大约有 3,568 项符合查询结果(耗时:0.0231秒) [XML]

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What is the difference between a stored procedure and a view?

...ing from those tables A LOT... instead of doing the join in EVERY piece of SQL, I would define a view like: CREATE VIEW vw_user_profile AS SELECT A.user_id, B.profile_description FROM tbl_user A LEFT JOIN tbl_profile B ON A.user_id = b.user_id GO Thus, if I want to query profile_description b...
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OR is not supported with CASE Statement in SQL Server

... This really stinks- t-sql can't handle an "or" in a case statement. Come on Microsoft time to grow up from the toy database status. – Rich Bianco Jan 11 '18 at 17:46 ...
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Is there any difference between GROUP BY and DISTINCT

I learned something simple about SQL the other day: 26 Answers 26 ...
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How to format a java.sql Timestamp for displaying?

How do I formate a java.sql Timestamp to my liking ? ( to a string, for display purposes) 7 Answers ...
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SQL RANK() versus ROW_NUMBER()

I'm confused about the differences between these. Running the following SQL gets me two idential result sets. Can someone please explain the differences? ...
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How to update Identity Column in SQL Server?

I have SQL Server database and I want to change the identity column because it started with a big number 10010 and it's related with another table, now I have 200 records and I want to fix this issue before the records increases. ...
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Best way to get identity of inserted row?

... known bug with SCOPE_IDENTITY() returning the wrong values: blog.sqlauthority.com/2009/03/24/… the work around is to not run the INSERT in a Multi Processor Parallel Plan or use the OUTPUT clause – KM. Jan 28 '10 at 14:59 ...
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How to drop SQL default constraint without knowing its name?

In Microsoft SQL Server, I know the query to check if a default constraint exists for a column and drop a default constraint is: ...
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Generate random int value from 3 to 6

Is it possible in Microsoft SQL Server generate random int value from Min to Max (3-9 example, 15-99 e.t.c) 10 Answers ...
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SQL to find the number of distinct values in a column

... An sql sum of column_name's unique values and sorted by the frequency: SELECT column_name, COUNT(*) FROM table_name GROUP BY column_name ORDER BY 2 DESC; ...