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How do I check if a Sql server string is null or empty
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I couldn't decide if I should upvote your answer or unclefofa's, since he seems to have answered first, but his answer has been edited after you answered. I ended upvoting both.
– Zecc
Mar 22 '11 at 1...
How do I clear this setInterval inside a function?
...igger(markers[timedCount], "click");
timedCount++;
}, 5000 );
};
var id = intervalTrigger();
Then to clear the interval:
window.clearInterval(id);
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Strange SQLAlchemy error message: TypeError: 'dict' object does not support indexing
...p:
c.execute("SELECT * FROM t WHERE a = %s")
In other words, if you provide parameter (%s) in query, but you forget to add query params. In this case error message is very misleading.
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App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎...
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创建一个测试数据表，sql如下：
CREATE TABLE users (
id INTEGER PRIMARY KEY,
name TEXT,
age INTEGER);
数据表信息
这时，可以查看一下表信息：
插入数据
往 users 表中插入一条测试数据...
Nullable Foreign Key bad practice?
Let's say you have a table Orders with a foreign key to a Customer Id. Now, suppose you want to add an Order without a Customer Id, (whether that should be possible is another question) you would have to make the foreign key NULL... Is that bad practice or would you rather work with a link table bet...
Dynamic validation and name in a form with AngularJS
I have this form : http://jsfiddle.net/dfJeN/
9 Answers
9
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Scroll Automatically to the Bottom of the Page
Consider I have a list of questions. When I click on the first question, it should automatically take me to the bottom of the page.
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Using Ajax.BeginForm with ASP.NET MVC 3 Razor
...xample of using Ajax.BeginForm within Asp.net MVC 3 where unobtrusive validation and Ajax exist?
8 Answers
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How can I get name of element with jQuery?
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You should use attr('name') like this
$('#yourid').attr('name')
you should use an id selector, if you use a class selector you encounter problems because a collection is returned
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How can I create an array with key value pairs?
...racket syntax:
if (!empty($row["title"])) {
$catList[$row["datasource_id"]] = $row["title"];
}
$row["datasource_id"] is the key for where the value of $row["title"] is stored in.
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