Tema: mysql. kodel taip daros?
Autorius: amba
Data: 2009-11-06 00:38:37
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<DIV><FONT size=2 face=Arial>yra&nbsp;2 lentos ir jas joininu</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT>&nbsp;</DIV>
<DIV><FONT size=2 face=Arial>SELECT&nbsp;</FONT></DIV>
<DIV><FONT size=2 face=Arial>&nbsp;&nbsp;&nbsp; t1.col, </FONT></DIV>
<DIV><FONT size=2 face=Arial>&nbsp;&nbsp;&nbsp; t2.col&nbsp;</FONT></DIV>
<DIV><FONT size=2 face=Arial>FROM&nbsp;t1 </FONT></DIV>
<DIV><FONT size=2 face=Arial>LEFT JOIN&nbsp;t2&nbsp;ON t1.t2_id = t2.id 
</FONT></DIV>
<DIV><FONT size=2 face=Arial>WHERE&nbsp;t1.year =&nbsp;2005 </FONT></DIV>
<DIV><FONT size=2 face=Arial>&nbsp;&nbsp;&nbsp;&nbsp;AND t2.id = 1</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT>&nbsp;</DIV>
<DIV><FONT size=2 face=Arial>jeigu t1.year tokio irasho ner, bet yra t2.id, tai 
rezultate tureciau gaut visur null. taip?</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT>&nbsp;</DIV>
<DIV><FONT size=2 face=Arial>bet jeigu selecte sumetu sias 2 
funkcijas:&nbsp;select FORMAT(SUM(t1.col), 2) AS test, t2.col 
from....</FONT></DIV>
<DIV><FONT size=2 face=Arial>tada rodo tablo t2.col eilute, kurios id = 1, o 
'test', aisku, null</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT>&nbsp;</DIV>
<DIV><FONT size=2 face=Arial>gal nutuokiat kodel ?</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT>&nbsp;</DIV></BODY></HTML>

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