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Write an SQL query to extract the answer directly.

Write an SQL query to extract the answer directly.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Write an SQL query to extract the answer directly.

What is the most common visit reason of patients in their 20s (Age 20~29)? Report the visit reason along with its occurrences (i.e., the number of ER visits). • Name the number of occurrences as popular20sER. • The result table should contain only one row and two columns.
Transcribed Image Text:What is the most common visit reason of patients in their 20s (Age 20~29)? Report the visit reason along with its occurrences (i.e., the number of ER visits). • Name the number of occurrences as popular20sER. • The result table should contain only one row and two columns.
Tables patient Columns PatientID Gender Age Indexes Foreign Keys Triggers visit Columns VisitID PatientID VisitReason Urgency ArrivalMode HospAdmit Cost Arrivaldate Dischargedate Indexes Foreign Keys Triggers
Transcribed Image Text:Tables patient Columns PatientID Gender Age Indexes Foreign Keys Triggers visit Columns VisitID PatientID VisitReason Urgency ArrivalMode HospAdmit Cost Arrivaldate Dischargedate Indexes Foreign Keys Triggers
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