David דודו Markovitz

David דודו Markovitz has asked 4 questions and find answers to 152 problems.

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David דודו Markovitz questions

SQL Challenge/Puzzle: Given a stack trace - How to find the top element at each point in time?
SQL Challenge/Puzzle: How to merge nested ranges?
How to list tables in their dependency order (based on foreign keys)?

David דודו Markovitz answers

How to optimise a query on a large dataset?
Hive search using csv file
Substring in a column
Is there a possibility to create a Histogram using Kusto Query Language?
Is it possible to compare a value against an array of values in Kusto?
How to correctly use in for string list in KQL
Self joining table with a condition
T-SQL windowing functions - counting the gaps
Inserting into table a number of rows that equal the number of open rows if there are more than 15 of them
how to decrease the number of mapper in hive while the file is bigger than block size?