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How to declare a variable in a PostgreSQL query
...master_login = (SELECT login
FROM master_user)
AND (SELECT registration_date
FROM master_user) > ...;
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How do I delete a fixed number of rows with sorting in PostgreSQL?
...'t change ctids, I don't think. Since that just compacts within each page, and the ctid is just the line number not a page offset. A VACUUM FULL or a CLUSTER operation would change the ctid, but those operations take an access exclusive lock on the table first.
– araqnid
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How to add custom method to Spring Data JPA
... Spring Data JPA. Consider the below example where I will get all the crud and finder functionality working by default and if I want to customize a finder then that can be also done easily in the interface itself.
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Spring Data: “delete by” is supported?
...ing JPA for database access. I am able to find examples such as findByName and countByName, for which I dont have to write any method implementation. I am hoping to find examples for delete a group of records based on some condition.
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How should equals and hashcode be implemented when using JPA and Hibernate
How should model class's equals and hashcode be implemented in Hibernate? What are the common pitfalls? Is the default implementation good enough for most cases? Is there any sense to use business keys?
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REST API Best practice: How to accept list of parameter values as input [closed]
We are launching a new REST API and I wanted some community input on best practices around how we should have input parameters formatted:
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Read Excel File in Python
...
A somewhat late answer, but with pandas it is possible to get directly a column of an excel file:
import pandas
import xlrd
df = pandas.read_excel('sample.xls')
#print the column names
print df.columns
#get the values for a given column
values = df['Arm_id']...
On Duplicate Key Update same as insert
.... My question is quiet simple: Do I really need to specify all the fields (and values in my first example) if they are the same as in the insert? I just want to insert all or if there is a unique value match: update all.
– Roy
Jan 17 '13 at 16:36
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Using the HTML5 “required” attribute for a group of checkboxes?
...hen using the newer browsers that support HTML5 (FireFox 4 for example);
and a form field has the attribute required='required' ;
and the form field is empty/blank;
and the submit button is clicked;
the browsers detects that the "required" field is empty and does not submit the form; inst...
How to change value of object which is inside an array using JavaScript or jQuery?
...desc = desc;
break; //Stop this loop, we found it!
}
}
}
and use it like
var projects = [ ... ];
changeDesc ( 'jquery-ui', 'new description' );
UPDATE:
To get it faster:
var projects = {
jqueryUi : {
value: 'lol1',
desc: 'lol2'
}
};
projects.jqueryUi.desc...