大约有 3,551 项符合查询结果(耗时:0.0255秒) [XML]

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When to use MongoDB or other document oriented database systems? [closed]

...m for video- and audio-clips, photos and vector-grafics. We started with MySQL as the database backend and recently included MongoDB for storing all meta-information of the files, because MongoDB better fits the requirements. For example: photos may have Exif information, videos may have audio-t...
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Deleting Row in SQLite in Android

This might be a dumb question, but I'm new to SQLite and I can't seem to figure this out. I have 1 table that has columns KEY_ROWID , KEY_NAME , KAY_LATITUDE , and KEY_LONGITUDE . I want the user to be able to select one and delete it; Can anyone give me a direction to start in? My question i...
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Hibernate throws MultipleBagFetchException - cannot simultaneously fetch multiple bags

...getResultList(); In the first JPQL query, distinct DOES NOT go to the SQL statement. That's why we set the PASS_DISTINCT_THROUGH JPA query hint to false. DISTINCT has two meanings in JPQL, and here, we need it to deduplicate the Java object references returned by getResultList on the Java...
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Restrict varchar() column to specific values?

...a way to specify, for example 4 distinct values for a varchar column in MS SQL Server 2008? 4 Answers ...
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How to create a database from shell command?

I'm looking for something like createdb in PostgreSQL or any other solution that would allow me to create database with a help of a shell command. Any hints? ...
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Converting between java.time.LocalDateTime and java.util.Date

...17 23:53:28 using this approach. Take a look at the implementation of java.sql.Timestamp#toLocalDateTime() if you needed the result to be 1111-11-11 00:00:00 in the previous example. – dog Dec 5 '16 at 12:09 ...
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How to detect READ_COMMITTED_SNAPSHOT is enabled?

In MS SQL Server is there a way to detect whether a database has had its isolation level set via the T-SQL command ALTER DATABASE <database> SET READ_COMMITTED_SNAPSHOT ON; ...
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Difference between a user and a schema in Oracle?

... @djangofan Afaik this question is about Oracle, and not about MS SQL. – peterh - Reinstate Monica Feb 19 '16 at 13:36 add a comment  |  ...
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What is the difference between “Class.forName()” and “Class.forName().newInstance()”?

... this: package acme.db; public class Driver { static { java.sql.DriverManager.registerDriver(new Driver()); } ... } Calling Class.forName("acme.db.Driver") causes the initialization of the acme.db.Driver class and thus the execution of the static initialization block. And ...
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What is the difference between Integrated Security = True and Integrated Security = SSPI?

...I" used Kerberos, but they're now interchangeable. – SqlRyan Aug 4 '09 at 20:26 5 Didn't check la...