Thorsten Kettner

Thorsten Kettner has asked 3 questions and find answers to 166 problems.

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Thorsten Kettner questions

HashSet limit - how to proceed?
Insert into a query

Thorsten Kettner answers

Selecting the last entry of each day in a timestamp and corresponding values
GROUP BY Conditions
Pick up any element in SQL "group by"
Is it a good practice to JOIN a UNION result in outer query in MySQL
Oracle give more priority to like %term than %term%
Compare timestamps in Oracle
mysql create a composite key with different data types
Design conditional relationship
Postgres: join two queries and select based on result
Count distinct of multiple columns