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How do you create a Distinct query in HQL
...is a valid keywork for HQL, but I am looking for the HQL equivalent of the SQL keyword "distinct".
11 Answers
...
insert a NOT NULL column to an existing table
...swer above contains GO which is a must when you run this code on Microsoft SQL server. If you want to perform the same operation on Oracle or MySQL you need to use semicolon ; like that:
ALTER TABLE MY_TABLE ADD STAGE INT NULL;
UPDATE MY_TABLE SET <a valid not null values for your column>;
AL...
SQL Server 2008: How to query all databases sizes?
I have MS SQL 2008 R2, 500 databases.
What is the most efficient, easiest and 'modern' way to query all databases sizes.
14...
Python/postgres/psycopg2: getting ID of row just inserted
...URNING id")
id_of_new_row = cursor.fetchone()[0]
And please do not build SQL strings containing values manually. You can (and should!) pass values separately, making it unnecessary to escape and SQL injection impossible:
sql_string = "INSERT INTO domes_hundred (name,name_slug,status) VALUES (%s,%...
SQL Server: converting UniqueIdentifier to string in a case statement
....new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f6299918%2fsql-server-converting-uniqueidentifier-to-string-in-a-case-statement%23new-answer', 'question_page');
}
);
Post as a guest
...
Manually map column names with class properties
...
This works fine:
var sql = @"select top 1 person_id PersonId, first_name FirstName, last_name LastName from Person";
using (var conn = ConnectionFactory.GetConnection())
{
var person = conn.Query<Person>(sql).ToList();
return person...
DynamoDB vs MongoDB NoSQL [closed]
... to use a database for this, that's the reason why I decided to choose a noSQL data storage.
8 Answers
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Why can't I use an alias in a DELETE statement?
In SQL Server Compact Edition in Visual Studio 2010 (maybe SQL Server and SQL in general, I don't know), this command works:
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VC菜单命令详解(文件打开、保存与关闭) - C/C++ - 清泛网 - 专注C/C++及内核技术
...构造the main frame对象和the main frame window，但不显示它，它包括IDR_MAINFRAME、the toolbar、the status bar；
3、构造view对象和view窗口，但不显示它；
4、建立the document、main frame、view对象之间的关系，这里要借助AddDocTemplate建立的类关系...
Join/Where with LINQ and Lambda
...
I find that if you're familiar with SQL syntax, using the LINQ query syntax is much clearer, more natural, and makes it easier to spot errors:
var id = 1;
var query =
from post in database.Posts
join meta in database.Post_Metas on post.ID equals meta.Pos...