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SQLite add Primary Key
...ered Jun 3 '09 at 17:42
Nathan RidleyNathan Ridley
31.2k2828 gold badges113113 silver badges186186 bronze badges
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Should I make HTML Anchors with 'name' or 'id'?
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According to the HTML 5 specification, 5.9.8 Navigating to a fragment identifier:
For HTML documents (and the text/html MIME type), the following processing model must be followed to determine what the indicated part of the document is.
Parse the URL, and let fragid be the <fr...
How can I get last characters of a string
...avascript string method .substr() combined with the .length property.
var id = "ctl03_Tabs1";
var lastFive = id.substr(id.length - 5); // => "Tabs1"
var lastChar = id.substr(id.length - 1); // => "1"
This gets the characters starting at id.length - 5 and, since the second argument for .subs...
SQL RANK() versus ROW_NUMBER()
...bout the differences between these. Running the following SQL gets me two idential result sets. Can someone please explain the differences?
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MySQL ON DUPLICATE KEY - last insert id?
...e.html
At the bottom of the page they explain how you can make LAST_INSERT_ID meaningful for updates by passing an expression to that MySQL function.
From the MySQL documentation example:
If a table contains an AUTO_INCREMENT column and INSERT ... UPDATE inserts a row, the LAST_INSERT_ID() func...
Is C++ context-free or context-sensitive?
...ken when he said "Context sensitive is equivalent to Turing complete." (at least, he was if he was denoting "Recursively enumerable" by "Turing complete"), and has since been unable to recognize this mistake. Here is a reference for the proper set inclusion relationship involved here: en.wikipedia....
Validate uniqueness of multiple columns
Is there a rails-way way to validate that an actual record is unique and not just a column? For example, a friendship model / table should not be able to have multiple identical records like:
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How to make a smaller RatingBar?
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The default RatingBar widget is sorta' lame.
The source makes reference to style "?android:attr/ratingBarStyleIndicator" in addition to the "?android:attr/ratingBarStyleSmall" that you're already familiar with. ratingBarStyleIndicator is slightly...
Can I use CASE statement in a JOIN condition?
...T *
FROM sys.indexes i
JOIN sys.partitions p
ON i.index_id = p.index_id
JOIN sys.allocation_units a
ON CASE
WHEN a.type IN (1, 3) AND a.container_id = p.hobt_id THEN 1
WHEN a.type IN (2) AND a.container_id = p.partition_id THEN 1
EL...
Alternate output format for psql
...on Ubuntu. I have a table with columns c1 through cN . The columns are wide enough that selecting all columns causes a row of query results to wrap multiple times. Consequently, the output is hard to read.
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