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Can I have multiple primary keys in a single table?
...made from two or more columns. For example:
CREATE TABLE userdata (
userid INT,
userdataid INT,
info char(200),
primary key (userid, userdataid)
);
Update: Here is a link with a more detailed description of composite primary keys.
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URL rewriting with PHP
...RewriteEngine on
RewriteRule ^/?Some-text-goes-here/([0-9]+)$ /picture.php?id=$1
This will tell Apache to enable mod_rewrite for this folder, and if it gets asked a URL matching the regular expression it rewrites it internally to what you want, without the end user seeing it. Easy, but inflexible,...
How to insert values into C# Dictionary on instantiation?
...gt;()
{
{ 111, new StudentName {FirstName="Sachin", LastName="Karnik", ID=211}},
{ 112, new StudentName {FirstName="Dina", LastName="Salimzianova", ID=317}},
{ 113, new StudentName {FirstName="Andy", LastName="Ruth", ID=198}}
};
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Sorting an array of objects by property values
....localeCompare(string2) for string comparison
– bradvido
May 27 '14 at 13:51
67
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In which order do CSS stylesheets override?
...REC-CSS2-20110607/cascade.html#cascade
In short: more specific rules override more general ones. Specificity is defined based on how many IDs, classes, and element names are involved, as well as whether the !important declaration was used. When multiple rules of the same "specificity level" exist, ...
How to debug Google Apps Script (aka where does Logger.log log to?)
...y show you anything that was logged from the last function you ran from inside Script Editor.
The script I was trying to get working had to do with spreadsheets - I made a spreadsheet todo-checklist type thing that sorted items by priorities and such.
The only triggers I installed for that script ...
MySQL how to join tables on two fields
I have two tables with date and id fields. I want to join on both fields. I tried
3 Answers
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SQL Server: SELECT only the rows with MAX(DATE)
...teEntered) FROM yourTable WHERE orderNo = [data].orderNo)
Or...
WHERE
ID = (SELECT TOP 1 ID FROM yourTable WHERE orderNo = [data].orderNo ORDER BY DateEntered DESC)
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Change Placeholder Text using jQuery
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You can use following code to update a placeholder by id:
$("#serMemtb").attr("placeholder", "Type a Location").val("").focus().blur();
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What is meaning of boolean value returned from an event-handling method in Android
In android, most event listener methods return a boolean value. What is that true/false value mean ? what will it result in to the subsequence events ?
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