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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
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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?
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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
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Is it possible to specify condition in Count()?
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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
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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 ...
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...
StringUtils 字符串工具扩展：强大的文本处理工具集 · App Inventor 2 中文网
...的文本处理工具函数。它提供了丰富的字符串操作方法，包括字符检测、文本提取、填充、验证等功能。
主要功能
字符和大小写检测
文本提取（左、右、中间）
文本填充和居中
字符串缩写
ASCII 码...
Can you do greater than comparison on a date in a Rails 3 search?
...('date ASC, created_at ASC')
or you can also convert everything into the SQL notation
Note.
where("user_id = ? AND notetype = ? AND date > ?", current_user.id, p[:note_type], p[:date]).
order('date ASC, created_at ASC')
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What are the use cases of Graph-based Databases (http://neo4j.org/)? [closed]
...traversals in a graph database, but that would be quite complex queries in SQL.
The main advantages of the graph model were rapid development time and flexibility. We could quickly add new functionality without impacting existing deployments. If a potential customer wanted to import some of their o...