Nginx will just hand off sending the file to the kernel, and then it's loaded direc...
MySQL DROP all tables, ignoring foreign keys
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100
Here is SurlyDre's stored procedure modified so that foreign keys are ignored:
DROP PROCEDURE...
Cannot resolve the collation conflict between “SQL_Latin1_General_CP1_CI_AS” and “Latin1_General_CI_
...and:
ALTER TABLE YourTableName
ALTER COLUMN OffendingColumn
VARCHAR(100) COLLATE Latin1_General_CI_AS NOT NULL
Marc
UPDATE: to find the fulltext indices in your database, use this query here:
SELECT
fti.object_Id,
OBJECT_NAME(fti.object_id) 'Fulltext index',
fti.is_enabled,
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How to convert JSON string to array
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100
Try this:
$data = json_decode($your_json_string, TRUE);
the second parameter will make deco...
Getting one value from a tuple
...# you might want to do this
my_tuple_fun()[0]
my_tuple_fun()[1]
# or this
v1, v2 = my_tuple_fun()
Hope this clears things up further for those that need it.
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The term “Context” in programming? [closed]
...ow let's say you walk over to the bank.
At the bank, you ask to withdraw $100. The teller needs to establish your identity before giving you money, so you'll probably have to show them a driver's license or swipe your ATM card and enter your PIN number. Either way, what you're providing is context....
Apache Spark: map vs mapPartitions?
...ises the function at the partition level.
Example Scenario : if we have 100K elements in a particular RDD partition then we will fire off the function being used by the mapping transformation 100K times when we use map.
Conversely, if we use mapPartitions then we will only call the particular ...
How to retrieve an element from a set without removing it?
...tune in, time it:
from timeit import Timer
stats = [
"for i in range(1000): \n\tfor x in s: \n\t\tbreak",
"for i in range(1000): next(iter(s))",
"for i in range(1000): s.add(s.pop())",
"for i in range(1000): list(s)[0]",
"for i in range(1000): random.sample(s, 1)",
]
for stat ...