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<p class="MsoNormal">Hi All,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">From the SQL manual:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt;text-autospace:none"><span style="font-size:12.0pt;font-family:TimesNewRomanPSMT;color:#0070C0">A WHILE statement can be labeled. The label enables the ENDLOOP statement to break out of a<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;text-autospace:none"><span style="font-size:12.0pt;font-family:TimesNewRomanPSMT;color:#0070C0">nested series of WHILE statements to a specified level. The label precedes WHILE and is<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;text-autospace:none"><span style="font-size:12.0pt;font-family:TimesNewRomanPSMT;color:#0070C0">specified by a unique alphanumeric identifier followed by a colon, as in the following:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;text-autospace:none"><span style="font-size:8.5pt;font-family:"Courier New";color:#0070C0">A: WHILE...<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:12.0pt;font-family:TimesNewRomanPSMT;color:#0070C0">The label must be a legal object name…<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:TimesNewRomanPSMT"><o:p> </o:p></span></p>
<p class="MsoNormal">So why is it that the label can only be a single alphanumeric character? Anything other than a single character causes a syntax error.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Eg: <span style="font-family:"Courier New"">create procedure weird_label<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">as declare<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> loop integer4 not null not default;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> msg varchar(256) not null not default;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">begin<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> loop = 0;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> <span style="background:yellow;mso-highlight:yellow">
Outer:</span> while (:loop < 3) do<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> msg = 'Loop ' + varchar(:loop);<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> message :msg;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> loop = loop + 1;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> endwhile;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> msg = 'Finished with loop = ' + varchar(:loop);<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> message :msg;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">end;</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">E_US09C4 Syntax error on line 4. Last symbol read was: 'Outer'.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Take the above procedure and replace label ‘Outer’ with ‘O’ and it will work.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Martin Bowes<o:p></o:p></p>
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