Manufacturing Pipeline Bottlenecks
You are analyzing production data for a high-volume manufacturing facility. The table
parts_assembly tracks individual steps in the assembly process for various components. A part is considered 'In Progress' if it has at least one entry in the table. A part is considered 'Unfinished' if there is at least one step in its sequence where the finish_date is missing (NULL). Write a query to return a unique list of all parts that are currently in the assembly process but have not yet been completed.PostgreSQLCTEPartial Index
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