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tblT ±í½á¹¹
Fyear int 4
Fmonth int 4
FAA int 4
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Fyear Fmonth FAA
2009 12 0
2009 8 0
2010 1 0
2010 2 1
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ÎÒÏë°Ñ СÓÚµÈÓÚ2010-1µÄFAAÊý¾Ý¶¼Í³Ò»ÐÞ¸ÄΪ1
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ÎÒ֮ǰдµÄÊÇ update tblT set FAA='1' where FYear <=2010 and FMonth <=1
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SQL code:
update tblT
set FAA='1'
where datediff(mm,ltrim(fyear)+ltrim(Fmonth)+'01','201001')>=0
SQL code:
update
tblT
set
FAA='1'
where
datediff(mm,ltrim(fyear)+ltrim(Fmonth)+'01','201001'+'01')>=0
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