大约有 9,000 项符合查询结果(耗时:0.0328秒) [XML]

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How to execute IN() SQL queries with Spring's JDBCTemplate effectivly?

... You want a parameter source: Set<Integer> ids = ...; MapSqlParameterSource parameters = new MapSqlParameterSource(); parameters.addValue("ids", ids); List<Foo> foo = getJdbcTemplate().query("SELECT * FROM foo WHERE a IN (:ids)", parameters, getRowMapper()); This only...
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SQL Server 2008 Windows Auth Login Error: The login is from an untrusted domain

When attempting to connect to a SQL Server 2008 Instance using Management Studio, I get the following error: 35 Answers ...
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List all tables in postgresql information_schema

What is the best way to list all of the tables within PostgreSQL's information_schema? 8 Answers ...
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Sleep Command in T-SQL?

Is there to way write a T-SQL command to just make it sleep for a period of time? I am writing a web service asynchronously and I want to be able to run some tests to see if the asynchronous pattern is really going to make it more scalable. In order to "mock" an external service that is slow, I wa...
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What are the use cases for selecting CHAR over VARCHAR in SQL?

...the same length (within two characters length difference). Note: Microsoft SQL has 2 bytes of overhead for a VARCHAR. This may vary from DB to DB, but generally, there is at least 1 byte of overhead needed to indicate length or EOL on a VARCHAR. As was pointed out by Gaven in the comments: Things ch...
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Copying PostgreSQL database to another server

I'm looking to copy a production PostgreSQL database to a development server. What's the quickest, easiest way to go about doing this? ...
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How to check if a stored procedure exists before creating it

I have a SQL script that has to be run every time a client executes the "database management" functionality. The script includes creating stored procedures on the client database. Some of these clients might already have the stored procedure upon running the script, and some may not. I need to have...
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How to convert float to varchar in SQL Server

...number is CONVERT (VARCHAR(50), float_field,128) See http://www.connectsql.com/2011/04/normal-0-microsoftinternetexplorer4.html The other solutions above will sometimes round or add digits at the end UPDATE: As per comments below and what I can see in https://msdn.microsoft.com/en-us/library/m...
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How Do I Get the Query Builder to Output Its Raw SQL Query as a String?

... Use the toSql() method on a QueryBuilder instance. DB::table('users')->toSql() would return: select * from `users` This is easier than wiring up an event listener, and also lets you check what the query will actually look lik...
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What is an ORM, how does it work, and how should I use one? [closed]

...that encapsulates the code needed to manipulate the data, so you don't use SQL anymore; you interact directly with an object in the same language you're using. For example, here is a completely imaginary case with a pseudo language: You have a book class, you want to retrieve all the books of whic...