大约有 9,777 项符合查询结果(耗时:0.0151秒) [XML]

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how to implement regions/code collapse in javascript

....Collections Public Module JsMacros Sub OutlineRegions() Dim selection As EnvDTE.TextSelection = DTE.ActiveDocument.Selection Const REGION_START As String = "//#region" Const REGION_END As String = "//#endregion" selection.SelectAll() Dim text As Strin...
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MySQL Query GROUP BY day / month / year

... for added clarity in some cases such as where records span several years. SELECT COUNT(event_id), DATE_FORMAT(event_start, '%Y/%m') – Ric Apr 4 '13 at 10:25 ...
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SQL selecting rows by most recent date

...eturns a result set with ChargeId, ChargeType, and MostRecentServiceMonth SELECT CHARGEID, CHARGETYPE, MAX(SERVICEMONTH) AS "MostRecentServiceMonth" FROM INVOICE GROUP BY CHARGEID, CHARGETYPE share | ...
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How to make a query with group_concat in sql server [duplicate]

... Query: SELECT m.maskid , m.maskname , m.schoolid , s.schoolname , maskdetail = STUFF(( SELECT ',' + md.maskdetail FROM dbo.maskdetails md WHERE m.maskid = md.maskid FOR X...
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How to select first and last TD in a row?

How can you select the first and the last TD in a row? 5 Answers 5 ...
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Making a WinForms TextBox behave like your browser's address bar

...etty straightforward and seems to work in all the scenarios (mousing down, selecting text, tabbing focus, etc.) bool alreadyFocused; ... textBox1.GotFocus += textBox1_GotFocus; textBox1.MouseUp += textBox1_MouseUp; textBox1.Leave += textBox1_Leave; ... void textBox1_Leave(object sender, EventAr...
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Retrieve the maximum length of a VARCHAR column in SQL Server

... Use the built-in functions for length and max on the description column: SELECT MAX(LEN(DESC)) FROM table_name; Note that if your table is very large, there can be performance issues. share | im...
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What is the difference between JOIN and JOIN FETCH when using JPA and Hibernate

...ent attribute. Otherwise, (valid at least for PG) you might get ERROR: for SELECT DISTINCT, ORDER BY expressions must appear in select list – long Apr 21 at 14:08 add a commen...
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Get list of databases from SQL Server

... Execute: SELECT name FROM master.sys.databases This the preferred approach now, rather than dbo.sysdatabases, which has been deprecated for some time. Execute this query: SELECT name FROM master.dbo.sysdatabases or if you pref...
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What is the difference between JOIN and UNION?

...t -- completely different operations. Trivial example of UNION: mysql> SELECT 23 AS bah -> UNION -> SELECT 45 AS bah; +-----+ | bah | +-----+ | 23 | | 45 | +-----+ 2 rows in set (0.00 sec) similary trivial example of JOIN: mysql> SELECT * FROM -> (SELECT 23 AS bah...