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Difference between modes a, a+, w, w+, and r+ in built-in open function?
...hat I can now remember! The flow chart in this answer is beautiful and the table in the answer below is great, but if these answers (and others elsewhere) began with this simple point and worked from there, it would help provide a much better mental framework to hang the details on. So thanks. (I'm ...
How do I update an entity using spring-data-jpa?
...ries and possibly the query can be quite expensive since it may join other tables and load any collections that have fetchType=FetchType.EAGER
Spring-data-jpa supports update operation.
You have to define the method in Repository interface.and annotated it with @Query and @Modifying.
@Modifying
@Q...
jquery get all form elements: input, textarea & select
...on, sometimes this differs from children such as when the form tag is in a table and is not closed.
var summary = [];
$('form').each(function () {
summary.push('Form ' + this.id + ' has ' + $(this).find(':input').length + ' child(ren).');
summary.push('Form ' + this.id + ' has ' + th...
How to get the max of two values in MySQL?
...ll. E.g. select greatest(date1, ifnull(date2, "0000-00-00 00.00:00")) from table1 where date2 is null; will get you date1.
– Christoph Grimmer-Dietrich
Nov 5 '14 at 14:24
1
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Update a column value, replacing part of a string
I have a table with the following columns in a MySQL database
6 Answers
6
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Hibernate: hbm2ddl.auto=update in production?
...ddl hardly can predict (such as disabling triggers that were installed for table being modified). For complex schemas the safest way is manual. Automatic with post-regression testing is distant second. All IMHO.
– Vladimir Dyuzhev
Oct 21 '08 at 14:06
...
Workflow for statistical analysis and report writing
...functions defined in func.R to perform the analysis and produce charts and tables.
The main motivation for this set up is for working with large data whereby you don't want to have to reload the data each time you make a change to a subsequent step. Also, keeping my code compartmentalized like this...
How to hide “Showing 1 of N Entries” with the dataTables.js library
How do you remove the "Showing 1 of N entries" line of text on a dataTable (that is when using the javascript library dataTables? I think I was looking for something along these lines...
...
Get top n records for each group of grouped results
...fy the group number and add queries for each group:
(
select *
from mytable
where `group` = 1
order by age desc
LIMIT 2
)
UNION ALL
(
select *
from mytable
where `group` = 2
order by age desc
LIMIT 2
)
There are a variety of ways to do this, see this article to determine the...
What's the $unwind operator in MongoDB?
..., consider this array tags : [ "fun" , "good" , "fun" ] as another related table (can't be a lookup/reference table because values has some duplication) named "tags". Remember SELECT generally produces things vertical, so unwind the "tags" is to split() vertically into table "tags".
The end result ...