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How to delete duplicate rows in SQL Server?
...
RN = ROW_NUMBER()OVER(PARTITION BY col1 ORDER BY col1)
FROM dbo.Table1
)
DELETE FROM CTE WHERE RN > 1
DEMO (result is different; I assume that it's due to a typo on your part)
COL1 COL2 COL3 COL4 COL5 COL6 COL7
john 1 1 1 1 1 1
sa...
How does one generate a random number in Apple's Swift language?
...near, additive feedback, random number generator, employing a default table of size 31 long integers. It returns successive pseudo-random numbers in the range from 0 to (231)-1. The period of this random number generator is very large, approximately 16*((231)-1)." ... Thanks a lot a...
Best XML parser for Java [closed]
...g parser implementation in a standard way. The code should be much more portable, and when you realise that a specific parser has grown too old, you can replace it with another without changing a line of your code (if you do it correctly).
Basically there are three ways of handling XML in a standar...
MySQL get row position in ORDER BY
With the following MySQL table:
9 Answers
9
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How can I make a div not larger than its contents?
... if someone wonders : one can then center the parent of the table by setting "text-align:center" on it's parent and "text-align:left" on it (e.g. <body style="text-align:center"><span style="text-align:left; display:inline-block;"><table>...</table></span>...
Compare two MySQL databases [closed]
... sets, etc. mysqldump --opt --compact --skip-extended-insert -u user -p db table > file.sql
– zanlok
Mar 6 '12 at 21:53
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MySQL INSERT INTO table VALUES.. vs INSERT INTO table SET
What is main difference between INSERT INTO table VALUES .. and INSERT INTO table SET ?
3 Answers
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Parse JSON String into a Particular Object Prototype in JavaScript
... browsers including IE and older Android browsers. kangax.github.io/compat-table/es6/…
– BMiner
May 16 '17 at 14:10
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When and why are database joins expensive?
...nality when (if) they set up indexes.
It is important to understand that table scans (examination of every row in a table in the course of producing a join) are rare in practice. A query optimiser will choose a table scan only when one or more of the following holds.
There are fewer than 200 row...
Does the join order matter in SQL?
... neither predicate can be satisfied by a row in which all columns from one table are NULL, than to say that it's associative as long as the predicates don't involve IS NULL or 'a function that is related to nulls'. One can easily imagine a predicate that satisfies the former description but not the ...