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MySQL order by before group by
...use.
(If you're sure that ID is only increasing, and if ID1 > ID2 also means that post_date1 > post_date2, then the query could be made much more simple, but I'm not sure if this is the case).
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What are the benefits of dependency injection containers?
...ressed interfaces on the other.
External (Xml) configuration of DI objects means that others can customize your code in unforeseen directions.
External configuration is also a separation of concern pattern in that all problems of object initialization and object interdependency management can be han...
Django REST Framework: adding additional field to ModelSerializer
...f properties in Django models, and cannot find good explanation of what it means. Can you explain? What is the point of the @property decorator here?
– Neil
Aug 23 '13 at 7:09
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How does the “this” keyword work?
...dentifiers are resolved in the lexical scope like any
other variable. That means that inside an arrow function, this...refer(s) to the values of this in the environment
the arrow function is defined in.
Just for fun, test your understanding with some examples
To reveal the answers, mouse over the l...
INSERT statement conflicted with the FOREIGN KEY constraint - SQL Server
...'ll need to post your statement for more clarification. But...
That error means that the table you are inserting data into has a foreign key relationship with another table. Before data can be inserted, the value in the foreign key field must exist in the other table first.
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How to disable/enable select field using jQuery?
...led is a Boolean Attribute of the select element as stated by WHATWG, that means the RIGHT WAY TO DISABLE with jQuery would be
jQuery("#selectId").attr('disabled',true);
This would make this HTML
<select id="selectId" name="gender" disabled="disabled">
<option value="-1">--Select...
Add & delete view from Layout
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What will be the diff in terms of performance? I mean the performance diff of adding them dynamically or putting them into a static xml layout file and let it be inflated ?
– stdout
Jun 15 '16 at 13:24
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SQL Server 2008: How to query all databases sizes?
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I don't know exactly what you mean by efficiency but this is straightforward and it works for me:
SELECT
DB_NAME(db.database_id) DatabaseName,
(CAST(mfrows.RowSize AS FLOAT)*8)/1024 RowSizeMB,
(CAST(mflog.LogSize AS FLOAT)*8)/1024 LogSizeMB...
Check if checkbox is checked with jQuery
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IDs must be unique in your document, meaning that you shouldn't do this:
<input type="checkbox" name="chk[]" id="chk[]" value="Apples" />
<input type="checkbox" name="chk[]" id="chk[]" value="Bananas" />
Instead, drop the ID, and then select them ...
client secret in OAuth 2.0
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Also I don't understand what you mean by "If a user proxies your HTTPs call" yes users get access to data they sent using HTTPs and they are free to proxy calls however they like. As I understood you are suggesting this as quite a nice alternative to disass...