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SQL: select * into b from a where 1<>1;
2. ˵Ã÷£º¿½±´±í(¿½±´Êý¾Ý£¬Ô´±íÃû£ºa£¬Ä¿±ê±íÃû£ºb)
SQL: insert into b(a, b, c) select d, e, f from b;
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from table a,(
select max(adddate) adddate
from table where table.title=a.title) b ¡¡
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SQL: select a.a, a.b, a.c, b.c, b.d, b.f
from a LEFT OUT JOIN b ON a.a = b.c; ¡¡
5. ˵Ã÷£ºÈճ̰²ÅÅÌáǰÎå·ÖÖÓÌáÐÑ
SQL: select *
from Èճ̰²ÅÅ
where datediff(’’minute’’, f¿ªÊ¼Ê±¼ä, getdate())>5 ¡¡¡¡
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6. ˵Ã÷£ºÁ½ÕŹØÁª±í£¬É¾³ýÖ÷±íÖÐÒѾÔÚ¸±±íÖÐûÓеÄÐÅÏ¢
SQL: delete from info
where not exists(
select *
from infobz
where info.infid=infobz.infid );
7. ˵Ã÷£º——
SQL: SELECT A.NUM, A.NAME, B.UPD_DATE, B.PREV_UPD_DATE
from TABLE1,(SELECT X.NUM, X.UPD_DATE, Y.UPD_DATE PREV_UPD_DATE
from (SELECT NUM, UPD_DATE, INBOUND_QTY, STOCK_ONHAND
 
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select 'e'
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