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Primary key or Unique index?
...1 (foo, bar) VALUES (3, 1); -- OK
INSERT INTO table1 (foo, bar) VALUES (1, 4); -- Fails!
Duplicate entry '1' for key 'ux_table1_foo'
The last insert fails because it violates the unique index on column foo when it tries to insert the value 1 into this column for a second time.
In MySQL a unique ...
Better way to check variable for null or empty string?
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edited Jun 14 '18 at 4:58
Akira Yamamoto
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SQL to LINQ Tool [closed]
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edited Jul 17 at 17:48
answered Nov 17 '08 at 22:02
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What is the best way to measure execution time of a function? [duplicate]
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Options for initializing a string array [duplicate]
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How to mark a method as obsolete or deprecated?
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What is the pythonic way to unpack tuples? [duplicate]
...le, which seems like what you're trying to do here:
t = (2010, 10, 2, 11, 4, 0, 2, 41, 0)
dt = datetime.datetime(*t[0:7])
This is called unpacking a tuple, and can be used for other iterables (such as lists) too. Here's another example (from the Python tutorial):
>>> range(3, 6) ...
How do I create JavaScript array (JSON format) dynamically?
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