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9,733 reputation
4 27 50

Andriy M top 0.71% this year

Apparently, this user prefers to keep an air of mystery about them.

233 answers
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~295k people reached
  • Ukraine
  • Member for 4 years, 9 months
  • 878 profile views
  • Last seen 2 hours ago

Communities (8)

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Top Posts (233) All Questions Answers | Votes Newest

32 Best way to write SQL Query that checks a column for non-NULL value or NULL Jul 23 '15
28 Why can't I use a CASE statement to see if a column exists and not SELECT from it? Jun 6 '14
20 How to limit maximum number of rows in a table to just 1 Jun 21
14 Find “n” consecutive free numbers from table Mar 18 '13
14 What are the advantages of a database design with single table for MtM relationships? Feb 26 '13
13 How to improve perfomance or Query Execution Time in MySQL? Jul 28 '15
13 How to get difference in value over 15min interval? Mar 30
12 Invert a Boolean expression which can return UNKNOWN Mar 21
12 SELECT DISTINCT on multiple columns May 28 '15
12 Trying to find the last time that a value has changed Jun 19 '13
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