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Can I make the foreign key field optional in Django model
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197
Sure, just add blank=True, null=True for each field that you want to remain optional like
subj...
Query a parameter (postgresql.conf setting) like “max_connections”
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answered Nov 27 '11 at 20:42
Erwin BrandstetterErwin Brandstetter
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How to import existing *.sql files in PostgreSQL 8.4?
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BoloBolo
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django: BooleanField, how to set the default value to true?
...ited Jun 2 '19 at 20:56
user8193706
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answered Mar 4 '11 at 6:29
Michael C. ...
What is the theoretical maximum number of open TCP connections that a modern Linux box can have
...obably stop you first.
– Darron
Sep 7 '10 at 18:37
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The sysctl limit is for the whole system, ri...
Style child element when hover on parent
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answered Aug 27 '11 at 21:16
jtbandesjtbandes
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How to load a tsv file into a Pandas DataFrame?
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Note: As of 17.0 from_csv is discouraged: use pd.read_csv instead
The documentation lists a .from_csv function that appears to do what you want:
DataFrame.from_csv('c:/~/trainSetRel3.txt', sep='\t')
If you have a header, you can pass ...
How default .equals and .hashCode will work for my classes?
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Basil Bourque
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answered Nov 14 '10 at 18:44
Etienne de Marte...
INSERT INTO … SELECT FROM … ON DUPLICATE KEY UPDATE
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MySQL will assume the part before the equals references the columns named in the INSERT INTO cl...
Testing javascript with Mocha - how can I use console.log to debug a test?
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answered Nov 7 '13 at 20:13
Kevin C.Kevin C.
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