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ORA-00979 not a group by expression
...ults to a single value (like MIN, MAX or SUM).
A simple example to understand why this happens: Imagine you have a database like this:
FOO BAR
0 A
0 B
and you run SELECT * FROM table GROUP BY foo. This means the database must return a single row as result with the first column 0 to fulfill t...
What platforms have something other than 8-bit char?
Every now and then, someone on SO points out that char (aka 'byte') isn't necessarily 8 bits .
12 Answers
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Should image size be defined in the img tag height/width attributes or in CSS? [duplicate]
...better coding practice to define an images size in the img tag's width and height attributes?
7 Answers
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jQuery.inArray(), how to use it right?
First time I work with jQuery.inArray() and it acts kinda strange.
20 Answers
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MySQL root password change
...I have run the mysqld_safe --skip-grant-tables, updated the root password, and checked the user table to make sure it is there. Once restarting the mysql daemon I tried logging in with the new root password that I just set and still get Access denied for user 'root' errors. I have also tried compl...
how to emulate “insert ignore” and “on duplicate key update” (sql merge) with postgresql?
...m a subquery, you're best of splitting it into two queries, one for INSERT and one for UPDATE (as an appropriate join/subselect of course - no need to write your main filter twice)
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Remove large .pack file created by git
I checked a load of files in to a branch and merged and then had to remove them and now I'm left with a large .pack file that I don't know how to get rid of.
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Update just one gem with bundler
I use bundler to manage dependencies in my rails app, and I have a gem hosted in a git repository included as followed:
8 A...
Mysql order by specific ID values
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You can use ORDER BY and FIELD function.
See http://lists.mysql.com/mysql/209784
SELECT * FROM table ORDER BY FIELD(ID,1,5,4,3)
It uses Field() function, Which "Returns the index (position) of str in the str1, str2, str3, ... list. Returns 0 i...
How to count the number of occurrences of an element in a List
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I'm pretty sure the static frequency-method in Collections would come in handy here:
int occurrences = Collections.frequency(animals, "bat");
That's how I'd do it anyway. I'm pretty sure this is jdk 1.6 straight up.
shar...