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Delete duplicate records in SQL Server?

Consider a column named EmployeeName table Employee . The goal is to delete repeated records, based on the EmployeeName field. ...
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Distributed sequence number generation?

...ing now. You'll need to differentiate between sequence numbers and unique IDs that are (optionally) loosely sortable by a specific criteria (typically generation time). True sequence numbers imply knowledge of what all other workers have done, and as such require shared state. There is no easy way ...
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Exposing database IDs - security risk?

I've heard that exposing database IDs (in URLs, for example) is a security risk, but I'm having trouble understanding why. ...
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How to delete from select in MySQL?

...ner subquery result (looks rather hacky, though): DELETE FROM posts WHERE id IN ( SELECT * FROM ( SELECT id FROM posts GROUP BY id HAVING ( COUNT(id) > 1 ) ) AS p ) Or use joins as suggested by Mchl. sh...
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How do I perform the SQL Join equivalent in MongoDB?

... The new $lookup operator added to the aggregation pipeline is essentially identical to a left outer join: https://docs.mongodb.org/master/reference/operator/aggregation/lookup/#pipe._S_lookup From the docs: { $lookup: { from: <collection to join>, localField: <fiel...
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How do I find a stored procedure containing ?

...TION LIKE '%Foo%' AND ROUTINE_TYPE='PROCEDURE' SELECT OBJECT_NAME(id) FROM SYSCOMMENTS WHERE [text] LIKE '%Foo%' AND OBJECTPROPERTY(id, 'IsProcedure') = 1 GROUP BY OBJECT_NAME(id) SELECT OBJECT_NAME(object_id) FROM sys.sql_modules WHERE OBJECTPROPERTY(object_...
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How to annotate MYSQL autoincrement field with JPA annotations

... To use a MySQL AUTO_INCREMENT column, you are supposed to use an IDENTITY strategy: @Id @GeneratedValue(strategy=GenerationType.IDENTITY) private Long id; Which is what you'd get when using AUTO with MySQL: @Id @GeneratedValue(strategy=GenerationType.AUTO) private Long id; Which is a...
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How to get multiple counts with one SQL query?

...ally the same thing as a PIVOT function in some RDBMS: SELECT distributor_id, count(*) AS total, sum(case when level = 'exec' then 1 else 0 end) AS ExecCount, sum(case when level = 'personal' then 1 else 0 end) AS PersonalCount FROM yourtable GROUP BY distributor_id ...
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Explicitly set Id with Doctrine when using “AUTO” strategy

My entity uses this annotation for it's ID: 7 Answers 7 ...
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Smooth scroll to div id jQuery

I've been trying to get a scroll to div id jquery code to work correctly. Based on another stack overflow question i tried the following ...