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Database Administrators
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Andriy M

My about me is no longer blank.

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  • Member for 7 years, 3 months
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Top posts (340) All Questions Answers | Votes Newest

40 Why can't I use a CASE statement to see if a column exists and not SELECT from it? Jun 6 '14
36 Best way to write SQL Query that checks a column for non-NULL value or NULL Jul 23 '15
24 How to limit maximum number of rows in a table to just 1 Jun 21 '16
15 How to improve perfomance or Query Execution Time in MySQL? Jul 28 '15
15 Concatenate all values of the same XML element using XPath/XQuery May 6
15 Invert a Boolean expression which can return UNKNOWN Mar 21 '16
15 Query detailing differences between rows for a large amount of data May 31 '17
15 Generate permutations and combination for name column May 8
14 What are the advantages of a database design with single table for MtM relationships? Feb 26 '13
14 Find “n” consecutive free numbers from table Mar 18 '13
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