Write queries that provide the information asked by each question. Your queries shouldextract the answers directly. If you need additional step (e.g., hand counting the number ofrows) to get the answer after running a query, the query is not considered as the right queryfor the question.Copy and paste your queries and result table to a Word file and upload it on Canvas.There are two csv files: visit.csv and patient.csv. Below is the description of the data in eachFile.The visit.csv contains data for 17,580 emergency room (ER) visits:Column NameDescriptionID for each unique visit.ID for each unique patient.Reason for each ER visit. The values include: 'Pain back’, 'DifficultyBreathing', etc.Urgency of the visit reason. The values include: 'Lowest', 'Low','Medium', 'High’, 'Highest’, 'Unknown’.How a patient is transported to the emergency room. The valuesinclude: Private Vehicle, EMS Ground, EMS Air, Walk, Public Trans,Police/Jail.Whether a patient is admitted to hospital after the emergency roomVisitIDPatientIDVisitReasonUrgencyArrivalModeHospAdmitvisit. The values include: 'Yes' or 'No’.Cost of emergency room visit.Date of arrival to emergency room.Date of discharge from emergency room.CostArrivalDateDischargeDateThe vi:these patients is stored in patient.csv:(described above) includes data for 13,390 patients. The information for allDescriptionID for each unique patient.Column NamePatientIDGenderGender of a patient. The value is either 'Male' or 'Female'.AgeAge of a patient. How many distinct visit reasons start with the word "Pain"? Name the result column asNumPainReason.The result table should contain one column, one row.

SELECT COUNT(DISTINCT VisitReason) AS NumPainReason FROM VisitWHERE VisitReason LIKE 'Pain%';

Answered: How many distinct visit reasons start…

How many distinct visit reasons start with the word "Pain"? Name the result column as NumPainReason. The result table should contain one column, one row.

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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Concept explainers

Single Table

In a database management system, a single table is designed to obtain data of heterogeneous items. A single-table design with DynamoDB resolves the issue of raising multiple requests for the relevant data of an entity.

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How many distinct visit reasons start with the word "Pain"? Name the result column as
NumPainReason.
The result table should contain one column, one row.

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