大约有 3,556 项符合查询结果（耗时：0.0294秒） [XML]
Check if SQL Connection is Open or Closed
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You should be using SqlConnection.State
e.g,
using System.Data;
if (myConnection != null && myConnection.State == ConnectionState.Closed)
{
// do something
// ...
}
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SQL, Postgres OIDs, What are they and why are they useful?
I am looking at some PostgreSQL table creation and I stumbled upon this:
4 Answers
4
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Entity Framework 4 vs NHibernate [closed]
...apping, better integration with stored procs / database functions / custom SQL / triggers, support for formula properties and so on. IMO it's basically just more mature as an ORM.
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sqlalchemy IS NOT NULL select
How can I add the filter as in SQL to select values that are NOT NULL from a certain column ?
3 Answers
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Using MySQL with Entity Framework [closed]
Can't find anything relevant about Entity Framework/MySQL on Google so I'm hoping someone knows about it.
10 Answers
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Oracle: If Table Exists
...s for an Oracle database, and was hoping Oracle had something similar to MySQL's IF EXISTS construct.
15 Answers
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How to insert a SQLite record with a datetime set to 'now' in Android application?
...me function using the Java wrapper "ContentValues". Either you can use :
SQLiteDatabase.execSQL so you can enter a raw SQL query.
mDb.execSQL("INSERT INTO "+DATABASE_TABLE+" VALUES (null, datetime()) ");
Or the java date time capabilities :
// set the format to sql date time
SimpleDateFormat ...
How do I send a file as an email attachment using Linux command line?
...'ve created a script that runs every night on my Linux server that uses mysqldump to back up each of my MySQL databases to .sql files and packages them together as a compressed .tar file. The next step I want to accomplish is to send that tar file through email to a remote email server for safeke...
SQL ON DELETE CASCADE, Which Way Does the Deletion Occur?
...new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f13444859%2fsql-on-delete-cascade-which-way-does-the-deletion-occur%23new-answer', 'question_page');
}
);
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Spring DAO vs Spring ORM vs Spring JDBC
...emplate class, that removes plumbing code and helps you concentrate on the SQL query and parameters. You just need to configure it with a DataSource, and you can then write code like this:
int nbRows = jdbcTemplate.queryForObject("select count(1) from person", Integer.class);
Person p = jdbcTempla...