sql-tutorial/chapter4_solutions.html at gh-pages · OpenTechSchool/sql-tutorial · GitHub

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  <title>Solutions - Who was the string puller?</title>
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<h1>Solutions - Who was the string puller?</h1>


<ol start="29">
<li><p class=answer>The tables <code>account</code> and <code>bank_transaction</code></p>
</li>

<li><p class=answer>Via foreign key on <code>bank_transaction</code> referencing the table <code>account</code>, both have a primary key and connection to table name via the column <code>name</code> <em>without foreign constraint</em>.</p>
</li>

<li><p class=answer>Via the column <code>name</code> in the tables <code>person</code> and <code>account</code>.</p></li>

<li><p class=answer>203993 and 203987</p>
</li>

<li><p class=answer>Use</p>
<pre>
select * from account where name
like 'Sara%' or name like 'Philip%';
</pre></li>

<li><p class=answer>Use</p>
<pre>
select sum(amount) from bank_transaction
where account_number_fk = 203987;
</pre>
<p class=answer>and</p>
<pre>
select  sum(amount) from bank_transaction
where account_number_fk = (select account_number_pk
from account where name like 'Sara%');
</pre></li>

<li><p class=answer>Use</p>
<pre>
select sum(amount) from bank_transaction
where account_number_fk = 203987
and  date > "2014-10-22" and date < "2014-10-26";
</pre></li>

<li><p class=answer>Use</p>
<pre>
select account_number_fk, sum(amount)
from bank_transaction where date > "2014-10-22";
</pre>
<p class=answer>and</p>
<pre>
select account_number_fk, sum(amount)
from bank_transaction where date > "2014-10-22"
and date < "2014-10-26"
group by account_number_fk having sum(amount) > 10000;
</pre>
</li>


</ol>

<p><a href="chapter4.html">Back to Tutorial</a></p>

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