大约有 47,000 项符合查询结果(耗时:0.0288秒) [XML]

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Exporting data In SQL Server as INSERT INTO

...something else, see screenshot below this one 2008 R2 or later eg 2012 Select "Types of Data to Script" which can be "Data Only", "Schema and Data" or "Schema Only" - the default). And then there's a "SSMS Addin" Package on Codeplex (including source) which promises pretty much the same func...
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SQL JOIN - WHERE clause vs. ON clause

... They are not the same thing. Consider these queries: SELECT * FROM Orders LEFT JOIN OrderLines ON OrderLines.OrderID=Orders.ID WHERE Orders.ID = 12345 and SELECT * FROM Orders LEFT JOIN OrderLines ON OrderLines.OrderID=Orders.ID AND Orders.ID = 12345 The first will re...
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“405 method not allowed” in IIS7.5 for “PUT” method

...ick on "WebDAV". 5.Click on "Request Restrictions". 6.In the tab "Verbs" select "All verbs" . 7.Press OK. share | improve this answer | follow | ...
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SQL standard to escape column names?

... For MySQL, use back ticks `. For instance: SELECT `column`, `column2` FROM `table` share | improve this answer | follow | ...
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How can I select all elements without a given class in jQuery?

... You can use the .not() method or :not() selector Code based on your example: $("ul#list li").not(".active") // not method $("ul#list li:not(.active)") // not selector share | ...
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Is it possible to use raw SQL within a Spring Repository

... @user454322, parameters start with 1, so it's: @Query(value = "SELECT * FROM USERS WHERE EMAIL_ADDRESS = ?1", nativeQuery = true) – Jacob van Lingen Jan 6 '17 at 9:20 ...
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How to select rows with one or more nulls from a pandas DataFrame without listing columns explicitly

... 0.0 NaN 0.0 3 0.0 1.0 2.0 3.0 4 NaN 0.0 NaN NaN If you want to select the rows that have two or more columns with null value, you run the following: >>> qty_of_nuls = 2 >>> df.iloc[df[(df.isnull().sum(axis=1) >=qty_of_nuls)].index] 0 1 2 3 1 0.0 NaN 0...
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How to select the row with the maximum value in each group

In a dataset with multiple observations for each subject I want to take a subset with only the maximum data value for each record. For example, with a following dataset: ...
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Right query to get the current number of connections in a PostgreSQL DB

...ires aren't equivalent. The equivalent version of the first one would be: SELECT sum(numbackends) FROM pg_stat_database; In that case, I would expect that version to be slightly faster than the second one, simply because it has fewer rows to count. But you are not likely going to be able to measu...
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How to delete a row by reference in data.table?

...el.idxs' vs. 'keep.idxs' keep.idxs <- setdiff(DT[, .I], del.idxs); # select row indexes to keep cols = names(DT); DT.subset <- data.table(DT[[1]][keep.idxs]); # this is the subsetted table setnames(DT.subset, cols[1]); for (col in cols[2:length(cols)]) { DT.subset[, (col) := DT[...