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SQL update trigger only when column is modified
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answered Aug 27 '12 at 12:10
mehdi lotfimehdi lotfi
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Eliminate extra separators below UITableView
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community wiki
20 revs, 6 users 77%J. Costa
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Access object child properties using a dot notation string [duplicate]
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Andy EAndy E
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What do pty and tty mean?
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edited Jul 12 '18 at 9:40
JohnGH
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answered Dec 13 '10 at 6:21
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Using Linq to get the last N elements of a collection?
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collection.Skip(Math.Max(0, collection.Count() - N));
This approach preserves item order without a dependency on any sorting, and has broad compatibility across several LINQ providers.
It is important to take care not to call Skip with a negative ...
What is the $? (dollar question mark) variable in shell scripting? [duplicate]
...), you will get the return value thrown by the ls command, which should be 0 (default "success" return value). If it doesn't exist, you should get a number other then 0. The exact number depends on the program.
For many programs you can find the numbers and their meaning in the corresponding man pa...
log4j logging hierarchy order
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306
This table might be helpful for you:
Going down the first column, you will see how the log w...
Comparing two NumPy arrays for equality, element-wise
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402
(A==B).all()
test if all values of array (A==B) are True.
Note: maybe you also want to test ...
Ruby's ||= (or equals) in JavaScript?
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answered Sep 30 '13 at 7:27
Dzung NguyenDzung Nguyen
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SQL UPDATE all values in a field with appended string CONCAT not working
... linda |
| 3 | sam |
| 4 | henry |
+------+-------+
4 rows in set (0.02 sec)
mysql> update t set data=concat(data, 'a');
Query OK, 4 rows affected (0.01 sec)
Rows matched: 4 Changed: 4 Warnings: 0
mysql> select * from t;
+------+--------+
| id | data |
+------+--------+
| 1 ...