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Pandas Data Manipulation Live
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Pandas Data Manipulation Live

MediumSQL · PostgreSQL

Problem

Describe how you would solve a live data manipulation task in pandas when given a dataset and specific output requirements.

For this SQL version, use the supplied relational data and produce the required summary. Include qualifying records from 2025, treat missing amounts as zero in the final totals, and retain entities without qualifying records.

Output

  1. One row per entity with entity_id, entity_name, completed_count, completed_amount, and activity_state
  2. Include completed records dated from 2025-01-01 through 2025-12-31
  3. Sort by completed_amount descending, then entity_id ascending

Schema

entities
ColumnTypeDescription
entity_idPKINTUnique entity identifier
entity_nameVARCHAR(100)Entity display name
dataset_rows
ColumnTypeDescription
row_idPKINTUnique dataset row identifier
entity_idINTReferenced entity identifier
event_dateDATEDate associated with the row
statusVARCHAR(20)Row processing status
amountDECIMAL(12,2)Amount associated with the row
Tablesdataset_rowsentities
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