大约有 40,000 项符合查询结果(耗时:0.0221秒) [XML]

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INSERT INTO…SELECT for all MySQL columns

... manual. Try this: INSERT INTO this_table_archive (col1, col2, ..., coln) SELECT col1, col2, ..., coln FROM this_table WHERE entry_date < '2011-01-01 00:00:00'; If the id columns is an auto-increment column and you already have some data in both tables then in some cases you may want to omit t...
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How do I replace text in a selection?

...e you have open. There is an icon option which when hovered over says "In Selection" that you can select to find and replace within a selection. I've pointed to the correct icon in the screenshot below. Hit replace all, and voila, all instances of '0' will be replaced with '255'. Note: this ...
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Can we have multiple “WITH AS” in single sql - Oracle SQL

... You can do this as: WITH abc AS( select FROM ...) , XYZ AS(select From abc ....) /*This one uses "abc" multiple times*/ Select From XYZ.... /*using abc, XYZ multiple times*/ ...
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How to randomly select an item from a list?

...ults, but depending on the start seed, it's not guaranteed. If you want to select n distinct random elements from a list lst, use random.sample(lst, n) – Graham Dec 23 '18 at 17:02 ...
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MySQL get row position in ORDER BY

... Use this: SELECT x.id, x.position, x.name FROM (SELECT t.id, t.name, @rownum := @rownum + 1 AS position FROM TABLE t JOIN (SELECT @rownum := 0) r ORDER BY t.name)...
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Is it possible to style a select box? [closed]

I've got an HTML select box that I need to style. I'd prefer to use just CSS but if I have to I'll use jQuery to fill in the gaps. ...
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When to use Common Table Expression (CTE)

...ing well? Can someone give me a simple example of limitations with regular select, derived or temp table queries to make the case of CTE? Any simple examples would be highly appreciated. ...
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UITableview: How to Disable Selection for Some Rows but Not Others

... able to click it at all) The table contains two groups. I want to disable selection for the first group only but not the second group. Clicking the first row of second group navigates to my tube player view . ...
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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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Is there any difference between GROUP BY and DISTINCT

...CT and distinct by UNION cause an oracle error, but GROUP BY worked; I was selecting only 1 column from a view and not using any aggregation; I'm still baffled why it required it, but it does confirm there is some difference in the execution. As others point out, it also lets you GROUP BY columns no...