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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 ...
...允许您修改数据库以使其兼容。
此设置会影响各种 Select 方法返回结果行的方式。
当此属性为 false 时，Select 方法返回的列表中的每个元素将是一个简单的值列表，这些值表示为每个匹配行选择的列的值。
当此属性为 true ...
PostgreSQL, checking date relative to “today”
...
select * from mytable where mydate > now() - interval '1 year';
If you only care about the date and not the time, substitute current_date for now()
...
Which annotation should I use: @IdClass or @EmbeddedId
...and @EmbeddedId is when it comes to write HQL :
With @IdClass you write:
select e.name from Employee e
and with @EmbeddedId you have to write:
select e.employeeId.name from Employee e
You have to write more text for the same query. Some may argue that this differs from a more natural language l...
adding and removing classes in angularJs using ng-click
...s code actuali change class for all div, how I can apply class only to the selected clicked item
– xzegga
Apr 24 '14 at 4:44
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jQuery: Best practice to populate drop down?
...emory (with a string variable) first and then append this string to parent select control should be more efficient, because this will cause only once page layout
– Wint
Jul 2 '15 at 14:41
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How to implement if-else statement in XSLT?
...oooooooooo
</h2>
XSLT 2.0 Solution
<h2>
<xsl:value-of select="if ($CreatedDate > $IDAppendedDate) then 'm' else 'd'"/>
ooooooooooooo
</h2>
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Explain ExtJS 4 event handling
...js4.1)
Lets say we have a controller Station (Sencha MVC examples) with a select box:
Ext.define('Pandora.controller.Station', {
extend: 'Ext.app.Controller',
...
init: function() {
this.control({
'stationslist': {
selectionchange: this.onStationSel...
Linq: GroupBy, Sum and Count
...a" is coming from, but the problem in the console app is that you're using SelectMany to look at each item in each group.
I think you just want:
List<ResultLine> result = Lines
.GroupBy(l => l.ProductCode)
.Select(cl => new ResultLine
{
ProductName =...
how to remove only one style property with jquery
I have a div with this property style="-moz-user-select:none; position:static !important;" .
I need to remove the -moz-user-select
Tried with $(selector).css() but I don't know what value to set because it's "none".
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Convert a string to int using sql query
...
You could use CAST or CONVERT:
SELECT CAST(MyVarcharCol AS INT) FROM Table
SELECT CONVERT(INT, MyVarcharCol) FROM Table
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