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扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
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扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
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System.Data.SQLite Close() not releasing database file
... was. I just ended up throwing an exception when you attempted to delete a SQLite DB using my library.
Anyway, this afternoon I was looking through it all again and figured I would try and find out why it was doing that once and for all, so here is what I've found so far.
What happens when you cal...
How do I use LINQ Contains(string[]) instead of Contains(string)
...perly. As written this would work for LINQ to objects (and may be LINQ to SQL). For EF, you'd do it the other way around and construct the collection in memory as List<int> instead and skip the ToString call.
– tvanfosson
Sep 28 '11 at 12:34
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What's the difference between VARCHAR and CHAR?
What's the difference between VARCHAR and CHAR in MySQL?
14 Answers
14
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There is already an open DataReader associated with this Command which must be closed first
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To make a global SQL connection wide change for one query is ridiculous. The correct answer should be the ToList one below. A local fix (i.e. just change the query) for a localised problem!
– bytedev
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How to drop all user tables?
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I get java.lang.IllegalArgumentException: No SQL selected for execution.. My idea is that cur_rec is not declared. How to declare it since this is some consisted out of bject_name, object_type?
– lijep dam
Jun 14 '17 at 14:55
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Visual Studio 2010 - recommended extensions [closed]
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I came here trying to find an SQL Template to add to VS2010, but it is not shown. Is there such a template?
– jp2code
Feb 25 '14 at 16:25
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What difference does .AsNoTracking() make?
...ult in more complex queries than simple OUTER
JOIN statements in Entity SQL.
You still can’t use LIKE with general pattern matching.
More info available here:
Performance considerations for Entity Framework
Entity Framework and NoTracking
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How to change collation of database, table, column?
...e != 'utf8_general_ci' AND table_schema not in ('information_schema','mysql', 'performance_schema','sys');
– William Entriken
Dec 12 '19 at 19:56
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