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POSql subquery with inner join
 

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    <p>I've got these tables in my database:</p> <p>Tourist - this is the first table</p> <pre><code> Tourist_ID - primary key Extra_Charge_ID - foreign key name...etc... </code></pre> <p><strong>EXTRA_CHARGES</strong></p> <pre><code> Extra_Charge_ID - primmary key Excursion_ID - foreign key Extra_Charge_Description </code></pre> <p><strong>Tourist_Extra_Charges</strong></p> <pre><code>Tourist_Extra_charge_ID Extra_Charge_ID - foreign key Tourist_ID - foreign key </code></pre> <p><strong>Reservations</strong></p> <pre><code>Reservation_ID - primary key ..... </code></pre> <p><strong>Tourist_Reservations</strong></p> <pre><code>Tourist_Reservation_ID Reservation_ID - foreign key Tourist_ID - foreign key </code></pre> <p>So here is my example: I've got reservation with <code>Reservaton_ID</code> - 27 This reservation has two tourists with <code>Tourist_ID</code> - 86 and <code>Tourist_ID</code> - 87 This Tourist with id 86 has extra charges with <code>Extra_Charge_ID</code> - 7 and and <code>Extra_charge_ID</code> - 11;</p> <p>Is it possible to make sql query and the name and id of the tourist and then all of its extra charges</p> <p>So the output may look like this: </p> <pre><code>Tourist_ID : 86 Name:John Extra_Charge_ID - 7 Extra_Charge_ID - 11 Tourist_ID: 87 Name:Erika Extra-Charge_ID:10 </code></pre> <p>(Here is the query I made to get the extra_charge_description of all of the tourists with Reservation_ID = 27 but I don't know how to change it. to get the names above)</p> <pre><code>Select EXTRA_CHARGES.Extra_Charge_Description,TOURIST_EXTRA_CHARGES.Tourist_ID FROM EXTRA_CHARGES INNER JOIN TOURIST_EXTRA_CHARGES on EXTRA_CHARGES.Extra_Charge_ID = TOURIST_EXTRA_CHARGES.Extra_Charge_ID INNER JOIN TOURIST_RESERVATION on TOURIST_EXTRA_CHARGES.Tourist_ID = TOURIST_RESERVATION.Tourist_ID INNER JOIN RESERVATIONS on RESERVATIONS.Reservation_ID = TOURIST_RESERVATION.Reservation_ID where RESERVATIONS.Reservation_ID=27 </code></pre>
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    1. USmirkobrankovic
    1. USMilka Salkova
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    1. COI'm not sure what the question is.... You're askingif it is possible to have rows with different formats in a SQL query?
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      1. USOscar Pérez
    2. CO... or perhaps improve your query? Is it in tsql?
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      1. USMilen
    3. COThe field _Extra_Charge_ID_ should not be in your **Tourist** table: you already link tourists to extra charges via the **Tourist_Extra_Charges** table.
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      1. USJosien
 

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