大约有 47,000 项符合查询结果(耗时:0.0378秒) [XML]

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Remove the last character in a string in T-SQL?

... ELSE LEFT(@String, LEN(@String) - 1) END ) END SELECT @String share | improve this answer | follow | ...
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Changing the selected option of an HTML Select element

In my HTML, I have a <select> with three <option> elements. I want to use jQuery to check each option's value against a Javascript var . If one matches, I want to set the selected attribute of that option. How would I do that? ...
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Duplicating a MySQL table, indices, and data

...ese 2 queries: CREATE TABLE newtable LIKE oldtable; INSERT INTO newtable SELECT * FROM oldtable; To copy just structure and data use this one: CREATE TABLE tbl_new AS SELECT * FROM tbl_old; I've asked this before: Copy a MySQL table including indexes ...
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Which method performs better: .Any() vs .Count() > 0?

...re generated SQLs. Beauties as you can see ;) ANY: exec sp_executesql N'SELECT TOP (1) [Project2].[ContactId] AS [ContactId], [Project2].[CompanyId] AS [CompanyId], [Project2].[ContactName] AS [ContactName], [Project2].[FullName] AS [FullName], [Project2].[ContactStatusId] AS [ContactStatusI...
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MySQL vs MongoDB 1000 reads

...s://github.com/webcaetano/mongo-mysql 10 rows mysql insert: 1702ms mysql select: 11ms mongo insert: 47ms mongo select: 12ms 100 rows mysql insert: 8171ms mysql select: 10ms mongo insert: 167ms mongo select: 60ms 1000 rows mysql insert: 94813ms (1.58 minutes) mysql select: 13ms mongo inser...
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Get list of all tables in Oracle?

... SELECT owner, table_name FROM dba_tables This is assuming that you have access to the DBA_TABLES data dictionary view. If you do not have those privileges but need them, you can request that the DBA explicitly grants you...
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How do you use variables in a simple PostgreSQL script?

...c/sql-do.html ) DO $$ DECLARE v_List TEXT; BEGIN v_List := 'foobar' ; SELECT * FROM dbo.PubLists WHERE Name = v_List; -- ... END $$; Also you can get the last insert id: DO $$ DECLARE lastid bigint; BEGIN INSERT INTO test (name) VALUES ('Test Name') RETURNING id INTO lastid; ...
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SQL Server: Filter output of sp_who2

... SPID_1 INT, REQUESTID INT ) INSERT INTO @Table EXEC sp_who2 SELECT * FROM @Table WHERE .... And filter on what you require. share | improve this answer | ...
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Postgres and Indexes on Foreign Keys and Primary Keys

...hema(s) from your program, all the information is on hand in the catalog: select n.nspname as "Schema" ,t.relname as "Table" ,c.relname as "Index" from pg_catalog.pg_class c join pg_catalog.pg_namespace n on n.oid = c.relnamespace join pg_catalog.pg_index ...
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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...