大约有 3,551 项符合查询结果(耗时:0.0326秒) [XML]

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Case conventions on element names?

...ate exactly, they are harder to read. And if you need to build xml with MS SQL hyphens are a pain in there as well. MS specific stuff shouldn't dictate a standard, but it is in wide enough use that I think it can be counted as a consideration. And it steers me toward underscore delimited lower-case ...
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HQL ERROR: Path expected for join

...the mapping metadata. This is why it is impossible to construct the native SQL query without having the path. share | improve this answer | follow | ...
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Printing Lists as Tabular Data

...9 | +-------+-----+ PrettyTable has options to read data from csv, html, sql database. Also you are able to select subset of data, sort table and change table styles. 3. texttable: https://pypi.python.org/pypi/texttable from texttable import Texttable t = Texttable() t.add_rows([['Name', 'Age'],...
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pandas GroupBy columns with NaN (missing) values

...he reason that I'm thinking of looking for other solutions like running an SQL server and querying the tables from there (looks a bit too complicated), or looking another library in spite of Pandas, or use my own (that I want to get rid of). Thx – Gyula Sámuel Karli ...
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How to concatenate strings with padding in sqlite

I have three columns in an sqlite table: 3 Answers 3 ...
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How big can a user agent string get?

...ed anymore as stated in MSDN : msdn.microsoft.com/en-us/library/ms187993(v=sql.90).aspx Instead, use NVARCHAR(MAX). Source: stackoverflow.com/questions/564755/… – Matt Roy Aug 14 '13 at 14:54 ...
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How to convert currentTimeMillis to a date in Java?

...java.time objects directly with your database. No need for strings or java.sql.* classes. Where to obtain the java.time classes? Java SE 8, Java SE 9, and later Built-in. Part of the standard Java API with a bundled implementation. Java 9 adds some minor features and fixes. Java SE 6 and Jav...
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How to access session variables from any class in ASP.NET?

...e using an out-of-process session storage. (either "State Server Mode" or "SQL Server Mode"). In oop modes the session data needs to be serialized at the end of the page request and deserialized at the beginning of the page request, which can be costly. To improve the performance the SessionState a...
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NoSQL - MongoDB vs CouchDB [closed]

I am a complete noob when it comes to the NoSQL movement. I have heard lots about MongoDB and CouchDB. I know there are differences between the two. Which do you recommend learning as a first step into the NoSQL world? ...
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When to use “ON UPDATE CASCADE”

...ys is a good & clean alternative to enums in my opinion (at least in MySQL DB flavors). For example, consider a table colors with rows blue, purple, yellow, and a table products with a product_color column, being FK'ed to the colors table. That restricts the choices like an enum, but unlike an a...