大约有 47,000 项符合查询结果(耗时:0.0414秒) [XML]

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How to Delete using INNER JOIN with SQL Server?

...helpful for you - DELETE FROM dbo.WorkRecord2 WHERE EmployeeRun IN ( SELECT e.EmployeeNo FROM dbo.Employee e WHERE ... ) Or try this - DELETE FROM dbo.WorkRecord2 WHERE EXISTS( SELECT 1 FROM dbo.Employee e WHERE EmployeeRun = e.EmployeeNo AND .... ) ...
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MySQL Results as comma separated list

... You can use GROUP_CONCAT to perform that, e.g. something like SELECT p.id, p.name, GROUP_CONCAT(s.name) AS site_list FROM sites s INNER JOIN publications p ON(s.id = p.site_id) GROUP BY p.id, p.name; share ...
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How do I turn off Oracle password expiration?

...rtain user profile in Oracle first check which profile the user is using: select profile from DBA_USERS where username = '<username>'; Then you can change the limit to never expire using: alter profile <profile_name> limit password_life_time UNLIMITED; If you want to previously che...
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How to display default text “--Select Team --” in combo box on pageload in WPF?

...ComboBox Name="MyComboBox" IsEditable="True" IsReadOnly="True" Text="-- Select Team --" /> You'll obviously need to add your other options, but this is probably the simplest way to do it. There is however one downside to this method which is while the text inside your combo box will not be ...
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How to get script of SQL Server data? [duplicate]

... the SQL Server Management Studio you can right click on your database and select: Tasks -> Generate Scripts Then simply proceed through the wizard. Make sure to set 'Script Data' to TRUE when prompted to choose the script options. SQL Server 2008 R2 Further reading: Robert Burke: SQL Se...
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How do I generate random number for each row in a TSQL Select?

...mber. I'd suggest using convert(varbinary,newid()) as the seed argument: SELECT table_name, 1.0 + floor(14 * RAND(convert(varbinary, newid()))) magic_number FROM information_schema.tables newid() is guaranteed to return a different value each time it's called, even within the same batch, so usi...
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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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How to fetch the row count for all tables in a SQL SERVER database [duplicate]

... EXEC sp_MSForEachTable @command1='INSERT #counts (table_name, row_count) SELECT ''?'', COUNT(*) FROM ?' SELECT table_name, row_count FROM #counts ORDER BY table_name, row_count DESC DROP TABLE #counts The output will be a list of tables and their row counts. If you just want the total row count...
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How to paste over without overwriting register

Does anyone know of a way to paste over a visually selected area without having the selection placed in the default register? ...
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Store select query's output in one array in postgres

... There are two ways. One is to aggregate: SELECT array_agg(column_name::TEXT) FROM information.schema.columns WHERE table_name = 'aean' The other is to use an array constructor: SELECT ARRAY( SELECT column_name FROM information.schema.columns WHERE table_name = ...