大约有 47,000 项符合查询结果(耗时:0.0386秒) [XML]

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SqlException from Entity Framework - New transaction is not allowed because there are other threads

... IList<Client> clientList = from a in _dbFeed.Client.Include("Auto") select a; foreach (RivWorks.Model.NegotiationAutos.Client client in clientList) { var companyFeedDetailList = from a in _dbRiv.AutoNegotiationDetails where a.ClientID == client.ClientID select a; // ... } ...
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SQL Server: Get table primary key using sql query [duplicate]

... I also found another one for SQL Server: SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE WHERE OBJECTPROPERTY(OBJECT_ID(CONSTRAINT_SCHEMA + '.' + QUOTENAME(CONSTRAINT_NAME)), 'IsPrimaryKey') = 1 AND TABLE_NAME = 'TableName' AND TABLE_SCHEMA = 'Schema' ...
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Spring JPA selecting specific columns

...Spring JPA to perform all database operations. However I don't know how to select specific columns from a table in Spring JPA? ...
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How can I see the SQL that will be generated by a given ActiveRecord query in Ruby on Rails

... write a plugin that would do something like: SampleModel.find(:all, :select => "DISTINCT(*)", :conditions => ["date > #{self.date}"], :limit => 1, :order => 'date', :group => "date").show_generated_sql and have this call the construct_finder_sql method. ...
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What is the difference between bindParam and bindValue?

...iated parameter markers Example: $value = 'foo'; $s = $dbh->prepare('SELECT name FROM bar WHERE baz = :baz'); $s->bindParam(':baz', $value); // use bindParam to bind the variable $value = 'foobarbaz'; $s->execute(); // executed with WHERE baz = 'foobarbaz' or $value = 'foo'; $s = $dbh...
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Exporting data In SQL Server as INSERT INTO

...something else, see screenshot below this one 2008 R2 or later eg 2012 Select "Types of Data to Script" which can be "Data Only", "Schema and Data" or "Schema Only" - the default). And then there's a "SSMS Addin" Package on Codeplex (including source) which promises pretty much the same func...
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shortcut in Android Studio to locate the current editing src file

...l from Source (right click the empty area to the left of said button) now selects the opened file in the tree. Also, after enabling it, the button is removed. – FirstOne Nov 28 '17 at 12:28 ...
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LINQ: Distinct values

...d it should be okay: var query = doc.Elements("whatever") .Select(element => new { id = (int) element.Attribute("id"), category = (int) element.Attribute("cat") }) .Distinct(); If you're trying to get a dis...
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SQLAlchemy ORDER BY DESCENDING?

... from sqlalchemy import desc someselect.order_by(desc(table1.mycol)) Usage from @jpmc26 share | improve this answer | follow ...
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How do I delete a Discipline in EPF Composer 1.5?

... I understand what you are looking for can be done through Configurations (select OpenUP in your Library view) and published View definitions. See slide 83 and 84 of this PPT document. You should be able to take it from there. An Introduction to the Eclipse Process Framework. In case the link doe...