大约有 3,551 项符合查询结果(耗时:0.0237秒) [XML]

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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

... 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?

... 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]

... 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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Install Windows Service created in Visual Studio

... answered Jan 22 '17 at 18:02 Sql SurferSql Surfer 1,06277 silver badges2323 bronze badges ...
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Original purpose of ? [closed]

... For example <?php if(isset($_POST['delete_action'])) { mysqli_query($connection, "DELETE FROM table_name WHERE record_id = ".$_POST['row_to_be_deleted']); //Here is where hidden field value is used } wh...
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How to find out line-endings in a text file?

...gs in a file printed rather than interpreted. The file is a dump from SSIS/SQL Server being read in by a Linux machine for processing. ...
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Distinct not working with LINQ to Objects

...t with implementing methods, and if using EF will delegate the work to the sql server. – Zapnologica Aug 31 '15 at 11:25 ...