大约有 47,000 项符合查询结果(耗时:0.0288秒) [XML]

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Can we pass parameters to a view in SQL?

..., like: CREATE FUNCTION v_emp (@pintEno INT) RETURNS TABLE AS RETURN SELECT * FROM emp WHERE emp_id=@pintEno; This allows you to use it as a normal view, with: SELECT * FROM v_emp(10) share | ...
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Rails 3: Get Random Record

...You can use the following trick on an indexed column (PostgreSQL syntax): select * from my_table where id >= trunc( random() * (select max(id) from my_table) + 1 ) order by id limit 1; share | ...
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Select mySQL based only on month and year

... SELECT * FROM projects WHERE YEAR(Date) = 2011 AND MONTH(Date) = 5 share | improve this answer | f...
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Oracle SELECT TOP 10 records

I have an big problem with an SQL Statement in Oracle. I want to select the TOP 10 Records ordered by STORAGE_DB which aren't in a list from an other select statement. ...
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Using group by on multiple columns

..., to do with who is attending what subject at a university: Table: Subject_Selection +---------+----------+----------+ | Subject | Semester | Attendee | +---------+----------+----------+ | ITB001 | 1 | John | | ITB001 | 1 | Bob | | ITB001 | 1 | Mickey | | ITB001 ...
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How to paste text to end of every line? Sublime 2

... Yeah Regex is cool, but there are other alternative. Select all the lines you want to prefix or suffix Goto menu Selection -> Split into Lines (Cmd/Ctrl + Shift + L) This allows you to edit multiple lines at once. Now you can add *Quotes (") or anything * at start and end...
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How to set variables in HIVE scripts

...riable substitution. e.g. hive> set CURRENT_DATE='2012-09-16'; hive> select * from foo where day >= ${hiveconf:CURRENT_DATE} similarly, you could pass on command line: % hive -hiveconf CURRENT_DATE='2012-09-16' -f test.hql Note that there are env and system variables as well, so you can r...
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How to keep onItemSelected from firing off on a newly instantiated Spinner?

... I would have expected your solution to work -- I though the selection event would not fire if you set the adapter before setting up the listener. That being said, a simple boolean flag would allow you to detect the rogue first selection event and ignore it. ...
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How to check if a table exists in a given schema

... whether a table (or view) exists, and the current user has access to it? SELECT EXISTS ( SELECT FROM information_schema.tables WHERE table_schema = 'schema_name' AND table_name = 'table_name' ); The information schema is mainly useful to stay portable across major versions and...
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How disable Copy, Cut, Select, Select All in UITextView

The UITextView 's Copy, Cut, Select, Select All functionality is shown by default when I press down on the screen. But, in my project the UITextField is only read only. I do not require this functionality. Please tell me how to disable this feature. ...