大约有 3,551 项符合查询结果(耗时:0.0411秒) [XML]

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NoSQL Use Case Scenarios or WHEN to use NoSQL [closed]

... It really is an "it depends" kinda question. Some general points: NoSQL is typically good for unstructured/"schemaless" data - usually, you don't need to explicitly define your schema up front and can just include new fields without any ceremony NoSQL typically favours a denormalised schema d...
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Increment value in mysql update query

... You could also just do this: mysql_query(" UPDATE member_profile SET points = points + 1 WHERE user_id = '".$userid."' "); share | improve t...
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How to set a default entity property value with Hibernate

...not portable from a database to another, and you need to know the specific SQL language of your server. – pdem Sep 20 '16 at 7:30 ...
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Difference between “read commited” and “repeatable read”

...le read simply reads a "snapshot" not the actual data. From the docs dev.mysql.com/doc/refman/5.0/en/…: "All consistent reads within the same transaction read the snapshot established by the first read." – Derek Litz Jan 17 '13 at 16:40 ...
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How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?

...RT a row when it does not exist, or to UPDATE if it exists, using one MySQL query? 2 Answers ...
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Spring JPA @Query with LIKE

... SQL-Injection using your solution possible? (asking because of CONCAT) – ramden Nov 8 '18 at 11:22 ...
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Is there a Subversion command to reset the working copy?

... Delete unversioned files and revert any changes: svn revert D:\tmp\sql -R svn cleanup D:\tmp\sql --remove-unversioned Out: D D:\tmp\sql\update\abc.txt share | improve this answer...
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Is it possible to specify condition in Count()?

... SQL Server implies an else null for case statements, so the count() example can be 10 characters shorter (if you count the space). – Michael Feb 16 '18 at 22:05 ...
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DataSet panel (Report Data) in SSRS designer is gone

... If you are using BIDS with SQL 2008 R2 you can only get the "Report Data" menu by clicking inside the actual report layout itself. Click inside the actual report layout. Now select "View" from the main menu bar. Now select "Report Data" which is the ...
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Is BCrypt a good hashing algorithm to use in C#? Where can I find it? [closed]

...urity practices. If they can successfully use another attack vector (XSS, SQL Injection, CSRF, et. al.) on your site, good password security doesn't matter. That sounds like a controversial statement, but think about it: If I can get all your user information through a SQL injection attack, or I c...