大约有 41,000 项符合查询结果(耗时:0.0454秒) [XML]

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Best way to create enum of strings?

... @Mark, true, it can't handle any character. If the OP just wants a single char, this solution is more straight forward than The Elite Gentleman suggestion. But indeed: if the range of characters exceeds the ones a valid Java identifier can have, this is a no...
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How to bind inverse boolean properties in WPF?

... which is easily missed when it (as is often the case) is embedded next to chars that look like it (i.e. one/more "("'s and "l"'s and "I"'s). – Tom Jan 18 '18 at 1:54 ...
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Get value when selected ng-option changes

...ple: <div ng-app="App" > <div ng-controller="ctrl"> <select ng-model="blisterPackTemplateSelected" ng-change="changedValue(blisterPackTemplateSelected)" data-ng-options="blisterPackTemplate as blisterPackTemplate.name for blisterPackTemplate in blisterPackTemplates...
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What is the simplest SQL Query to find the second largest value?

... SELECT MAX( col ) FROM table WHERE col < ( SELECT MAX( col ) FROM table ) share | improve this answ...
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How do I find duplicate values in a table in Oracle?

...then use a HAVING clause to find values that appear greater than one time. SELECT column_name, COUNT(column_name) FROM table_name GROUP BY column_name HAVING COUNT(column_name) > 1; share | impr...
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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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Select top 10 records for each category

... If you are using SQL 2005 you can do something like this... SELECT rs.Field1,rs.Field2 FROM ( SELECT Field1,Field2, Rank() over (Partition BY Section ORDER BY RankCriteria DESC ) AS Rank FROM table ) rs WHERE Rank <= 10 If y...
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MySQL ON vs USING?

...n tables ON a column, a set of columns and even a condition. For example: SELECT * FROM world.City JOIN world.Country ON (City.CountryCode = Country.Code) WHERE ... USING is useful when both tables share a column of the exact same name on which they join. In this case, one may say: SELECT ... FR...
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How to select only date from a DATETIME field in MySQL?

...e a table in the MySQL database that is set up with DATETIME . I need to SELECT in this table only by DATE and excluding the time. ...
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How to delete duplicates on a MySQL table?

...n an index is going to be slow for large tables. Wouldn't it be better to SELECT MAX(ID) FROM t GROUP BY unique and then JOIN to an exact match of ID to MAX(ID)? – ebyrob Nov 10 '16 at 16:31 ...