大约有 37,000 项符合查询结果（耗时：0.0312秒） [XML]
How do I delete multiple rows in Entity Framework (without foreach)
I'm deleting several items from a table using Entity Framework. There isn't a foreign key / parent object so I can't handle this with OnDeleteCascade.
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What is the difference between Spring, Struts, Hibernate, JavaServer Faces, Tapestry?
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In hibernate you need not bother about how to create table in SQL and you need not to remember connection ,prepared statement like that data is persisted in a database. So, basically it makes a developer's life easy.
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Adding :default => true to boolean in existing Rails column
...ribute == nil ? true : false)) }
Update the migration that created this table, so any future builds of the DB will get it right from the onset. Also run the same process on any deployed-instances of the DB.
If using the "new db migration" method, you can do the update of existing nil-values i...
What is the format specifier for unsigned short int?
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Here is a good table for printf specifiers. So it should be %hu for unsigned short int.
And link to Wikipedia "C data types" too.
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How do I convert a pandas Series or index to a Numpy array? [duplicate]
...ke this:
dd = list(zone[0]) #Where zone[0] is some specific column of the table
idx = dd.index(filename[i])
You have you index value as idx.
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Error installing mysql2: Failed to build gem native extension
...\models\city.rb to look like this
class City < ActiveRecord::Base
set_table_name "city"
end
Edit the file c:\Sites\world\config\database.yml to look like this
development:
adapter: mysql2
encoding: utf8
database: world
pool: 5
username: root
password: root
socket: /tmp/mysql.sock
add to ge...
How to declare a variable in MySQL?
...ting a column value from calculations
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SELECT count(*) INTO @NR FROM a_table WHERE a_condition;
SET NEW.ord_col = IFNULL( @NR, 0 ) + 1;
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Case insensitive Query with Spring CrudRepository
...ing code works for me
return entityManager.createQuery("select q from "table " q where upper(q.applicant)=:applicant")
.setParameter("applicant",applicant.toUpperCase().trim()).getSingleResult();
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SQL Server Installation - What is the Installation Media Folder?
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If you are using an executable,
just run the executable (for example: "en_sql_server_2012_express_edition_with_advanced_services_x64.exe")
Navigate to the "options" tab
Copy the "Installation Media Root Directory" (should look something like the b...
Centering the pagination in bootstrap
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You can add your custom Css:
.pagination{
display:table;
margin:0 auto;
}
Thank you