大约有 47,000 项符合查询结果(耗时:0.0397秒) [XML]

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Get the generated SQL statement from a SqlCommand object?

... } sql.AppendLine(";"); sql.AppendLine("select 'Return Value' = convert(varchar, @return_value);"); foreach (SqlParameter sp in sc.Parameters) { if ((sp.Direction == ParameterDirection.InputOutput) || (sp.Directi...
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MySQL, better to insert NULL or empty string?

...or an empty string using a bound variable but not for a NULL. This query: SELECT * FROM mytable WHERE mytext = ? will never match a NULL in mytext, whatever value you pass from the client. To match NULLs, you'll have to use other query: SELECT * FROM mytable WHERE mytext IS NULL ...
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Unix command-line JSON parser? [closed]

... you to do powerful things really easily: cat earthporn.json | underscore select '.data .title' # [ 'Fjaðrárgljúfur canyon, Iceland [OC] [683x1024]', # 'New town, Edinburgh, Scotland [4320 x 3240]', # 'Sunrise in Bryce Canyon, UT [1120x700] [OC]', # ... # 'Kariega Game Reserve, South Afric...
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In VIM, how do I break one really long line into multiple lines?

... format the line that {motion} moves over {Visual}gq % format the visually selected area gqq % format the current line ... I'd suggest you check out :help gq and :help gw. Also setting textwidth (tw) will give you auto line break when exceeded during typing. It is used in gq too, though if...
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Programmatically trigger “select file” dialog box

I have a hidden file input element. Is it possible to trigger its select file dialog box from a button's click event? 13 ...
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SQL WHERE condition is not equal to?

... clause may be negated according to the above rules. The negation of this select * from foo where test-1 and test-2 and ( test-3 OR test-4 ) is select * from foo where NOT( test-1 and test-2 and ( test-3 OR te...
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How to deploy a war file in Tomcat 7

...n the Deploy section, WAR file to deploy subsection, click on Browse.... Select the .war file (E.g.: prj.war) > click on Deploy. In the Applications section, you can see the name of your project (E.g.: prj). share ...
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Where can I find the IIS logs?

... %SystemDrive%\inetpub\logs\LogFiles Otherwise, check under IIS Manager, select the computer on the left pane, and in the middle pane, go under "Logging" in the IIS area. There you will se the default location for all sites (this is however overridable on all sites) You could also look into %Sy...
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The model used to open the store is incompatible with the one used to create the store

... searching for a quick fix: Open your .xcdatamodeld file click on Editor select Add model version... Add a new version of your model (the new group of datamodels added) select the main file, open file inspector (right-hand panel) and under Versioned core data model select your new version of data ...
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Is there a MySQL option/feature to track history of changes to records?

...i AFTER INSERT ON MyDB.data FOR EACH ROW INSERT INTO MyDB.data_history SELECT 'insert', NULL, NOW(), d.* FROM MyDB.data AS d WHERE d.primary_key_column = NEW.primary_key_column; CREATE TRIGGER MyDB.data__au AFTER UPDATE ON MyDB.data FOR EACH ROW INSERT INTO MyDB.data_history SELECT 'up...