SQLazy: Search for Adjacent Records at a Specified Offset Within Groups
Problem Description In a table, ProductionLine_Number is the grouping field, and within each group records are sorted by date_Time. The task is to s…
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SQLazy：Conditional Running Total with Reset
Problem Description Conditional running total with reset: restart accumulation when logic is 't'. An event table table_t1 records event sequences wi…
SQLazy: Merging Overlapping Time Intervals
Problem description A table stores multiple time intervals for each account, and the intervals may overlap. Source data: Expected output (merge over…