大约有 48,000 项符合查询结果(耗时:0.0604秒) [XML]

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How to find all the tables in MySQL with specific column names in them?

... all tables with columns columnA or ColumnB in the database YourDatabase: SELECT DISTINCT TABLE_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE COLUMN_NAME IN ('columnA','ColumnB') AND TABLE_SCHEMA='YourDatabase'; ...
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How to determine the number of days in a month in SQL Server?

...er of days in the month. DECLARE @ADate DATETIME SET @ADate = GETDATE() SELECT DAY(EOMONTH(@ADate)) AS DaysInMonth share | improve this answer | follow | ...
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LINQ to SQL - Left Outer Join with multiple join conditions

...g.Where(f => f.otherid == 17).DefaultIfEmpty() where p.companyid == 100 select f.value Or you could use a subquery: from p in context.Periods join f in context.Facts on p.id equals f.periodid into fg from fgi in (from f in fg where f.otherid == 17 select f).DefaultIfE...
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Cannot ping AWS EC2 instance

...ICMP rule Protocol: Echo Request Port: N/A Source: your choice (I would select Anywhere to be able to ping from any machine) share | improve this answer | follow ...
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IntelliJ and Tomcat…changed files are not automatically recognized by Tomcat

...ebug configuration (Run > Edit Configurations) Click the add icon, select 'artifact' and then select pizza_mvc:war exploded: Modify 'On update action' and 'On frame diactivation': Everytime you want to refresh your resources, press <Ctrl> + F10 ...
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Extract a dplyr tbl column as a vector

...2 3.62 3.54 4.11 A nice way to do this in v0.2 of dplyr: iris2 %>% select(Species) %>% collect %>% .[[5]] Or if you prefer: iris2 %>% select(Species) %>% collect %>% .[["Species"]] Or if your table isn't too big, simply... iris2 %>% collect %>% .[["Species"]] ...
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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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XPath: How to select nodes which have no attributes?

Using XPath, how to select nodes which have no attributes (where attribute count = 0)? 3 Answers ...
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UITableView didSelectRowAtIndexPath: not being called on first tap

I'm having an issue with UITableView's didSelectRowAtIndexPath . 16 Answers 16 ...
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Pycharm: run only part of my Python file

... easier way. go to File -> Settings -> Keymap Search for Execute Selection in Console and reassign it to a new shortcut, like Crl + Enter. This is the same shortcut to the same action in Spyder and R-Studio. sha...