大约有 47,000 项符合查询结果(耗时:0.0767秒) [XML]

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Find the number of columns in a table

... SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS WHERE table_catalog = 'database_name' -- the database AND table_name = 'table_name' share ...
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Getting only Month and Year from SQL DATE

...o 'discard' the Days, Hours, etc - Leaving a year/month only date field SELECT DATEADD(MONTH, DATEDIFF(MONTH, 0, <dateField>), 0) AS [year_month_date_field] FROM <your_table> This gets the number of whole months from a base date (0) and then adds them to that base date. Thus ...
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Get cursor position (in characters) within a text Input field

... Easier update: Use field.selectionStart example in this answer. Thanks to @commonSenseCode for pointing this out. Old answer: Found this solution. Not jquery based but there is no problem to integrate it to jquery: /* ** Returns the caret (curs...
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How can I select an element with multiple classes in jQuery?

I want to select all the elements that have the two classes a and b . 13 Answers 13...
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Resetting a multi-stage form with jQuery

...n, :submit, :reset, :hidden') .val('') .removeAttr('checked') .removeAttr('selected'); Which might work for a lot of cases, including for the OP, but as pointed out in the comments and in other answers, will clear radio/checkbox elements from any value attributes. A more correct answer (but not per...
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How to submit form on change of dropdown list?

I am creating a page in JSP where I have a dropdown list and once the user selects a value he has to click on the go button and then the value is sent to the Servlet. ...
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Counting DISTINCT over multiple columns

... function turns the ints into varchars to make the distinct more reliable SELECT COUNT(DISTINCT (CHECKSUM(DocumentId,DocumentSessionId)) + CHECKSUM(REVERSE(DocumentId),REVERSE(DocumentSessionId)) ) FROM DocumentOutPutItems ...
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How to comment and uncomment blocks of code in the Office VBA Editor

...tor, go to View, Toolbars, Customise... or right click on the tool bar and select Customise... Under the Commands tab, select the Edit menu on the left. Then approximately two thirds of the way down there's two icons, Comment Block and Uncomment Block. Drag and drop these onto your toolbar and th...
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MySQL - Using COUNT(*) in the WHERE clause

... try this; select gid from `gd` group by gid having count(*) > 10 order by lastupdated desc share | improve this answer ...
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Group query results by month and year in postgresql

... select to_char(date,'Mon') as mon, extract(year from date) as yyyy, sum("Sales") as "Sales" from yourtable group by 1,2 At the request of Radu, I will explain that query: to_char(date,'Mon') as mon, : convert...