大约有 47,000 项符合查询结果(耗时:0.0391秒) [XML]

https://stackoverflow.com/ques... 

T-SQL: Opposite to string concatenation - how to split string into multiple records [duplicate]

...12)) RETURNS table AS RETURN ( WITH Pieces(pn, start, stop) AS ( SELECT 1, 1, CHARINDEX(@sep, @s) UNION ALL SELECT pn + 1, stop + 1, CHARINDEX(@sep, @s, stop + 1) FROM Pieces WHERE stop > 0 ) SELECT pn, SUBSTRING(@s, start, CASE WHEN stop > 0 THE...
https://stackoverflow.com/ques... 

Run PostgreSQL queries from the command line

... psql -U username -d mydatabase -c 'SELECT * FROM mytable' If you're new to postgresql and unfamiliar with using the command line tool psql then there is some confusing behaviour you should be aware of when you've entered an interactive session. For example, ...
https://stackoverflow.com/ques... 

Javascript Equivalent to C# LINQ Select

...always add custom methods to the array prototype as well: Array.prototype.select = function(expr){ var arr = this; //do custom stuff return arr.map(expr); //or $.map(expr); }; var ids = this.fruits.select(function(v){ return v.Id; }); An extended version that uses the function ...
https://stackoverflow.com/ques... 

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...
https://stackoverflow.com/ques... 

How can I use the $index inside a ng-repeat to enable a class and show a DIV?

... The issue here is that ng-repeat creates its own scope, so when you do selected=$index it creates a new a selected property in that scope rather than altering the existing one. To fix this you have two options: Change the selected property to a non-primitive (ie object or array, which makes jav...
https://stackoverflow.com/ques... 

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 ...
https://stackoverflow.com/ques... 

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...
https://stackoverflow.com/ques... 

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 ...
https://stackoverflow.com/ques... 

Setting JDK in Eclipse

...roperties the "JRE System Library" was still there. When I deleted it and selected "Use default Workspace JRE" only then did it pick up my change. I would have thought Eclipse should have updated my projects JRE when I selected a different JRE for my workspace – MayoMan ...
https://stackoverflow.com/ques... 

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 ...