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<title>About Control Statements</title>
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<h1>About Control Statements</h1>
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<p>PL/SQL has three categories of control statements:</p>
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<p><a id="sthref422" name="sthref422"></a><span class="bold">Conditional selection statements</span>, which let you execute different statements for different data values.</p>
<p>The conditional selection statements are <code>IF</code> and and <code>CASE</code>.</p>
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<p><a id="sthref423" name="sthref423"></a><span class="bold">Loop statements</span>, which let you repeat the same statements with a series of different data values.</p>
<p>The loop statements are <code>FOR</code> <code>LOOP</code>, <code>WHILE</code> <code>LOOP</code> and basic <code>LOOP</code>.</p>
<p>The <code>EXIT</code> statement transfers control to the end of a loop. The <code>CONTINUE</code> statement exits the current iteration of a loop and transfers control to the next iteration. Both <code>EXIT</code> and <code>CONTINUE</code> have an optional <code>WHEN</code> clause, in which you can specify a condition.</p>
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<p><a id="sthref424" name="sthref424"></a><span class="bold">Sequential control statements</span>, which allow you to go to a specified, labeled statement, or to do nothing.</p>
<p>The sequential control statements are <code>GOTO</code> and and <code>NULL</code>.</p>
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<h2>Related Topics</h2>
<p><a href="javascript:open('http://www.oracle.com/pls/db112/lookup?id=LNPLS00401','newWindow').focus()"><span class="italic">Oracle Database PL/SQL Language Reference</span></a></p>
<p><a href="tdddg_subprograms025.htm#CIHHFJFJ">Controlling Program Flow</a></p>
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