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SQL Join Missing Records
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SQL Join Missing Records

MediumSQL · PostgreSQL

Problem

Write a SQL query to join two tables and find specific missing records.

Using the provided tables, identify records in expected_records for BATCH-100 that do not have a corresponding entry in processed_records. Include only records genuinely absent from the processed table.

Output

  1. One row per missing expected record
  2. Columns: record_id, record_label
  3. Sort by record_id ascending

Schema

expected_records
ColumnTypeDescription
record_idPKINTIdentifier of the expected record
batch_idVARCHAR(30)Batch containing the expected record
record_labelVARCHAR(100)Human-readable record label
processed_records
ColumnTypeDescription
processed_idPKINTIdentifier of the processing entry
record_idINTIdentifier of the processed record
processed_statusVARCHAR(20)Processing status recorded for the entry
Tablesexpected_recordsprocessed_records
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