大约有 47,000 项符合查询结果(耗时:0.0374秒) [XML]

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How do I obtain a Query Execution Plan in SQL Server?

...ution plan in SQL Server Management Studio, or right click on the plan and select "Save Execution Plan As ..." to save the plan to a file in XML format. Method 2 - Using SHOWPLAN options This method is very similar to method 1 (in fact this is what SQL Server Management Studio does internally), ho...
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Convert timestamp to date in MySQL query

... SELECT * FROM users WHERE DATE_FORMAT(FROM_UNIXTIME(users.user_created_at),'%Y-%b-%e') = '2015-03-06' is this correct format or should i modify this? – Dheeraj Thedijje Mar 7 '18 at 11:4...
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What does the “+” (plus sign) CSS selector mean?

... See adjacent selectors on W3.org. In this case, the selector means that the style applies only to paragraphs directly following another paragraph. A plain p selector would apply the style to every paragraph in the page. This will onl...
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How to select a radio button by default? [duplicate]

I have some radio buttons and I want one of them to be set as selected by default when the page is loaded. How can I do that? ...
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Ruby: Can I write multi-line string with no concatenation?

... HEREDOC syntax (via this link): p <<END_SQL.gsub(/\s+/, " ").strip SELECT * FROM users ORDER BY users.id DESC END_SQL # >> "SELECT * FROM users ORDER BY users.id DESC" The latter would mostly be for situations that required more flexibility in the processing. I personall...
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Copy a table from one database to another in Postgres

... follow these steps: In pgAdmin, right click the table you want to move, select "Backup" Pick the directory for the output file and set Format to "plain" Click the "Dump Options #1" tab, check "Only data" or "only Schema" (depending on what you are doing) Under the Queries section, click "Use Colu...
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Linq select objects in list where exists IN (A,B,C)

I have a list of orders . I want to select orders based on a set of order statuses. 5 Answers ...
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How do I get textual contents from BLOB in Oracle SQL

...S of the text stored in the BLOB, CS of the database used for VARCHAR2) : select utl_raw.cast_to_varchar2(dbms_lob.substr(BLOB_FIELD)) from TABLE_WITH_BLOB where ID = '<row id>'; share | imp...
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Hibernate Criteria returns children multiple times with FetchType.EAGER

....class) .list(); List result = session.createQuery("select o from Order o left join fetch o.lineItems").list(); All of these examples produce the same SQL statement: SELECT o.*, l.* from ORDER o LEFT OUTER JOIN LINE_ITEMS l ON o.ID = l.ORDER_ID Want to know why th...
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Select a Dictionary with LINQ

I have used the "select" keyword and extension method to return an IEnumerable<T> with LINQ, but I have a need to return a generic Dictionary<T1, T2> and can't figure it out. The example I learned this from used something in a form similar to the following: ...