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MySQL: Insert record if not exists in table
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+----+--------+-----------+------+
And so on...
Update:
To prevent #1060 - Duplicate column name error in case two values may equal, you must name the columns of the inner SELECT:
INSERT INTO table_listnames (name, address, tele)
SELECT * FROM (SELECT 'Unknown' AS name, 'Unknown' AS address,...
Why switch is faster than if
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answered Jul 15 '11 at 10:56
DanielDaniel
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How do you calculate log base 2 in Java for integers?
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Using a bitmask in C#
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edited Jul 16 '10 at 3:35
answered Jul 16 '10 at 2:17
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Test whether a glob has any matches in bash
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answered Dec 10 '15 at 6:36
Brian ChrismanBrian Chrisman
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How do I create directory if it doesn't exist to create a file?
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answered Jun 2 '10 at 6:19
DonDon
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How to detect if a specific file exists in Vimscript?
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answered Jun 23 '10 at 3:09
stefanBstefanB
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Hidden features of Python [closed]
...ining comparison operators:
>>> x = 5
>>> 1 < x < 10
True
>>> 10 < x < 20
False
>>> x < 10 < x*10 < 100
True
>>> 10 > x <= 9
True
>>> 5 == x > 4
True
In case you're thinking it's doing 1 < x, which comes out a...
How to cast an Object to an int
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answered Sep 7 '10 at 18:19
Colin HebertColin Hebert
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One line if-condition-assignment
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vidstige
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answered Oct 24 '11 at 8:27
FrostFrost
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