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<h1><code>IF</code> Statement</h1>Takes one code path or the other based on an SQL expression. The <span style=
  "font-style: italic;">condition</span> expression must evaluate to the integer 0 or 1.
  <h2>Syntax</h2><img src="art/if-stmt-syntax.svg" alt="" class="railroad" moz-do-not-send="true" width="604" height=
  "311"><br>
  <h2>Parameters</h2>
  <ul class="args">
    <li><i>condition</i>: integer (0-1)<br>
    If this expression evaluates to 1, then the <span style="font-style: italic;">statement-if-true</span> statements
    are executed. Otherwise, the <span style="font-style: italic;">statement-if-false</span> statements are
    executed.</li>
    <li><i>statement-if-true</i>: statement<br>
    The statements to execute if the condition is 1. If more than one <span style=
    "font-style: italic;">statement-if-true</span> statement is desired, the <code>BEGIN</code> and <code>END</code>
    keywords must be used.</li>
    <li><i>statement-if-false</i>: statement<br>
    The statements to execute if the condition is 0. If more than one <span style=
    "font-style: italic;">statement-if-false</span> statement is desired, the <code>BEGIN</code> and <code>END</code>
    keywords must be used.</li>
  </ul>
  <h2>Example</h2>
  <pre>DECLARE PARAMETER @foo = 111;<br>DECLARE PARAMETER @bar = 222;<br><br><i>-- The simplest IF tests a condition and executes a single</i><i><br></i><i>-- statement if true.</i><br>IF 1  <i>-- Always true.</i><br>    PRINT 'Hi';  <i>-- Always prints.</i><br><br>IF @foo = 123<br>    PRINT 'Hi';  <i>-- Prints or not depending on @foo.</i><br><br><i>-- An ELSE block will run if the IF condition is false.</i><i><br></i>IF @foo &gt; @bar<br>    PRINT 'Foo';<br>ELSE<br>    PRINT 'Bar';<br><br><i>-- Check a series of conditions with ELSE IF.</i><br>IF @foo = 111<br>    PRINT 'First condition'<br>ELSE IF @bar = 111<br>    PRINT 'Second condition'<br>ELSE IF @foo = 222 AND @bar = 222<br>    PRINT 'Third condition'<br>ELSE<br>    PRINT 'None of the above'<br><br><i>-- Add BEGIN and END to any block to execute multiple statements.</i><br>IF @foo = 111 BEGIN<br>    PRINT 'Hello...'<br>    PRINT 'World!'<br>END<br></pre>
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