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Modify table: How to change 'Allow Nulls' attribute from not null to allow null
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For MySQL, MariaDB
ALTER TABLE [table name] MODIFY COLUMN [column name] [data type] NULL
Use MODIFY COLUMN instead of ALTER COLUMN.
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Bash script error [: !=: unary operator expected
...ef | grep -v '\['`"
else
echo "`ps -ef | grep '\[' | grep root`"
fi;;
*) echo "usage: $0 [-v]"
exit 1;; #It is good practice to throw a code, hence allowing $? check
esac
If one cares not where the '-v' arg is, then simply drop the case inside a loop. The woul...
What's “tools:context” in Android layout files?
...name attribute. It prepends the package declaration from the manifest file root element, if necessary.
– Tor Norbye
Jun 20 '12 at 14:31
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TypeError: $.ajax(…) is not a function?
I'm trying to create a simple AJAX request which returns some data from a MySQL database. Here's my function below:
13 Answ...
Get the current script file name
...heir own impotence, But you can safe your url using different filers, like mysql_real_escape_string, stripslashes etc..
– Khandad Niazi
Jan 29 '14 at 15:43
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Allow user to set up an SSH tunnel, but nothing else
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?? @DanFarrell would the .ssh/authorized_keys be owned by root, or wheel, or whom?
– Andrew Wolfe
Nov 23 '15 at 14:35
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Finding duplicate rows in SQL Server
... I found this answer that worked just great: Get list of duplicate rows in MySql
SELECT n1.*
FROM myTable n1
INNER JOIN myTable n2
ON n2.repeatedCol = n1.repeatedCol
WHERE n1.id <> n2.id
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创业测试：50个迹象表明你真该创业了 - 资讯 - 清泛网 - 专注C/C++及内核技术
...。即使子女们不愿意接管家族企业，但他们也目睹了你是如何辛苦工作并且获得回报的。
31.你并不介意亲力亲为。身为一名新晋创业者，你不得不做大量枯燥乏味的工作。这并不是一个愉快的过程。但是如果你不介意亲力亲为...
Can a program depend on a library during compilation but not runtime?
...le configuration" (using Ivy terms) and major directory under your project root? For instance, all my JUnit tests that depend on the JUnit JAR will be under the test/ root, etc. I just don't see how the same classes, packaged under the same source root, could be "configured" to depend on different J...
How can I confirm a database is Oracle & what version it is using SQL?
...om v$version;
For SQL server use:
Select @@VERSION as Version
and for MySQL use:
Show variables LIKE "%version%";
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